diff --git a/About_us.java b/About_us.java
new file mode 100644
index 0000000..5564513
--- /dev/null
+++ b/About_us.java
@@ -0,0 +1,67 @@
+package services;
+
+public class About_us {
+	public static void main(String[] args) {
+		System.out.println("\n\tSwayam Multi-Speciality hospital was established in 1990. ");
+	    System.out.println("\tWe have the largest chain in India.");
+	    		
+		System.out.println("\n\n\t\t\t************ MISSION STATEMENT ************");
+		System.out.println("\n\t\tFaithful to our tradition, we provide the highest \n\t\tpossible standard of care and treatment in a");
+		System.out.println("\t\tprofessional and compassionate manner to every");
+	    System.out.println("\t\tperson who avails of our services");
+
+		System.out.println("\n\n\t\t\t************ VISION & VALUES ************");
+		System.out.println("\n\t\tBased on our Mission Statement, our vision and values are:");
+		System.out.println("\n\t\t\t1. To build a first class patient focused service based on high quality and ");
+		System.out.println("\t\t\t   evidence based practice throughout the organisation.");
+		System.out.println("\n\t\t\t2.To provide this service as close to the patient as possible, in a well-managed");
+		System.out.println("\t\t\t  and appropriate environment.");
+		System.out.println("\n\t\t\t3.To promote a culture that will : ");
+		System.out.println("\t\t\t\ta. Ensure high quality care/service is provided."); 
+	    System.out.println("\t\t\t\tb. Ensure that decisions regarding delivery of care/service "
+	    		+ "\n\t\t\t\t   are patient focused and evidence based.");
+	    System.out.println("\t\t\t\tc. Support and invest in education and training, thereby promoting the continuous ");
+	    System.out.println("\t\t\t\t   development  of the workforce in order to maximise the potential of staff at all levels Goals");
+		
+		System.out.println("\n\n\t\t\t************ GOALS ************");
+		System.out.println("\n\t\tContinuously improve all our services through quality management.");
+		System.out.println("\n\t\t\t1. Focus on our patients and deliver high quality service.");
+		System.out.println("\t\t\t2. Involve all our partners in our quality improvement activities.");
+		System.out.println("\t\t\t3. Empower employees to make appropriate decisions.");
+		System.out.println("\t\t\t4. Have the highest degree of respect for one another and value diversity.");
+		System.out.println("\t\t\t5. Use training, teamwork and open communication to enable all employees");
+		System.out.println("\t\t\t   to achieve their full potential.");
+		System.out.println("\t\t\t6. Recognise and reward employees’ contributions.");
+		System.out.println("\t\t\t7. Take all reasonable steps to ensure that patients, visitors, staff and all others in");
+		System.out.println("\t\t\t   contact with the Hospital are afforded the safest possible environment.");
+		System.out.println("\t\t\t8. Maintain the highest ethical standards in protecting the public and the environment.");
+		System.out.println("\t\t\t9. Measure the effectiveness of our activities and monitor progress towards");
+		System.out.println("\t\t\t   achieving our Vision History and Tradition");
+
+		System.out.println("\n\n\t\t\t************ VALUES ************");
+		System.out.println("\n\t\tCOMPASSION:\n\n\t\t\tWe have a deeper level of patient understanding");
+        System.out.println("\t\t\tand are always empathetic to their needs. This encourages a culture");
+        System.out.println("\t\t\tof providing a higher standard of patient-centred care. We respect each");
+        System.out.println("\t\t\tother and our patients, and ensure that their needs are met with dignity.");
+        System.out.println("\t\t\tWe rise to the occasion each time for we recognise the positive social impact we can create.");
+        System.out.println("\n\t\tEXCELLENCE:\n\n\t\t\tWe ask more of ourselves and are always passionate about achieving");
+        System.out.println("\t\t\tthe highest standards of medical expertise and patient care. We understand that being");
+        System.out.println("\t\t\tthe best is a continuous journey of becoming better versions of ourselves every day.");
+        System.out.println("\n\t\tEFFICIENCY:\n\n\t\t\tWe create a responsive healing environment, by being nimble to");
+        System.out.println("\t\t\tthe needs of our patients and delivering what they really need with precision");
+        System.out.println("\t\t\tand timing. We are focused yet fast, personal yet practical, advanced yet seamless ");
+        System.out.println("\t\t\tin delivering the exact care our patients need.");
+        System.out.println("\n\t\tCONSISTENCY:\n\n\t\t\tWe always deliver on our commitment and ensure the highest level of");
+        System.out.println("\t\t\tpatient care is met at every stage, every time. ");
+        System.out.println("\t\t\tWe believe that only through consistency can we achieve ");
+        System.out.println("\t\t\tour patient's trust and fulfil our goals.");
+
+		System.out.println("\n\tCONTACT US : ");
+		System.out.println("\n\t\tEmail: swayam.multispecialityhospital@gmailcom");
+		System.out.println("\n\t\tAddress: Behind Prakash Petrol pump,Kothrud");
+		System.out.println("\n\t\tTel : (020) 3214 - 9087");
+		System.out.println("\n\tEMERGENCY CONTACT DETAILS :");
+		System.out.println("\n\t\tTel : (020) 3456 - 9065");
+
+	}
+}
diff --git a/Appointment_Dept1.java b/Appointment_Dept1.java
new file mode 100644
index 0000000..7aa6120
--- /dev/null
+++ b/Appointment_Dept1.java
@@ -0,0 +1,1291 @@
+package appointment;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.Scanner;
+
+import node.Node;
+import node.Node2;
+import node.Node3;
+
+public class Appointment_Dept1 {
+
+	Scanner input=new Scanner(System.in);
+	InputStreamReader i=new InputStreamReader(System.in);
+	BufferedReader br=new BufferedReader(i);
+
+	public Node2 root1;
+	Node3 front1;
+	Node3 rear1;
+	Node3 front2;
+	Node3 rear2;
+	Node3 front3;
+	Node3 rear3;
+	Node3 front4;
+	Node3 rear4;
+
+	int sr_no1;
+	int sr_no2;
+	int sr_no3;
+	int sr_no4;
+	int max1;
+	int max2;
+	int max3;
+	int max4;
+
+	int count1;
+	int count2;
+	int count3;
+	int count4;
+
+	int o_patient_id1;
+	int n_patient_id1;
+
+	public Appointment_Dept1()
+	{
+		root1=null;
+		front1=null;
+		rear1=null;
+		front2=null;
+		rear2=null;
+		front3=null;
+		rear3=null;
+		front4=null;
+		rear4=null;
+		sr_no1=0;
+		sr_no2=0;
+		sr_no3=0;
+		sr_no4=0;
+		max1=10;
+		max2=10;
+		max3=0;
+		max4=0;
+		count1=0;
+		count2=0;
+		count3=0;
+		count4=0;
+		o_patient_id1=10;
+		n_patient_id1=11;
+
+
+	}
+
+	int q1_full()
+	{
+		if(count1==max1)
+			return 1;
+
+		else
+			return 0;
+	}
+
+	int q1_empty()
+	{
+		if(count1==0)
+			return 1;
+
+		else
+			return 0;
+	}
+
+	int q2_full()
+	{
+		if(count2==max2)
+			return 1;
+
+		else
+			return 0;
+	}
+
+	int q2_empty()
+	{
+		if(count2==0)
+			return 1;
+
+		else
+			return 0;
+	}
+
+	int q3_full()
+	{
+		if(count3==max1)
+			return 1;
+
+		else
+			return 0;
+	}
+
+	int q3_empty()
+	{
+		if(count3==0)
+			return 1;
+
+		else
+			return 0;
+	}
+	int q4_full()
+	{
+		if(count4==max1)
+			return 1;
+
+		else
+			return 0;
+	}
+
+	int q4_empty()
+	{
+		if(count4==0)
+			return 1;
+
+		else
+			return 0;
+	}
+
+
+	public void old_patient_dept1() throws IOException//INSERTION IN BST
+	{
+		Node2 temp;
+		int no=0;
+		do
+		{
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			System.out.print("\nENTER PATIENT NAME : ");
+			String patient_name=br.readLine();
+
+			System.out.print("\nENTER PATIENT AGE : ");
+			int patient_age=input.nextInt();
+
+			while(patient_age<0)
+			{
+				System.out.print("\nPLEASE ENTER VALID AGE : ");
+				patient_age=input.nextInt();
+			}
+			System.out.print("\nENTER PATIENT GENDER : ");
+			String patient_gender=br.readLine();
+
+			System.out.print("\nENTER PATIENT ADDRESS : ");
+			String patient_address=br.readLine();
+
+			System.out.print("\nENTER PATIENT MOBILE NUMBER : ");
+			String patient_ph_no=br.readLine();
+
+			while(patient_ph_no.length()!=10)
+			{
+				System.out.print("\nPLEASE ENTER VALID MOBILE NUMBER : ");
+				patient_ph_no=br.readLine();
+			}
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+
+			Node2 tree_node=new Node2(o_patient_id1,patient_name,patient_age,patient_gender,patient_address,patient_ph_no);
+			if(root1==null)
+				root1=tree_node;
+
+			else
+			{
+				temp=root1;
+				while(temp!=null)
+				{
+					if(temp.patient_id>tree_node.patient_id)
+					{
+						if(temp.left1==null)
+						{
+							temp.left1=tree_node;
+							break;
+						}
+						else
+							temp=temp.left1;
+					}
+					else if(temp.patient_id<tree_node.patient_id)
+					{
+						if(temp.right1==null)
+						{
+							temp.right1=tree_node;
+							break;
+						}
+						else
+							temp=temp.right1;
+					}
+					else if(temp.patient_id==tree_node.patient_id)
+					{
+						System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+						System.out.println("NO DUPLICATIONS ALLOWED !!");
+						System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+						break;
+					}
+				}
+			}
+			o_patient_id1--;
+			System.out.println("\nDo you want to add more records : ");
+			no=input.nextInt();
+		}while(no==1);			
+	}
+
+	public void book_app_dept1() throws IOException
+	{
+		
+		Node2 temp;
+		String slot;
+		System.out.println("\n\t*********** DEPARTMENT - 1 : PEDIATRICIAN *************");
+		System.out.println("\n\t\t1.Doctor - 1 : Dr. NEETA KHONDALLA\n\t\t2.Doctor- 2 : Dr. SAKSHI WANKHEDE");
+		System.out.print("\nENTER YOUR CHOICE : ");
+		int ch1=input.nextInt();
+
+		switch(ch1)
+		{
+
+		case 1://for doctor
+
+			System.out.println("\n\t1.NEW PATIENT \t2.REGULAR PATIENT");
+			System.out.print("\nENTER YOUR CHOICE : ");
+			int ch2=input.nextInt();
+
+			switch(ch2)
+			{
+			case 1://for new patient
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				System.out.print("\nENTER PATIENT NAME : ");
+				String patient_name=br.readLine();
+
+				System.out.print("\nENTER PATIENT AGE : ");
+				int patient_age=input.nextInt();
+
+				while(patient_age<0)
+				{
+					System.out.print("\nPLEASE ENTER VALID AGE : ");
+					patient_age=input.nextInt();
+				}
+				
+				System.out.print("\nENTER PATIENT GENDER : ");
+				String patient_gender=br.readLine();
+
+				System.out.print("\nENTER PATIENT ADDRESS : ");
+				String patient_address=br.readLine();
+
+				System.out.print("\nENTER PATIENT MOBILE NUMBER : ");
+				String patient_ph_no=br.readLine();
+				
+				while(patient_ph_no.length()!=10)
+				{
+					System.out.print("\nPLEASE ENTER VALID MOBLE NUMBER : ");
+					patient_ph_no=br.readLine();
+				}
+
+				System.out.println("\nENTER YOUR SYMPTOMS : ");
+				String sym=br.readLine();
+
+				System.out.println("\nENTER YOUR PREVIOUS PRESCRIPTION : ");
+				String pres=br.readLine();
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				Node2 tree_node1=new Node2(n_patient_id1,patient_name,patient_age,patient_gender,patient_address,patient_ph_no);
+
+				if(root1==null)
+					root1=tree_node1;
+
+				else
+				{
+					temp=root1;
+					while(temp!=null)
+					{
+						if(temp.patient_id>tree_node1.patient_id)
+						{
+							if(temp.left1==null)
+							{
+								temp.left1=tree_node1;
+								break;
+							}
+							else
+								temp=temp.left1;
+						}
+						else if(temp.patient_id<tree_node1.patient_id)
+						{
+							if(temp.right1==null)
+							{
+								temp.right1=tree_node1;
+								break;
+							}
+							else
+								temp=temp.right1;
+						}
+						else if(temp.patient_id==tree_node1.patient_id)
+						{
+							System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+							System.out.println("NO DUPLICATIONS ALLOWED !!");
+							System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+							break;
+						}
+					}
+				}
+				System.out.println("\n\t***** BOOK YOUR SLOT TIME ******");
+				System.out.println("\n\t\t1.9 am to 1 pm\n\t\t2.4 pm to 8 pm");
+				System.out.println("\nENTER YOUR SLOT : ");
+				int ch3=input.nextInt();
+
+				if(ch3==1)
+				{
+					if(q1_full()==1)
+						System.out.println("\nQUEUE FULL !!");
+
+					else
+					{
+						count1++;
+						sr_no1++;
+						slot="9 am to 1 pm";
+						Node3 queue_node1=new Node3(sr_no1,n_patient_id1,patient_name,slot,patient_age,patient_gender,patient_ph_no,sym,pres);
+						if(front1==null)
+						{
+							front1=queue_node1;
+							rear1=queue_node1;
+						}
+
+						else
+						{
+							rear1.next=queue_node1;
+							rear1=rear1.next;
+						}
+					}
+					System.out.println("\n**************************************\n");
+					System.out.println("APPOINTMENT BOOKED SUCCESSFULLY !!");
+					System.out.println("\nPATIENT ID: "+n_patient_id1);
+					System.out.println("\nPATIENT NAME : "+patient_name);
+					System.out.println("\nAPPOINTMENT NO. : "+sr_no1);
+					System.out.println("\nSLOT : 9 am to  1 pm");
+					System.out.println("\n**************************************\n");
+					n_patient_id1++;
+				}
+
+				else if(ch3==2)
+				{
+					if(q2_full()==1)
+						System.out.println("\nQUEUE FULL !!");
+
+					else
+					{
+						count2++;
+						sr_no2++;
+						slot="4 pm to 8 pm";
+						Node3 queue_node2=new Node3(sr_no2,n_patient_id1,patient_name,slot,patient_age,patient_gender,patient_ph_no,sym,pres);
+
+						if(front2==null)
+						{
+							front2=queue_node2;
+							rear2=queue_node2;
+						}
+
+						else
+						{
+							rear2.next=queue_node2;
+							rear2=rear2.next;
+						}
+					}
+					System.out.println("\n**************************************\n");
+					System.out.println("APPOINTMENT BOOKED SUCCESSFULLY !!");
+					System.out.println("\nPATIENT ID: "+n_patient_id1);
+					System.out.println("\nPATIENT NAME : "+patient_name);
+					System.out.println("\nAPPOINTMENT NO. : "+sr_no2);
+					System.out.println("\nSLOT : 4 pm to  8 pm");
+					System.out.println("\n**************************************\n");
+					n_patient_id1++;
+				}
+				else
+					System.out.println("\nINVALID CHOICE !!");
+
+				break;
+
+			case 2://for regular patient
+
+				int flag=0;
+				System.out.print("\nENTER PATIENT ID: ");
+				int id=input.nextInt();
+
+				temp=root1;
+				if(root1==null)
+					System.out.println("\nRECORDS NOT CREATED YET !!");
+
+				else
+				{
+					while(temp!=null)
+					{
+						if(temp.patient_id>id)
+						{
+							temp=temp.left1;
+						}
+						else if(temp.patient_id<id)
+							temp=temp.right1;
+
+						else if(temp.patient_id==id)
+						{
+							flag=1;
+							break;
+						}
+					}
+					if(flag==1)
+					{
+						System.out.println("\nPATIENT RECORD FOUND !!");
+
+						String name=temp.patient_name;
+						int age=temp.patient_age;
+						String gender=temp.patient_gender;
+						String phno=temp.patient_ph_no;
+						int patient_id=temp.patient_id;
+			
+						System.out.print("\nENTER SYMPTOMS : ");
+						String symp=br.readLine();
+
+						System.out.println("\nENTER PREVIUOS PRESCRIPTIONS : ");
+						String pre=br.readLine();
+						System.out.println("\n\t**** BOOK YOUR SLOT TIME  *****");
+
+						System.out.println("\n\t\t1.9 am to  1 pm\n\t\t2.4 pm to 8 pm");
+						System.out.println("\nENTER YOUR SLOT : ");
+						int ch4=input.nextInt();
+
+						if(ch4==1)
+						{
+							count1++;
+							sr_no1++;
+							slot="9 am to 1 pm";
+
+							Node3 queue_node1=new Node3(sr_no1,patient_id,name,slot,age,gender,phno,symp,pre);
+							if(front1==null)
+							{
+								front1=queue_node1;
+								rear1=queue_node1;
+							}
+
+							else
+							{
+								rear1.next=queue_node1;
+								queue_node1.prev=rear1;
+								rear1=rear1.next;
+							}
+							System.out.println("\n*************************************\n");
+							System.out.println("APPOINTMENT BOOKED SUCCESSFULLY !!");
+							System.out.println("\nPATIENT ID : "+patient_id);
+							System.out.println("\nPATIENT NAME : "+name);
+							System.out.println("\nAPPOINTMENT NO. : "+sr_no1);
+							System.out.println("\nSLOT : 9 am to  1 pm");
+							System.out.println("\n*************************************\n");
+						}
+
+						else if(ch4==2)
+						{
+							count2++;
+							sr_no2++;
+							slot="4 pm to 8 pm";
+							Node3 queue_node2=new Node3(sr_no2,patient_id,name,slot,age,gender,phno,symp,pre);
+
+							if(front2==null)
+							{
+								front2=queue_node2;
+								queue_node2.prev=rear2;
+								rear2=queue_node2;
+							}
+
+							else
+							{
+								rear2.next=queue_node2;
+								rear2=rear2.next;
+							}
+							System.out.println("\n*************************************\n");
+							System.out.println("APPOINTMENT BOOKED SUCCESSFULLY !!");
+							System.out.println("\nPATIENT ID : "+patient_id);
+							System.out.println("\nPATIENT NAME : "+name);
+							System.out.println("\nAPPOINTMENT NO. : "+sr_no2);
+							System.out.println("\nSLOT : 4 pm to  8 pm");
+							System.out.println("\n*************************************\n");
+						}
+
+						else
+							System.out.println("\nINVALID CHOICE");
+
+
+					}
+					else
+						System.out.println("\nPATIENT RECORD NOT FOUND !!");
+				}
+
+				break;
+
+			default:
+				System.out.println("\nINVALID CHOICE !!");
+			}
+
+			break;
+
+		case 2://for doct 2
+
+			System.out.println("\n\t1.NEW PATIENT \t2.REGULAR PATIENT");
+			System.out.print("\nENTER YOUR CHOICE : ");
+			int ch3=input.nextInt();
+
+			switch(ch3)
+			{
+			case 1:
+
+				System.out.print("\nENTER PATIENT NAME : ");
+				String patient_name=br.readLine();
+
+				System.out.print("\nENTER PATIENT AGE  : ");
+				int patient_age=input.nextInt();
+				
+				while(patient_age<0)
+				{
+					System.out.print("\nPLEASE ENTER VALID AGE  : ");
+					patient_age=input.nextInt();
+				}
+
+				System.out.print("\nENTER PATIENT GENDER  : ");
+				String patient_gender=br.readLine();
+
+				System.out.print("\nENTER PATIENT ADDRESS  : ");
+				String patient_address=br.readLine();
+
+				System.out.print("\nENTER PATIENT MOBILE NUMBER  : ");
+				String patient_ph_no=br.readLine();
+				
+				while(patient_ph_no.length()!=10)
+				{
+					System.out.print("\nPLEASE ENTER VALID MOBLE NUMBER : ");
+					patient_ph_no=br.readLine();
+				}
+
+				System.out.println("\nENTER YOUR SYMPTOMS : ");
+				String sym=br.readLine();
+
+				System.out.println("\nENTER YOUR PREVIOUS PRESCRIPTION : ");
+				String pres=br.readLine();
+
+				Node2 tree_node2=new Node2(n_patient_id1,patient_name,patient_age,patient_gender,patient_address,patient_ph_no);
+
+				if(root1==null)
+					root1=tree_node2;
+
+				else
+				{
+					temp=root1;
+					while(temp!=null)
+					{
+						if(temp.patient_id>tree_node2.patient_id)
+						{
+							if(temp.left1==null)
+							{
+								temp.left1=tree_node2;
+								break;
+							}
+							else
+								temp=temp.left1;
+						}
+						else if(temp.patient_id<tree_node2.patient_id)
+						{
+							if(temp.right1==null)
+							{
+								temp.right1=tree_node2;
+								break;
+							}
+							else
+								temp=temp.right1;
+						}
+						else if(temp.patient_id==tree_node2.patient_id)
+						{
+							System.out.println("\nNO DUPLICATIONS ALLOWED !!");
+							break;
+						}
+					}
+				}
+
+				System.out.println("\n\t***** BOOK YOUR SLOT TIME ******");
+				System.out.println("\n\t\t1.9 am to 1 pm\n\t\t2.4 pm to 8 pm");
+				System.out.println("\nENTER YOUR SLOT : ");
+				int ch4=input.nextInt();
+
+				if(ch4==1)
+				{
+					if(q3_full()==1)
+						System.out.println("\nQUEUE FULL !!");
+
+					else
+					{
+						count3++;
+						sr_no3++;
+						slot="9 am to 1 pm";
+						Node3 queue_node3=new Node3(sr_no3,n_patient_id1,patient_name,slot,patient_age,patient_gender,patient_ph_no,sym,pres);
+						if(front3==null)
+						{
+							front3=queue_node3;
+							rear3=queue_node3;
+						}
+
+						else
+						{
+							rear3.next=queue_node3;
+							rear3=rear3.next;
+						}
+					}
+					System.out.println("\n**************************************\n");
+					System.out.println("APPOINTMENT BOOKED SUCCESSFULLY !!");
+					System.out.println("\nPATIENT ID:  : "+n_patient_id1);
+					System.out.println("\nPATIENT NAME : "+patient_name);
+					System.out.println("\nAPPOINTMENT NO. : "+sr_no3);
+					System.out.println("\nSLOT : 9 am to 1 pm");
+					System.out.println("\n**************************************\n");
+					n_patient_id1++;
+				}
+
+				else if(ch4==2)
+				{
+					if(q4_full()==1)
+						System.out.println("\nQUEUE FULL !!");
+
+					else
+					{
+						count4++;
+						sr_no4++;
+						slot="4 pm to 8 pm";
+						Node3 queue_node4=new Node3(sr_no4,n_patient_id1,patient_name,slot,patient_age,patient_gender,patient_ph_no,sym,pres);
+
+						if(front4==null)
+						{
+							front4=queue_node4;
+							rear4=queue_node4;
+						}
+
+						else
+						{
+							rear4.next=queue_node4;
+							rear4=rear4.next;
+						}
+					}
+					System.out.println("\n**************************************\n");
+					System.out.println("APPOINTMENT BOOKED SUCCESSFULLY !!");
+					System.out.println("\nPATIENT ID : "+n_patient_id1);
+					System.out.println("\nPATIENT NAME : "+patient_name);
+					System.out.println("\nAPPOINTMENT NO. :  "+sr_no4);
+					System.out.println("\nSLOT : 4 pm to 8 pm");
+					System.out.println("\n**************************************\n");
+					n_patient_id1++;
+				}
+				else
+					System.out.println("\nINVALID CHOICE !!");
+
+				break;
+
+			case 2:
+
+				int flag=0;
+				System.out.print("\nENTER PATIENT ID : ");
+				int id=input.nextInt();
+
+				temp=root1;
+				if(root1==null)
+					System.out.println("\nRECORDS NOT CREATED YET !!");
+
+				else
+				{
+					while(temp!=null)
+					{
+						if(temp.patient_id>id)
+						{
+							temp=temp.left1;
+						}
+						else if(temp.patient_id<id)
+							temp=temp.right1;
+
+						else if(temp.patient_id==id)
+						{
+							flag=1;
+							break;
+						}
+					}
+					if(flag==1)
+					{
+						System.out.println("\nPATIENT RECORD FOUND !!");
+
+						String name=temp.patient_name;
+						int age=temp.patient_age;
+						String gender=temp.patient_gender;
+						String phno=temp.patient_ph_no;
+						int patient_id=temp.patient_id;
+						
+						System.out.print("\nENTER SYMPTOMS : ");
+						String symp=br.readLine();
+
+						System.out.println("\nENTER PREVIUOS PRESCRIPTIONS : ");
+						String pre=br.readLine();
+
+						System.out.println("\n\t**** BOOK YOUR SLOT TIME  *****");
+						System.out.println("\n\t\t1.9 am to  1 pm\n\t\t2.4 pm to 8 pm");
+						System.out.println("\nENTER YOUR SLOT : ");
+						int ch5=input.nextInt();
+
+						if(ch5==1)
+						{
+							count3++;
+							sr_no3++;
+							slot="9 am to 1 pm";
+
+							Node3 queue_node3=new Node3(sr_no3,patient_id,name,slot,age,gender,phno,symp,pre);
+							if(front3==null)
+							{
+								front3=queue_node3;
+								rear3=queue_node3;
+							}
+
+							else
+							{
+								rear3.next=queue_node3;
+								queue_node3.prev=rear3;
+								rear3=rear3.next;
+							}
+							System.out.println("\n*************************************\n");
+							System.out.println("APPOINTMENT BOOKED SUCCESSFULLY !!");
+							System.out.println("\nPATIENT ID  : "+patient_id);
+							System.out.println("\nPATIENT NAME  : "+name);
+							System.out.println("\nAPPOINTMENT NO : "+sr_no3);
+							System.out.println("\nSLOT : 9 am to 1 pm");
+							System.out.println("\n*************************************\n");
+						}
+
+						else if(ch5==2)
+						{
+							count4++;
+							sr_no4++;
+							slot="4 pm to 8 pm";
+							Node3 queue_node4=new Node3(sr_no4,patient_id,name,slot,age,gender,phno,symp,pre);
+
+							if(front4==null)
+							{
+								front4=queue_node4;
+								queue_node4.prev=rear4;
+								rear4=queue_node4;
+							}
+
+							else
+							{
+								rear2.next=queue_node4;
+								rear2=rear2.next;
+							}
+							System.out.println("\n*************************************\n");
+							System.out.println("APPOINTMENT BOOKED SUCCESSFULLY !!");
+							System.out.println("\nPATIENT ID  : "+patient_id);
+							System.out.println("\nPATIENT NAME  : "+name);
+							System.out.println("\nAPPOINTMENT NO. : "+sr_no2);
+							System.out.println("\nSlot: 4 pm to 8 pm");
+							System.out.println("\n*************************************\n");
+						}
+
+						else
+							System.out.println("\nINVALID CHOICE !!");
+
+
+					}
+					else
+						System.out.println("\nPATIENT RECORD NOT FOUND !!");
+				}
+
+				break;
+
+			default:
+				System.out.println("\nINVALID CHOICE !!");
+			}
+
+			break;
+
+		default:
+			System.out.println("\nINVALID CHOICE !!");
+		}
+	}
+
+	public void display_q1()
+	{
+		Node3 temp;
+
+		if(q1_empty()==1)
+			System.out.println("\nNO APPOINTMENT BOOKED YET !!");
+
+		else
+		{
+			temp=front1;
+			while(temp!=null)
+			{
+				System.out.println("\n**********************************\n");
+				System.out.println("APPOINTMENT NO. : "+temp.sr_no);
+				System.out.println("\nPATIENT ID : "+temp.patient_id);
+				System.out.println("\nPATEINT NAME : "+temp.patient_name);
+				System.out.println("\nPATIENT AGE : "+temp.patient_age);
+				System.out.println("\nPATIENT GENDER : "+temp.patient_gender);
+				System.out.println("\nSYMPTOMS : "+temp.symptoms);
+				System.out.println("\nPREVIOUS PRESCRIPTIONS : "+temp.prescription);
+				System.out.println("\n**********************************\n");
+
+				temp=temp.next;
+			}
+		}
+	}
+
+	public void display_q2()
+	{
+		Node3 temp;
+		if(q2_empty()==1)
+			System.out.println("\nNO APPOINTMENT BOOKED YET !!");
+
+		else
+		{
+			temp=front2;
+			while(temp!=null)
+			{
+				System.out.println("\n**********************************\n");
+				System.out.println("APPOINTMENT NO. : "+temp.sr_no);
+				System.out.println("\nPATIENT ID : "+temp.patient_id);
+				System.out.println("\nPATEINT NAME : "+temp.patient_name);
+				System.out.println("\nPATIENT AGE : "+temp.patient_age);
+				System.out.println("\nPATIENT GENDER : "+temp.patient_gender);
+				System.out.println("\nSYMPTOMS : "+temp.symptoms);
+				System.out.println("\nPREVIOUS PRESCRIPTIONS : "+temp.prescription);
+				System.out.println("\n**********************************\n");
+
+				temp=temp.next;
+			}
+		}
+	}
+
+	public void display_q3()
+	{
+		Node3 temp;
+
+		if(q3_empty()==1)
+			System.out.println("\nNO APPOINTMENT BOOKED YET !!");
+
+		else
+		{
+			temp=front3;
+			while(temp!=null)
+			{
+				System.out.println("\n**********************************\n");
+				System.out.println("APPOINTMENT NO. : "+temp.sr_no);
+				System.out.println("\nPATIENT ID : "+temp.patient_id);
+				System.out.println("\nPATEINT NAME : "+temp.patient_name);
+				System.out.println("\nPATIENT AGE : "+temp.patient_age);
+				System.out.println("\nPATIENT GENDER : "+temp.patient_gender);
+				System.out.println("\nSYMPTOMS : "+temp.symptoms);
+				System.out.println("\nPREVIOUS PRESCRIPTIONS : "+temp.prescription);
+				System.out.println("\n**********************************\n");
+
+				temp=temp.next;
+			}
+		}
+	}
+
+	public void display_q4()
+	{
+		Node3 temp;
+
+		if(q4_empty()==1)
+			System.out.println("\nNO APPOINTMENT BOOKED YET !!");
+
+		else
+		{
+			temp=front4;
+			while(temp!=null)
+			{
+				System.out.println("\n**********************************\n");
+				System.out.println("APPOINTMENT NO. : "+temp.sr_no);
+				System.out.println("\nPATIENT ID : "+temp.patient_id);
+				System.out.println("\nPATEINT NAME : "+temp.patient_name);
+				System.out.println("\nPATIENT AGE : "+temp.patient_age);
+				System.out.println("\nPATIENT GENDER : "+temp.patient_gender);
+				System.out.println("\nSYMPTOMS : "+temp.symptoms);
+				System.out.println("\nPREVIOUS PRESCRIPTIONS : "+temp.prescription);
+				System.out.println("\n**********************************\n");
+
+				temp=temp.next;
+			}
+		}
+	}
+
+	public void display_q1q2()
+	{
+		Node3 temp;
+		System.out.println("\n\t ***** Slot 1 ******");
+
+		temp=front1;
+		while(temp!=null)
+		{
+			System.out.println("\n**********************************\n");
+			System.out.println("APPOINTMENT NO. : "+temp.sr_no);
+			System.out.println("\nPATIENT ID : "+temp.patient_id);
+			System.out.println("\nPATEINT NAME : "+temp.patient_name);
+			System.out.println("\nPATIENT AGE : "+temp.patient_age);
+			System.out.println("\nPATIENT GENDER : "+temp.patient_gender);
+			System.out.println("\nSYMPTOMS : "+temp.symptoms);
+			System.out.println("\nPREVIOUS PRESCRIPTIONS : "+temp.prescription);
+			System.out.println("\n**********************************\n");
+
+			temp=temp.next;
+		}
+
+		System.out.println("\n\t****** Slot 2 ******");
+
+		temp=front2;
+		while(temp!=null)
+		{
+			System.out.println("\n**********************************\n");
+			System.out.println("\n\t\tAPPOINTMENT NO. : "+temp.sr_no);
+			System.out.println("\nPATIENT ID : "+temp.patient_id);
+			System.out.println("\nPATEINT NAME : "+temp.patient_name);
+			System.out.println("\nPATIENT AGE : "+temp.patient_age);
+			System.out.println("\nPATIENT GENDER : "+temp.patient_gender);
+			System.out.println("\nSYMPTOMS : "+temp.symptoms);
+			System.out.println("\nPREVIOUS PRESCRIPTIONS : "+temp.prescription);
+			System.out.println("\n**********************************\n");
+
+			temp=temp.next;
+		}
+	}
+	public void display_q3q4()
+	{
+		Node3 temp;
+		System.out.println("\n\t ******* Slot 1 ********");
+
+		temp=front3;
+		while(temp!=null)
+		{
+			System.out.println("\n\t**********************************");
+			System.out.println("\n\t\tAPPOINTMENT NO. : "+temp.sr_no);
+			System.out.println("\t\tPATIENT ID : "+temp.patient_id);
+			System.out.println("\t\tPATEINT NAME : "+temp.patient_name);
+			System.out.println("\t\tPATIENT AGE : "+temp.patient_age);
+			System.out.println("\t\tPATIENT GENDER : "+temp.patient_gender);
+			System.out.println("\t\tSYMPTOMS : "+temp.symptoms);
+			System.out.println("\t\tPREVIOUS PRESCRIPTIONS : "+temp.prescription);
+			System.out.println("\n**********************************\n");
+
+			temp=temp.next;
+		}
+
+		System.out.println("\n\t****** Slot 2 *******");
+
+		temp=front4;
+		while(temp!=null)
+		{
+			System.out.println("\n\t**********************************");
+			System.out.println("\n\t\tAPPOINTMENT NO. : "+temp.sr_no);
+			System.out.println("\t\tPATIENT ID : "+temp.patient_id);
+			System.out.println("\t\tPATEINT NAME : "+temp.patient_name);
+			System.out.println("\t\tPATIENT AGE : "+temp.patient_age);
+			System.out.println("\t\tPATIENT GENDER : "+temp.patient_gender);
+			System.out.println("\t\tSYMPTOMS : "+temp.symptoms);
+			System.out.println("\t\tPREVIOUS PRESCRIPTIONS : "+temp.prescription);
+			System.out.println("\n**********************************\n");
+
+			temp=temp.next;
+		}
+	}
+
+	public void delete_q1()
+	{
+		System.out.print("ENTER PATIENT ID : ");
+		int id=input.nextInt();
+		int flag=0;
+
+		Node3 temp;
+		temp=front1;
+
+		while(temp!=null)
+		{
+			if(temp.patient_id==id)
+			{
+				flag=1;
+				break;
+			}
+			temp=temp.next;
+		}
+
+		if(flag==1)
+		{
+			if(temp.next==null&&temp.prev==null)
+			{
+				temp=null;
+				front1=null;
+				rear1=null;
+			}
+			else if(temp==front1)
+			{
+				front1=front1.next;
+				front1.prev=null;
+				temp.next=null;
+				temp=null;
+			}
+			else if(temp==rear1)
+			{
+				rear1=rear1.prev;
+				rear1.next=null;
+				temp.prev=null;
+				temp=null;
+			}
+			else
+			{
+				temp.prev.next=temp.next;
+				temp.next.prev=temp.prev;
+				
+				temp.prev=null;
+				temp.next=null;
+				temp=null;
+			}
+			count1--;
+			System.out.println("APPOINTMENT DELETED SUCCESSFULLY !!");
+		}
+		else
+			System.out.println("PATIENT RECORD NOT FOUND !!");
+	}
+	public void delete_q2()
+	{
+		System.out.print("ENTER PATIENT ID : ");
+		int id=input.nextInt();
+		int flag=0;
+
+		Node3 temp;
+		temp=front2;
+
+		while(temp!=null)
+		{
+			if(temp.patient_id==id)
+			{
+				flag=1;
+				break;
+			}
+			temp=temp.next;
+		}
+
+		if(flag==1)
+		{
+			if(temp.next==null&&temp.prev==null)
+			{
+				temp=null;
+				front2=null;
+				rear2=null;
+			}
+			else if(temp==front2)
+			{
+				front2=front2.next;
+				front2.prev=null;
+				temp.next=null;
+				temp=null;
+			}
+			else if(temp==rear2)
+			{
+				rear2=rear2.prev;
+				rear2.next=null;
+				temp.prev=null;
+				temp=null;
+			}
+			else
+			{
+				temp.prev.next=temp.next;
+				temp.next.prev=temp.prev;
+				temp=null;
+			}
+			count2--;
+			System.out.println("APPOINTMENT DELETED SUCCESSFULLY !!");
+		}
+	}
+
+	public void delete_q3()
+	{
+		System.out.print("ENTER PATIENT ID : ");
+		int id=input.nextInt();
+		int flag=0;
+
+		Node3 temp;
+		temp=front3;
+
+		while(temp!=null)
+		{
+			if(temp.patient_id==id)
+			{
+				flag=1;
+				break;
+			}
+			temp=temp.next;
+		}
+
+		if(flag==1)
+		{
+			if(temp.next==null&&temp.prev==null)
+			{
+				temp=null;
+				front3=null;
+				rear3=null;
+			}
+			else if(temp==front3)
+			{
+				front3=front3.next;
+				front3.prev=null;
+				temp.next=null;
+				temp=null;
+			}
+			else if(temp==rear3)
+			{
+				rear3=rear3.prev;
+				rear3.next=null;
+				temp.prev=null;
+				temp=null;
+			}
+			else
+			{
+				temp.prev.next=temp.next;
+				temp.next.prev=temp.prev;
+				temp=null;
+			}
+			count3--;
+			System.out.println("APPOINTMENT DELETED SUCCESSFULLY !!");
+		}
+	}
+	public void delete_q4()
+	{
+		System.out.print("ENTER PATIENT ID : ");
+		int id=input.nextInt();
+		int flag=0;
+
+		Node3 temp;
+		temp=front4;
+
+		while(temp!=null)
+		{
+			if(temp.patient_id==id)
+			{
+				flag=1;
+				break;
+			}
+			temp=temp.next;
+		}
+
+		if(flag==1)
+		{
+			if(temp.next==null&&temp.prev==null)
+			{
+				temp=null;
+				front4=null;
+				rear4=null;
+			}
+			else if(temp==front4)
+			{
+				front4=front4.next;
+				front4.prev=null;
+				temp.next=null;
+				temp=null;
+			}
+			else if(temp==rear4)
+			{
+				rear4=rear4.prev;
+				rear4.next=null;
+				temp.prev=null;
+				temp=null;
+			}
+			else
+			{
+				temp.prev.next=temp.next;
+				temp.next.prev=temp.prev;
+				temp=null;
+			}
+			count4--;
+			System.out.println("APPOINTMENT DELETED SUCCESSFULLY !!");
+		}
+	}
+
+	public void display_record(Node2 root) {
+
+		if(root!=null)
+		{
+			display_record(root.left1);
+			System.out.println(root.patient_id+"\t\t"+root.patient_name+"\t\t"+root.patient_age+"\t\t"+root.patient_gender+"\t\t"+root.patient_address+"\t\t"+root.patient_ph_no);			
+			display_record(root.right1);
+		}
+	}
+
+	public void update_tree() throws IOException
+	{
+		Node2 temp;
+
+		int flag=0;
+
+		System.out.print("ENTER PATIENT ID : ");
+		int id=input.nextInt();
+
+		temp=root1;
+		if(root1==null)
+			System.out.println("EMPTY RECORD !!");
+
+		else
+		{
+			while(temp!=null)
+			{
+				if(temp.patient_id>id)
+				{
+					temp=temp.left1;
+				}
+				else if(temp.patient_id<id)
+					temp=temp.right1;
+
+				else if(temp.patient_id==id)
+				{
+					flag=1;
+					break;
+				}
+			}
+			if(flag==0)
+			{
+				System.out.println("PATIENT RECORD NOT FOUND !!");
+			}
+			else
+			{
+				System.out.println("PATIENT RECORD FOUND !!");
+				System.out.println("\n\t****** UPDATE MENU *****");
+				System.out.print("\n\t\t1.PATIENT AGE\n\t\t2.PATIENT ADDRESS\n\t\t3.PATIENT MOBILE NUMBER ");
+				System.out.print("ENTER YOUR CHOICE : ");
+				int ch=input.nextInt();
+
+				switch(ch)
+				{
+				case 1:
+					System.out.print("ENTER PRESENT AGE : ");
+					int n_age=input.nextInt();
+
+					while(n_age<0)
+					{
+						System.out.print("PLEASE ENTER VALID AGE : ");
+						n_age=input.nextInt();
+					}
+					temp.patient_age=n_age;
+					
+					break;
+
+				case 2:
+					System.out.print("ENTER NEW ADDRESS : ");
+					String n_addr=input.next();
+
+					temp.patient_address=n_addr;
+					break;
+
+				case 3:
+					System.out.print("ENTER NEW MOBILE NUMBER : ");
+					String n_no=br.readLine();
+
+					while(n_no.length()!=10)
+					{
+						System.out.print("PLEASE ENTER VALID NUMBER : ");
+						n_no=br.readLine();
+					}
+					
+					temp.patient_ph_no=n_no;
+					break;
+
+				default:
+					System.out.println("INVALID INPUT !!");
+				}
+			}
+		}
+	}
+
+}
+
diff --git a/Appointment_Dept2.java b/Appointment_Dept2.java
new file mode 100644
index 0000000..6909b4b
--- /dev/null
+++ b/Appointment_Dept2.java
@@ -0,0 +1,1278 @@
+package appointment;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.Scanner;
+
+import node.Node2;
+import node.Node3;
+
+public class Appointment_Dept2 {
+
+	Scanner input=new Scanner(System.in);
+	InputStreamReader i=new InputStreamReader(System.in);
+	BufferedReader br=new BufferedReader(i);
+
+	public Node2 root1;
+	Node3 front1;
+	Node3 rear1;
+	Node3 front2;
+	Node3 rear2;
+	Node3 front3;
+	Node3 rear3;
+	Node3 front4;
+	Node3 rear4;
+
+	int sr_no1;
+	int sr_no2;
+	int sr_no3;
+	int sr_no4;
+	int max1;
+	int max2;
+	int max3;
+	int max4;
+
+	int count1;
+	int count2;
+	int count3;
+	int count4;
+
+	int o_patient_id1;
+	int n_patient_id1;
+
+	public Appointment_Dept2()
+	{
+		root1=null;
+		front1=null;
+		rear1=null;
+		front2=null;
+		rear2=null;
+		front3=null;
+		rear3=null;
+		front4=null;
+		rear4=null;
+		sr_no1=0;
+		sr_no2=0;
+		sr_no3=0;
+		sr_no4=0;
+		max1=10;
+		max2=10;
+		max3=0;
+		max4=0;
+		count1=0;
+		count2=0;
+		count3=0;
+		count4=0;
+		o_patient_id1=10;
+		n_patient_id1=11;
+
+
+	}
+
+	int q1_full()
+	{
+		if(count1==max1)
+			return 1;
+
+		else
+			return 0;
+	}
+
+	int q1_empty()
+	{
+		if(count1==0)
+			return 1;
+
+		else
+			return 0;
+	}
+
+	int q2_full()
+	{
+		if(count2==max2)
+			return 1;
+
+		else
+			return 0;
+	}
+
+	int q2_empty()
+	{
+		if(count2==0)
+			return 1;
+
+		else
+			return 0;
+	}
+
+	int q3_full()
+	{
+		if(count3==max1)
+			return 1;
+
+		else
+			return 0;
+	}
+
+	int q3_empty()
+	{
+		if(count3==0)
+			return 1;
+
+		else
+			return 0;
+	}
+	int q4_full()
+	{
+		if(count4==max1)
+			return 1;
+
+		else
+			return 0;
+	}
+
+	int q4_empty()
+	{
+		if(count4==0)
+			return 1;
+
+		else
+			return 0;
+	}
+
+
+	public void old_patient_dept1() throws IOException//INSERTION IN BST
+	{
+		Node2 temp;
+		int no=0;
+		do
+		{
+			System.out.print("Enter patient name: ");
+			String patient_name=br.readLine();
+
+			System.out.print("Enter patient age: ");
+			int patient_age=input.nextInt();
+
+			while(patient_age<0)
+			{
+				System.out.print("Please enter a valid age: ");
+				patient_age=input.nextInt();
+			}
+			System.out.print("Enter patient gender: ");
+			String patient_gender=br.readLine();
+
+			System.out.print("Enter patient address: ");
+			String patient_address=br.readLine();
+
+			System.out.print("Enter patient phone no: ");
+			String patient_ph_no=br.readLine();
+
+			while(patient_ph_no.length()!=10)
+			{
+				System.out.print("Please enter a 10 digit Phone no: ");
+				patient_ph_no=br.readLine();
+			}
+
+			Node2 tree_node=new Node2(o_patient_id1,patient_name,patient_age,patient_gender,patient_address,patient_ph_no);
+			if(root1==null)
+				root1=tree_node;
+
+			else
+			{
+				temp=root1;
+				while(temp!=null)
+				{
+					if(temp.patient_id>tree_node.patient_id)
+					{
+						if(temp.left1==null)
+						{
+							temp.left1=tree_node;
+							break;
+						}
+						else
+							temp=temp.left1;
+					}
+					else if(temp.patient_id<tree_node.patient_id)
+					{
+						if(temp.right1==null)
+						{
+							temp.right1=tree_node;
+							break;
+						}
+						else
+							temp=temp.right1;
+					}
+					else if(temp.patient_id==tree_node.patient_id)
+					{
+						System.out.println("No Duplicates Allowed!!");
+						break;
+					}
+				}
+			}
+			o_patient_id1--;
+			System.out.println("Do you want to add more records: ");
+			no=input.nextInt();
+		}while(no==1);			
+	}
+
+	public void book_app_dept1() throws IOException
+	{
+		Node2 temp;
+		String slot;
+		System.out.println("\n\t*********** DEPARTMENT - 2 : DERMATOLOGIST *************");
+		System.out.println("\n\t\t1.Doctor - 1 : Dr. SAMIKSHA JADHAV\n\t\t2.Doctor- 2 : Dr. MANOHAR KHAIRNA");
+		System.out.print("Enter your Doctor: ");
+		int ch1=input.nextInt();
+
+		switch(ch1)
+		{
+
+		case 1://for doctor
+
+			System.out.println("1.New Patient\t2.Regular Patient");
+			System.out.print("Enter your choice: ");
+			int ch2=input.nextInt();
+
+			switch(ch2)
+			{
+			case 1://for new patient
+
+				System.out.print("Enter patient name: ");
+				String patient_name=br.readLine();
+
+				System.out.print("Enter patient age: ");
+				int patient_age=input.nextInt();
+
+				while(patient_age<0)
+				{
+					System.out.print("Please enter a valid age: ");
+					patient_age=input.nextInt();
+				}
+				
+				System.out.print("Enter patient gender: ");
+				String patient_gender=br.readLine();
+
+				System.out.print("Enter patient address: ");
+				String patient_address=br.readLine();
+
+				System.out.print("Enter patient phone no: ");
+				String patient_ph_no=br.readLine();
+				
+				while(patient_ph_no.length()!=10)
+				{
+					System.out.print("Please enter a 10 digit Phone no: ");
+					patient_ph_no=br.readLine();
+				}
+
+				System.out.println("Enter your symptoms: ");
+				String sym=br.readLine();
+
+				System.out.println("Enter your previous prescription: ");
+				String pres=br.readLine();
+
+				Node2 tree_node1=new Node2(n_patient_id1,patient_name,patient_age,patient_gender,patient_address,patient_ph_no);
+
+				if(root1==null)
+					root1=tree_node1;
+
+				else
+				{
+					temp=root1;
+					while(temp!=null)
+					{
+						if(temp.patient_id>tree_node1.patient_id)
+						{
+							if(temp.left1==null)
+							{
+								temp.left1=tree_node1;
+								break;
+							}
+							else
+								temp=temp.left1;
+						}
+						else if(temp.patient_id<tree_node1.patient_id)
+						{
+							if(temp.right1==null)
+							{
+								temp.right1=tree_node1;
+								break;
+							}
+							else
+								temp=temp.right1;
+						}
+						else if(temp.patient_id==tree_node1.patient_id)
+						{
+							System.out.println("No Duplicates Allowed!!");
+							break;
+						}
+					}
+				}
+
+				System.out.println("1.9 am to 1 pm\t2.4 pm to 8 pm");
+				System.out.println("Enter your slot: ");
+				int ch3=input.nextInt();
+
+				if(ch3==1)
+				{
+					if(q1_full()==1)
+						System.out.println("Queue Full!!");
+
+					else
+					{
+						count1++;
+						sr_no1++;
+						slot="9 am to 1 pm";
+						Node3 queue_node1=new Node3(sr_no1,n_patient_id1,patient_name,slot,patient_age,patient_gender,patient_ph_no,sym,pres);
+						if(front1==null)
+						{
+							front1=queue_node1;
+							rear1=queue_node1;
+						}
+
+						else
+						{
+							rear1.next=queue_node1;
+							rear1=rear1.next;
+						}
+					}
+					System.out.println("**************************************");
+					System.out.println("Appointment Booked Successfully!!");
+					System.out.println("Patient ID: "+n_patient_id1);
+					System.out.println("Patient Name: "+patient_name);
+					System.out.println("Appointment No: "+sr_no1);
+					System.out.println("Slot: 9 am to 1 pm");
+					System.out.println("**************************************");
+					n_patient_id1++;
+				}
+
+				else if(ch3==2)
+				{
+					if(q2_full()==1)
+						System.out.println("Queue Full!!");
+
+					else
+					{
+						count2++;
+						sr_no2++;
+						slot="4 pm to 8 pm";
+						Node3 queue_node2=new Node3(sr_no2,n_patient_id1,patient_name,slot,patient_age,patient_gender,patient_ph_no,sym,pres);
+
+						if(front2==null)
+						{
+							front2=queue_node2;
+							rear2=queue_node2;
+						}
+
+						else
+						{
+							rear2.next=queue_node2;
+							rear2=rear2.next;
+						}
+					}
+					System.out.println("**************************************");
+					System.out.println("Appointment Booked Successfully!!");
+					System.out.println("Patient ID: "+n_patient_id1);
+					System.out.println("Patient Name: "+patient_name);
+					System.out.println("Appointment No: "+sr_no2);
+					System.out.println("Slot: 4 pm to 8 pm");
+					System.out.println("**************************************");
+					n_patient_id1++;
+				}
+				else
+					System.out.println("Invalid Choice");
+
+				break;
+
+			case 2://for regular patient
+
+				int flag=0;
+				System.out.print("Enter Patient ID: ");
+				int id=input.nextInt();
+
+				temp=root1;
+				if(root1==null)
+					System.out.println("Tree Not Created!!");
+
+				else
+				{
+					while(temp!=null)
+					{
+						if(temp.patient_id>id)
+						{
+							temp=temp.left1;
+						}
+						else if(temp.patient_id<id)
+							temp=temp.right1;
+
+						else if(temp.patient_id==id)
+						{
+							flag=1;
+							break;
+						}
+					}
+					if(flag==1)
+					{
+						System.out.println("Patient Record Found!!");
+
+						String name=temp.patient_name;
+						int age=temp.patient_age;
+						String gender=temp.patient_gender;
+						String phno=temp.patient_ph_no;
+						int patient_id=temp.patient_id;
+			
+						System.out.print("Enter Symptoms: ");
+						String symp=br.readLine();
+
+						System.out.println("Enter previous prescription: ");
+						String pre=br.readLine();
+
+						System.out.println("1.9 am to 1 pm\t2.4 pm to 8 pm");
+						System.out.println("Enter your slot: ");
+						int ch4=input.nextInt();
+
+						if(ch4==1)
+						{
+							count1++;
+							sr_no1++;
+							slot="9 am to 1 pm";
+
+							Node3 queue_node1=new Node3(sr_no1,patient_id,name,slot,age,gender,phno,symp,pre);
+							if(front1==null)
+							{
+								front1=queue_node1;
+								rear1=queue_node1;
+							}
+
+							else
+							{
+								rear1.next=queue_node1;
+								queue_node1.prev=rear1;
+								rear1=rear1.next;
+							}
+							System.out.println("*************************************");
+							System.out.println("Appointment Booked Successfully!!");
+							System.out.println("Patient ID: "+patient_id);
+							System.out.println("Patient Name: "+name);
+							System.out.println("Appointment No: "+sr_no1);
+							System.out.println("Slot: 9 am to 1 pm");
+							System.out.println("*************************************");
+						}
+
+						else if(ch4==2)
+						{
+							count2++;
+							sr_no2++;
+							slot="4 pm to 8 pm";
+							Node3 queue_node2=new Node3(sr_no2,patient_id,name,slot,age,gender,phno,symp,pre);
+
+							if(front2==null)
+							{
+								front2=queue_node2;
+								queue_node2.prev=rear2;
+								rear2=queue_node2;
+							}
+
+							else
+							{
+								rear2.next=queue_node2;
+								rear2=rear2.next;
+							}
+							System.out.println("*************************************");
+							System.out.println("Appointment Booked Successfully!!");
+							System.out.println("Patient ID: "+patient_id);
+							System.out.println("Patient Name: "+name);
+							System.out.println("Appointment No: "+sr_no2);
+							System.out.println("Slot: 4 pm to 8 pm");
+							System.out.println("*************************************");
+						}
+
+						else
+							System.out.println("Invalid Choice");
+
+
+					}
+					else
+						System.out.println("Patient Record Not Found!!");
+				}
+
+				break;
+
+			default:
+				System.out.println("Invalid Choice!!");
+			}
+
+			break;
+
+		case 2://for doct 2
+
+			System.out.println("1.New Patient\t2.Regular Patient");
+			System.out.print("Enter your choice: ");
+			int ch3=input.nextInt();
+
+			switch(ch3)
+			{
+			case 1:
+
+				System.out.print("Enter patient name: ");
+				String patient_name=br.readLine();
+
+				System.out.print("Enter patient age: ");
+				int patient_age=input.nextInt();
+				
+				while(patient_age<0)
+				{
+					System.out.print("Please enter a valid age: ");
+					patient_age=input.nextInt();
+				}
+
+				System.out.print("Enter patient gender: ");
+				String patient_gender=br.readLine();
+
+				System.out.print("Enter patient address: ");
+				String patient_address=br.readLine();
+
+				System.out.print("Enter patient phone no: ");
+				String patient_ph_no=br.readLine();
+				
+				while(patient_ph_no.length()!=10)
+				{
+					System.out.print("Please enter a 10 digit Phone no: ");
+					patient_ph_no=br.readLine();
+				}
+
+				System.out.println("Enter your symptoms: ");
+				String sym=br.readLine();
+
+				System.out.println("Enter your previous prescription: ");
+				String pres=br.readLine();
+
+				Node2 tree_node2=new Node2(n_patient_id1,patient_name,patient_age,patient_gender,patient_address,patient_ph_no);
+
+				if(root1==null)
+					root1=tree_node2;
+
+				else
+				{
+					temp=root1;
+					while(temp!=null)
+					{
+						if(temp.patient_id>tree_node2.patient_id)
+						{
+							if(temp.left1==null)
+							{
+								temp.left1=tree_node2;
+								break;
+							}
+							else
+								temp=temp.left1;
+						}
+						else if(temp.patient_id<tree_node2.patient_id)
+						{
+							if(temp.right1==null)
+							{
+								temp.right1=tree_node2;
+								break;
+							}
+							else
+								temp=temp.right1;
+						}
+						else if(temp.patient_id==tree_node2.patient_id)
+						{
+							System.out.println("No Duplicates Allowed!!");
+							break;
+						}
+					}
+				}
+
+				System.out.println("1.9 am to 1 pm\t2.4 pm to 8 pm");
+				System.out.println("Enter your slot: ");
+				int ch4=input.nextInt();
+
+				if(ch4==1)
+				{
+					if(q3_full()==1)
+						System.out.println("Queue Full!!");
+
+					else
+					{
+						count3++;
+						sr_no3++;
+						slot="9 am to 1 pm";
+						Node3 queue_node3=new Node3(sr_no3,n_patient_id1,patient_name,slot,patient_age,patient_gender,patient_ph_no,sym,pres);
+						if(front3==null)
+						{
+							front3=queue_node3;
+							rear3=queue_node3;
+						}
+
+						else
+						{
+							rear3.next=queue_node3;
+							rear3=rear3.next;
+						}
+					}
+					System.out.println("**************************************");
+					System.out.println("Appointment Booked Successfully!!");
+					System.out.println("Patient ID: "+n_patient_id1);
+					System.out.println("Patient Name: "+patient_name);
+					System.out.println("Appointment No: "+sr_no3);
+					System.out.println("Slot: 9 am to 1 pm");
+					System.out.println("**************************************");
+					n_patient_id1++;
+				}
+
+				else if(ch4==2)
+				{
+					if(q4_full()==1)
+						System.out.println("Queue Full!!");
+
+					else
+					{
+						count4++;
+						sr_no4++;
+						slot="4 pm to 8 pm";
+						Node3 queue_node4=new Node3(sr_no4,n_patient_id1,patient_name,slot,patient_age,patient_gender,patient_ph_no,sym,pres);
+
+						if(front4==null)
+						{
+							front4=queue_node4;
+							rear4=queue_node4;
+						}
+
+						else
+						{
+							rear4.next=queue_node4;
+							rear4=rear4.next;
+						}
+					}
+					System.out.println("**************************************");
+					System.out.println("Appointment Booked Successfully!!");
+					System.out.println("Patient ID: "+n_patient_id1);
+					System.out.println("Patient Name: "+patient_name);
+					System.out.println("Appointment No: "+sr_no4);
+					System.out.println("Slot: 4 pm to 8 pm");
+					System.out.println("**************************************");
+					n_patient_id1++;
+				}
+				else
+					System.out.println("Invalid Choice");
+
+				break;
+
+			case 2:
+
+				int flag=0;
+				System.out.print("Enter Patient ID: ");
+				int id=input.nextInt();
+
+				temp=root1;
+				if(root1==null)
+					System.out.println("Tree Not Created!!");
+
+				else
+				{
+					while(temp!=null)
+					{
+						if(temp.patient_id>id)
+						{
+							temp=temp.left1;
+						}
+						else if(temp.patient_id<id)
+							temp=temp.right1;
+
+						else if(temp.patient_id==id)
+						{
+							flag=1;
+							break;
+						}
+					}
+					if(flag==1)
+					{
+						System.out.println("Patient Record Found!!");
+
+						String name=temp.patient_name;
+						int age=temp.patient_age;
+						String gender=temp.patient_gender;
+						String phno=temp.patient_ph_no;
+						int patient_id=temp.patient_id;
+						
+						System.out.print("Enter Symptoms: ");
+						String symp=br.readLine();
+
+						System.out.println("Enter previous prescription: ");
+						String pre=br.readLine();
+
+						System.out.println("1.9 am to 1 pm\t2.4 pm to 8 pm");
+						System.out.println("Enter your slot: ");
+						int ch5=input.nextInt();
+
+						if(ch5==1)
+						{
+							count3++;
+							sr_no3++;
+							slot="9 am to 1 pm";
+
+							Node3 queue_node3=new Node3(sr_no3,patient_id,name,slot,age,gender,phno,symp,pre);
+							if(front3==null)
+							{
+								front3=queue_node3;
+								rear3=queue_node3;
+							}
+
+							else
+							{
+								rear3.next=queue_node3;
+								queue_node3.prev=rear3;
+								rear3=rear3.next;
+							}
+							System.out.println("*************************************");
+							System.out.println("Appointment Booked Successfully!!");
+							System.out.println("Patient ID: "+patient_id);
+							System.out.println("Patient Name: "+name);
+							System.out.println("Appointment No: "+sr_no3);
+							System.out.println("Slot: 9 am to 1 pm");
+							System.out.println("*************************************");
+						}
+
+						else if(ch5==2)
+						{
+							count4++;
+							sr_no4++;
+							slot="4 pm to 8 pm";
+							Node3 queue_node4=new Node3(sr_no4,patient_id,name,slot,age,gender,phno,symp,pre);
+
+							if(front4==null)
+							{
+								front4=queue_node4;
+								queue_node4.prev=rear4;
+								rear4=queue_node4;
+							}
+
+							else
+							{
+								rear2.next=queue_node4;
+								rear2=rear2.next;
+							}
+							System.out.println("*************************************");
+							System.out.println("Appointment Booked Successfully!!");
+							System.out.println("Patient ID: "+patient_id);
+							System.out.println("Patient Name: "+name);
+							System.out.println("Appointment No: "+sr_no2);
+							System.out.println("Slot: 4 pm to 8 pm");
+							System.out.println("*************************************");
+						}
+
+						else
+							System.out.println("Invalid Choice");
+
+
+					}
+					else
+						System.out.println("Patient Record Not Found!!");
+				}
+
+				break;
+
+			default:
+				System.out.println("Invalid Choice!!");
+			}
+
+			break;
+
+		default:
+			System.out.println("Invalid Choice!!");
+		}
+	}
+
+	public void display_q1()
+	{
+		Node3 temp;
+
+		if(q1_empty()==1)
+			System.out.println("No Appointments Booked Yet!!");
+
+		else
+		{
+			temp=front1;
+			while(temp!=null)
+			{
+				System.out.println("**********************************");
+				System.out.println("Appointment No: "+temp.sr_no);
+				System.out.println("Patient ID: "+temp.patient_id);
+				System.out.println("Patient Name: "+temp.patient_name);
+				System.out.println("Patient Age: "+temp.patient_age);
+				System.out.println("Patient Gender: "+temp.patient_gender);
+				System.out.println("Symptoms: "+temp.symptoms);
+				System.out.println("Previous Prescription: "+temp.prescription);
+				System.out.println("**********************************");
+
+				temp=temp.next;
+			}
+		}
+	}
+
+	public void display_q2()
+	{
+		Node3 temp;
+		if(q2_empty()==1)
+			System.out.println("No Appointments Booked Yet!!");
+
+		else
+		{
+			temp=front2;
+			while(temp!=null)
+			{
+				System.out.println("**********************************");
+				System.out.println("Appointment No: "+temp.sr_no);
+				System.out.println("Patient ID: "+temp.patient_id);
+				System.out.println("Patient Name: "+temp.patient_name);
+				System.out.println("Patient Age: "+temp.patient_age);
+				System.out.println("Patient Gender: "+temp.patient_gender);
+				System.out.println("Symptoms: "+temp.symptoms);
+				System.out.println("Previous Prescription: "+temp.prescription);
+				System.out.println("**********************************");
+
+				temp=temp.next;
+			}
+		}
+	}
+
+	public void display_q3()
+	{
+		Node3 temp;
+
+		if(q3_empty()==1)
+			System.out.println("No Appointments Booked Yet!!");
+
+		else
+		{
+			temp=front3;
+			while(temp!=null)
+			{
+				System.out.println("**********************************");
+				System.out.println("Appointment No: "+temp.sr_no);
+				System.out.println("Patient ID: "+temp.patient_id);
+				System.out.println("Patient Name: "+temp.patient_name);
+				System.out.println("Patient Age: "+temp.patient_age);
+				System.out.println("Patient Gender: "+temp.patient_gender);
+				System.out.println("Symptoms: "+temp.symptoms);
+				System.out.println("Previous Prescription: "+temp.prescription);
+				System.out.println("**********************************");
+
+				temp=temp.next;
+			}
+		}
+	}
+
+	public void display_q4()
+	{
+		Node3 temp;
+
+		if(q4_empty()==1)
+			System.out.println("No Appointments Booked Yet!!");
+
+		else
+		{
+			temp=front4;
+			while(temp!=null)
+			{
+				System.out.println("**********************************");
+				System.out.println("Appointment No: "+temp.sr_no);
+				System.out.println("Patient ID: "+temp.patient_id);
+				System.out.println("Patient Name: "+temp.patient_name);
+				System.out.println("Patient Age: "+temp.patient_age);
+				System.out.println("Patient Gender: "+temp.patient_gender);
+				System.out.println("Symptoms: "+temp.symptoms);
+				System.out.println("Previous Prescription: "+temp.prescription);
+				System.out.println("**********************************");
+
+				temp=temp.next;
+			}
+		}
+	}
+
+	public void display_q1q2()
+	{
+		Node3 temp;
+		System.out.println("------Slot 1------");
+
+		temp=front1;
+		while(temp!=null)
+		{
+			System.out.println("**********************************");
+			System.out.println("Appointment No: "+temp.sr_no);
+			System.out.println("Patient ID: "+temp.patient_id);
+			System.out.println("Patient Name: "+temp.patient_name);
+			System.out.println("Patient Age: "+temp.patient_age);
+			System.out.println("Patient Gender: "+temp.patient_gender);
+			System.out.println("Symptoms: "+temp.symptoms);
+			System.out.println("Previous Prescription: "+temp.prescription);
+			System.out.println("**********************************");
+
+			temp=temp.next;
+		}
+
+		System.out.println("------Slot 2------");
+
+		temp=front2;
+		while(temp!=null)
+		{
+			System.out.println("**********************************");
+			System.out.println("Appointment No: "+temp.sr_no);
+			System.out.println("Patient ID: "+temp.patient_id);
+			System.out.println("Patient Name: "+temp.patient_name);
+			System.out.println("Patient Age: "+temp.patient_age);
+			System.out.println("Patient Gender: "+temp.patient_gender);
+			System.out.println("Symptoms: "+temp.symptoms);
+			System.out.println("Previous Prescription: "+temp.prescription);
+			System.out.println("**********************************");
+
+			temp=temp.next;
+		}
+	}
+	public void display_q3q4()
+	{
+		Node3 temp;
+		System.out.println("------Slot 1------");
+
+		temp=front3;
+		while(temp!=null)
+		{
+			System.out.println("**********************************");
+			System.out.println("Appointment No: "+temp.sr_no);
+			System.out.println("Patient ID: "+temp.patient_id);
+			System.out.println("Patient Name: "+temp.patient_name);
+			System.out.println("Patient Age: "+temp.patient_age);
+			System.out.println("Patient Gender: "+temp.patient_gender);
+			System.out.println("Symptoms: "+temp.symptoms);
+			System.out.println("Previous Prescription: "+temp.prescription);
+			System.out.println("**********************************");
+
+			temp=temp.next;
+		}
+
+		System.out.println("------Slot 2------");
+
+		temp=front4;
+		while(temp!=null)
+		{
+			System.out.println("**********************************");
+			System.out.println("Appointment No: "+temp.sr_no);
+			System.out.println("Patient ID: "+temp.patient_id);
+			System.out.println("Patient Name: "+temp.patient_name);
+			System.out.println("Patient Age: "+temp.patient_age);
+			System.out.println("Patient Gender: "+temp.patient_gender);
+			System.out.println("Symptoms: "+temp.symptoms);
+			System.out.println("Previous Prescription: "+temp.prescription);
+			System.out.println("**********************************");
+
+			temp=temp.next;
+		}
+	}
+
+	public void delete_q1()
+	{
+		System.out.print("Enter your patient id: ");
+		int id=input.nextInt();
+		int flag=0;
+
+		Node3 temp;
+		temp=front1;
+
+		while(temp!=null)
+		{
+			if(temp.patient_id==id)
+			{
+				flag=1;
+				break;
+			}
+			temp=temp.next;
+		}
+
+		if(flag==1)
+		{
+			if(temp.next==null&&temp.prev==null)
+			{
+				temp=null;
+				front1=null;
+				rear1=null;
+			}
+			else if(temp==front1)
+			{
+				front1=front1.next;
+				front1.prev=null;
+				temp.next=null;
+				temp=null;
+			}
+			else if(temp==rear1)
+			{
+				rear1=rear1.prev;
+				rear1.next=null;
+				temp.prev=null;
+				temp=null;
+			}
+			else
+			{
+				temp.prev.next=temp.next;
+				temp.next.prev=temp.prev;
+				
+				temp.prev=null;
+				temp.next=null;
+				temp=null;
+			}
+			count1--;
+			System.out.println("Appointment Deleted Successfully!!");
+		}
+		else
+			System.out.println("Patient record not Found!!");
+	}
+	public void delete_q2()
+	{
+		System.out.print("Enter your patient id: ");
+		int id=input.nextInt();
+		int flag=0;
+
+		Node3 temp;
+		temp=front2;
+
+		while(temp!=null)
+		{
+			if(temp.patient_id==id)
+			{
+				flag=1;
+				break;
+			}
+			temp=temp.next;
+		}
+
+		if(flag==1)
+		{
+			if(temp.next==null&&temp.prev==null)
+			{
+				temp=null;
+				front2=null;
+				rear2=null;
+			}
+			else if(temp==front2)
+			{
+				front2=front2.next;
+				front2.prev=null;
+				temp.next=null;
+				temp=null;
+			}
+			else if(temp==rear2)
+			{
+				rear2=rear2.prev;
+				rear2.next=null;
+				temp.prev=null;
+				temp=null;
+			}
+			else
+			{
+				temp.prev.next=temp.next;
+				temp.next.prev=temp.prev;
+				temp=null;
+			}
+			count2--;
+			System.out.println("Appointment Deleted Successfully!!");
+		}
+	}
+
+	public void delete_q3()
+	{
+		System.out.print("Enter your patient id: ");
+		int id=input.nextInt();
+		int flag=0;
+
+		Node3 temp;
+		temp=front3;
+
+		while(temp!=null)
+		{
+			if(temp.patient_id==id)
+			{
+				flag=1;
+				break;
+			}
+			temp=temp.next;
+		}
+
+		if(flag==1)
+		{
+			if(temp.next==null&&temp.prev==null)
+			{
+				temp=null;
+				front3=null;
+				rear3=null;
+			}
+			else if(temp==front3)
+			{
+				front3=front3.next;
+				front3.prev=null;
+				temp.next=null;
+				temp=null;
+			}
+			else if(temp==rear3)
+			{
+				rear3=rear3.prev;
+				rear3.next=null;
+				temp.prev=null;
+				temp=null;
+			}
+			else
+			{
+				temp.prev.next=temp.next;
+				temp.next.prev=temp.prev;
+				temp=null;
+			}
+			count3--;
+			System.out.println("Appointment Deleted Successfully!!");
+		}
+	}
+	public void delete_q4()
+	{
+		System.out.print("Enter your patient id: ");
+		int id=input.nextInt();
+		int flag=0;
+
+		Node3 temp;
+		temp=front4;
+
+		while(temp!=null)
+		{
+			if(temp.patient_id==id)
+			{
+				flag=1;
+				break;
+			}
+			temp=temp.next;
+		}
+
+		if(flag==1)
+		{
+			if(temp.next==null&&temp.prev==null)
+			{
+				temp=null;
+				front4=null;
+				rear4=null;
+			}
+			else if(temp==front4)
+			{
+				front4=front4.next;
+				front4.prev=null;
+				temp.next=null;
+				temp=null;
+			}
+			else if(temp==rear4)
+			{
+				rear4=rear4.prev;
+				rear4.next=null;
+				temp.prev=null;
+				temp=null;
+			}
+			else
+			{
+				temp.prev.next=temp.next;
+				temp.next.prev=temp.prev;
+				temp=null;
+			}
+			count4--;
+			System.out.println("Appointment Deleted Successfully!!");
+		}
+	}
+
+	public void display_record(Node2 root) {
+
+		if(root!=null)
+		{
+			display_record(root.left1);
+			System.out.println(root.patient_id+"\t\t"+root.patient_name+"\t\t"+root.patient_age+"\t\t"+root.patient_gender+"\t\t"+root.patient_address+"\t\t"+root.patient_ph_no);			
+			display_record(root.right1);
+		}
+	}
+
+	public void update_tree() throws IOException
+	{
+		Node2 temp;
+
+		int flag=0;
+
+		System.out.print("Enter Patient ID: ");
+		int id=input.nextInt();
+
+		temp=root1;
+		if(root1==null)
+			System.out.println("Tree Not Created!!");
+
+		else
+		{
+			while(temp!=null)
+			{
+				if(temp.patient_id>id)
+				{
+					temp=temp.left1;
+				}
+				else if(temp.patient_id<id)
+					temp=temp.right1;
+
+				else if(temp.patient_id==id)
+				{
+					flag=1;
+					break;
+				}
+			}
+			if(flag==0)
+			{
+				System.out.println("Patient Record Not Found!!");
+			}
+			else
+			{
+				System.out.println("Patient Record Found!!");
+				System.out.print("1.Patient Age\t2.Patient Address\t3.Patient Mobile No");
+				System.out.print("Enter your choice: ");
+				int ch=input.nextInt();
+
+				switch(ch)
+				{
+				case 1:
+					System.out.print("Enter new age: ");
+					int n_age=input.nextInt();
+
+					while(n_age<0)
+					{
+						System.out.print("Please enter a valid age: ");
+						n_age=input.nextInt();
+					}
+					temp.patient_age=n_age;
+					
+					break;
+
+				case 2:
+					System.out.print("Enter new address: ");
+					String n_addr=input.next();
+
+					temp.patient_address=n_addr;
+					break;
+
+				case 3:
+					System.out.print("Enter new Mobile no: ");
+					String n_no=br.readLine();
+
+					while(n_no.length()!=10)
+					{
+						System.out.print("Please enter a 10 digit Mobile No: ");
+						n_no=br.readLine();
+					}
+					
+					temp.patient_ph_no=n_no;
+					break;
+
+				default:
+					System.out.println("Invalid Choice!");
+				}
+			}
+		}
+	}
+
+}
diff --git a/Appointment_Dept3.java b/Appointment_Dept3.java
new file mode 100644
index 0000000..6c2c1dd
--- /dev/null
+++ b/Appointment_Dept3.java
@@ -0,0 +1,743 @@
+package appointment;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.Scanner;
+
+import node.Node2;
+import node.Node3;
+
+public class Appointment_Dept3 {
+
+	Scanner input=new Scanner(System.in);
+	InputStreamReader i=new InputStreamReader(System.in);
+	BufferedReader br=new BufferedReader(i);
+
+	public Node2 root1;
+	Node3 front1;
+	Node3 rear1;
+	Node3 front2;
+	Node3 rear2;
+
+
+	int sr_no1;
+	int sr_no2;
+
+	int max1;
+	int max2;
+
+	int count1;
+	int count2;
+
+	int o_patient_id1;
+	int n_patient_id1;
+
+	public Appointment_Dept3()
+	{
+		root1=null;
+		front1=null;
+		rear1=null;
+		front2=null;
+		rear2=null;
+
+		sr_no1=0;
+		sr_no2=0;
+
+		max1=10;
+		max2=10;
+
+		count1=0;
+		count2=0;
+
+		o_patient_id1=10;
+		n_patient_id1=11;
+
+
+	}
+
+	int q1_full()
+	{
+		if(count1==max1)
+			return 1;
+
+		else
+			return 0;
+	}
+
+	int q1_empty()
+	{
+		if(count1==0)
+			return 1;
+
+		else
+			return 0;
+	}
+
+	int q2_full()
+	{
+		if(count2==max2)
+			return 1;
+
+		else
+			return 0;
+	}
+
+	int q2_empty()
+	{
+		if(count2==0)
+			return 1;
+
+		else
+			return 0;
+	}
+
+	public void old_patient_dept1() throws IOException//INSERTION IN BST
+	{
+		Node2 temp;
+		int no=0;
+		do
+		{
+			System.out.print("ENTER PATIENT NAME : ");
+			String patient_name=br.readLine();
+
+			System.out.print("ENTER PATIENT AGE : ");
+			int patient_age=input.nextInt();
+
+			while(patient_age<0)
+			{
+				System.out.print("ENTER VALID AGE : ");
+				patient_age=input.nextInt();
+			}
+			System.out.print("ENTER PATIENT GENDER : ");
+			String patient_gender=br.readLine();
+
+			System.out.print("ENTER PATIENT ADDRESS : ");
+			String patient_address=br.readLine();
+
+			System.out.print("ENTER PATIENT MOBILE NUMBER : ");
+			String patient_ph_no=br.readLine();
+
+			while(patient_ph_no.length()!=10)
+			{
+				System.out.print("ENTER VALID MOBILE NUMBER : ");
+				patient_ph_no=br.readLine();
+			}
+
+			Node2 tree_node=new Node2(o_patient_id1,patient_name,patient_age,patient_gender,patient_address,patient_ph_no);
+			if(root1==null)
+				root1=tree_node;
+
+			else
+			{
+				temp=root1;
+				while(temp!=null)
+				{
+					if(temp.patient_id>tree_node.patient_id)
+					{
+						if(temp.left1==null)
+						{
+							temp.left1=tree_node;
+							break;
+						}
+						else
+							temp=temp.left1;
+					}
+					else if(temp.patient_id<tree_node.patient_id)
+					{
+						if(temp.right1==null)
+						{
+							temp.right1=tree_node;
+							break;
+						}
+						else
+							temp=temp.right1;
+					}
+					else if(temp.patient_id==tree_node.patient_id)
+					{
+						System.out.println("NO DUPLICATION ALLOWED !!");
+						break;
+					}
+				}
+			}
+			o_patient_id1--;
+			System.out.println("Do you want to add more records : ");
+			no=input.nextInt();
+		}while(no==1);			
+	}
+
+	public void book_app_dept1() throws IOException
+	{
+		Node2 temp;
+		String slot;
+		System.out.println("\n\t*********** DEPARTMENT - 3 : PSYCHIATRIST *************");
+		System.out.println("\n\t\t1.Doctor - 1 : Dr. GAUTAM KULKARNI");
+		System.out.println("1.New Patient\t2.Regular Patient");
+		System.out.print("Enter your choice: ");
+		int ch1=input.nextInt();
+
+		switch(ch1)
+		{
+		case 1:
+
+			System.out.print("Enter patient name: ");
+			String patient_name=br.readLine();
+
+			System.out.print("Enter patient age: ");
+			int patient_age=input.nextInt();
+
+			while(patient_age<0)
+			{
+				System.out.print("Please enter a valid age: ");
+				patient_age=input.nextInt();
+			}
+
+			System.out.print("Enter patient gender: ");
+			String patient_gender=br.readLine();
+
+			System.out.print("Enter patient address: ");
+			String patient_address=br.readLine();
+
+			System.out.print("Enter patient phone no: ");
+			String patient_ph_no=br.readLine();
+
+			while(patient_ph_no.length()!=10)
+			{
+				System.out.print("Please enter a 10 digit Phone no: ");
+				patient_ph_no=br.readLine();
+			}
+
+			System.out.println("Enter your symptoms: ");
+			String sym=br.readLine();
+
+			System.out.println("Enter your previous prescription: ");
+			String pres=br.readLine();
+
+			Node2 tree_node1=new Node2(n_patient_id1,patient_name,patient_age,patient_gender,patient_address,patient_ph_no);
+
+			if(root1==null)
+				root1=tree_node1;
+
+			else
+			{
+				temp=root1;
+				while(temp!=null)
+				{
+					if(temp.patient_id>tree_node1.patient_id)
+					{
+						if(temp.left1==null)
+						{
+							temp.left1=tree_node1;
+							break;
+						}
+						else
+							temp=temp.left1;
+					}
+					else if(temp.patient_id<tree_node1.patient_id)
+					{
+						if(temp.right1==null)
+						{
+							temp.right1=tree_node1;
+							break;
+						}
+						else
+							temp=temp.right1;
+					}
+					else if(temp.patient_id==tree_node1.patient_id)
+					{
+						System.out.println("No Duplicates Allowed!!");
+						break;
+					}
+				}
+			}
+
+			System.out.println("1.9 am to 1 pm\t2.4 pm to 8 pm");
+			System.out.println("Enter your slot: ");
+			int ch3=input.nextInt();
+
+			if(ch3==1)
+			{
+				if(q1_full()==1)
+					System.out.println("Queue Full!!");
+
+				else
+				{
+					count1++;
+					sr_no1++;
+					slot="9 am to 1 pm";
+					Node3 queue_node1=new Node3(sr_no1,n_patient_id1,patient_name,slot,patient_age,patient_gender,patient_ph_no,sym,pres);
+					if(front1==null)
+					{
+						front1=queue_node1;
+						rear1=queue_node1;
+					}
+
+					else
+					{
+						rear1.next=queue_node1;
+						rear1=rear1.next;
+					}
+				}
+				System.out.println("**************************************");
+				System.out.println("Appointment Booked Successfully!!");
+				System.out.println("Patient ID: "+n_patient_id1);
+				System.out.println("Patient Name: "+patient_name);
+				System.out.println("Appointment No: "+sr_no1);
+				System.out.println("Slot: 9 am to 1 pm");
+				System.out.println("**************************************");
+				n_patient_id1++;
+			}
+
+			else if(ch3==2)
+			{
+				if(q2_full()==1)
+					System.out.println("Queue Full!!");
+
+				else
+				{
+					count2++;
+					sr_no2++;
+					slot="4 pm to 8 pm";
+					Node3 queue_node2=new Node3(sr_no2,n_patient_id1,patient_name,slot,patient_age,patient_gender,patient_ph_no,sym,pres);
+
+					if(front2==null)
+					{
+						front2=queue_node2;
+						rear2=queue_node2;
+					}
+
+					else
+					{
+						rear2.next=queue_node2;
+						rear2=rear2.next;
+					}
+				}
+				System.out.println("**************************************");
+				System.out.println("Appointment Booked Successfully!!");
+				System.out.println("Patient ID: "+n_patient_id1);
+				System.out.println("Patient Name: "+patient_name);
+				System.out.println("Appointment No: "+sr_no2);
+				System.out.println("Slot: 4 pm to 8 pm");
+				System.out.println("**************************************");
+				n_patient_id1++;
+			}
+			else
+				System.out.println("Invalid Choice");
+
+			break;
+
+		case 2://for regular patient
+
+			int flag=0;
+			System.out.print("Enter Patient ID: ");
+			int id=input.nextInt();
+
+			temp=root1;
+			if(root1==null)
+				System.out.println("Tree Not Created!!");
+
+			else
+			{
+				while(temp!=null)
+				{
+					if(temp.patient_id>id)
+					{
+						temp=temp.left1;
+					}
+					else if(temp.patient_id<id)
+						temp=temp.right1;
+
+					else if(temp.patient_id==id)
+					{
+						flag=1;
+						break;
+					}
+				}
+				if(flag==1)
+				{
+					System.out.println("Patient Record Found!!");
+
+					String name=temp.patient_name;
+					int age=temp.patient_age;
+					String gender=temp.patient_gender;
+					String phno=temp.patient_ph_no;
+					int patient_id=temp.patient_id;
+
+					System.out.print("Enter Symptoms: ");
+					String symp=br.readLine();
+
+					System.out.println("Enter previous prescription: ");
+					String pre=br.readLine();
+
+					System.out.println("1.9 am to 1 pm\t2.4 pm to 8 pm");
+					System.out.println("Enter your slot: ");
+					int ch4=input.nextInt();
+
+					if(ch4==1)
+					{
+						count1++;
+						sr_no1++;
+						slot="9 am to 1 pm";
+
+						Node3 queue_node1=new Node3(sr_no1,patient_id,name,slot,age,gender,phno,symp,pre);
+						if(front1==null)
+						{
+							front1=queue_node1;
+							rear1=queue_node1;
+						}
+
+						else
+						{
+							rear1.next=queue_node1;
+							queue_node1.prev=rear1;
+							rear1=rear1.next;
+						}
+						System.out.println("*************************************");
+						System.out.println("Appointment Booked Successfully!!");
+						System.out.println("Patient ID: "+patient_id);
+						System.out.println("Patient Name: "+name);
+						System.out.println("Appointment No: "+sr_no1);
+						System.out.println("Slot: 9 am to 1 pm");
+						System.out.println("*************************************");
+					}
+
+					else if(ch4==2)
+					{
+						count2++;
+						sr_no2++;
+						slot="4 pm to 8 pm";
+						Node3 queue_node2=new Node3(sr_no2,patient_id,name,slot,age,gender,phno,symp,pre);
+
+						if(front2==null)
+						{
+							front2=queue_node2;
+							queue_node2.prev=rear2;
+							rear2=queue_node2;
+						}
+
+						else
+						{
+							rear2.next=queue_node2;
+							rear2=rear2.next;
+						}
+						System.out.println("*************************************");
+						System.out.println("Appointment Booked Successfully!!");
+						System.out.println("Patient ID: "+patient_id);
+						System.out.println("Patient Name: "+name);
+						System.out.println("Appointment No: "+sr_no2);
+						System.out.println("Slot: 4 pm to 8 pm");
+						System.out.println("*************************************");
+					}
+
+					else
+						System.out.println("Invalid Choice");
+
+
+				}
+				else
+					System.out.println("Patient Record Not Found!!");
+			}
+
+			break;
+
+		default:
+			System.out.println("Invalid Choice!!");
+		}
+
+	}
+
+	public void display_q1()
+	{
+		Node3 temp;
+
+		if(q1_empty()==1)
+			System.out.println("No Appointments Booked Yet!!");
+
+		else
+		{
+			temp=front1;
+			while(temp!=null)
+			{
+				System.out.println("**********************************");
+				System.out.println("Appointment No: "+temp.sr_no);
+				System.out.println("Patient ID: "+temp.patient_id);
+				System.out.println("Patient Name: "+temp.patient_name);
+				System.out.println("Patient Age: "+temp.patient_age);
+				System.out.println("Patient Gender: "+temp.patient_gender);
+				System.out.println("Symptoms: "+temp.symptoms);
+				System.out.println("Previous Prescription: "+temp.prescription);
+				System.out.println("**********************************");
+
+				temp=temp.next;
+			}
+		}
+	}
+
+	public void display_q2()
+	{
+		Node3 temp;
+		if(q2_empty()==1)
+			System.out.println("No Appointments Booked Yet!!");
+
+		else
+		{
+			temp=front2;
+			while(temp!=null)
+			{
+				System.out.println("**********************************");
+				System.out.println("Appointment No: "+temp.sr_no);
+				System.out.println("Patient ID: "+temp.patient_id);
+				System.out.println("Patient Name: "+temp.patient_name);
+				System.out.println("Patient Age: "+temp.patient_age);
+				System.out.println("Patient Gender: "+temp.patient_gender);
+				System.out.println("Symptoms: "+temp.symptoms);
+				System.out.println("Previous Prescription: "+temp.prescription);
+				System.out.println("**********************************");
+
+				temp=temp.next;
+			}
+		}
+	}
+
+	public void display_q1q2()
+	{
+		Node3 temp;
+		System.out.println("------Slot 1------");
+
+		temp=front1;
+		while(temp!=null)
+		{
+			System.out.println("**********************************");
+			System.out.println("Appointment No: "+temp.sr_no);
+			System.out.println("Patient ID: "+temp.patient_id);
+			System.out.println("Patient Name: "+temp.patient_name);
+			System.out.println("Patient Age: "+temp.patient_age);
+			System.out.println("Patient Gender: "+temp.patient_gender);
+			System.out.println("Symptoms: "+temp.symptoms);
+			System.out.println("Previous Prescription: "+temp.prescription);
+			System.out.println("**********************************");
+
+			temp=temp.next;
+		}
+
+		System.out.println("------Slot 2------");
+
+		temp=front2;
+		while(temp!=null)
+		{
+			System.out.println("**********************************");
+			System.out.println("Appointment No: "+temp.sr_no);
+			System.out.println("Patient ID: "+temp.patient_id);
+			System.out.println("Patient Name: "+temp.patient_name);
+			System.out.println("Patient Age: "+temp.patient_age);
+			System.out.println("Patient Gender: "+temp.patient_gender);
+			System.out.println("Symptoms: "+temp.symptoms);
+			System.out.println("Previous Prescription: "+temp.prescription);
+			System.out.println("**********************************");
+
+			temp=temp.next;
+		}
+	}
+
+	public void delete_q1()
+	{
+		System.out.print("Enter your patient id: ");
+		int id=input.nextInt();
+		int flag=0;
+
+		Node3 temp;
+		temp=front1;
+
+		while(temp!=null)
+		{
+			if(temp.patient_id==id)
+			{
+				flag=1;
+				break;
+			}
+			temp=temp.next;
+		}
+
+		if(flag==1)
+		{
+			if(temp.next==null&&temp.prev==null)
+			{
+				temp=null;
+				front1=null;
+				rear1=null;
+			}
+			else if(temp==front1)
+			{
+				front1=front1.next;
+				front1.prev=null;
+				temp.next=null;
+				temp=null;
+			}
+			else if(temp==rear1)
+			{
+				rear1=rear1.prev;
+				rear1.next=null;
+				temp.prev=null;
+				temp=null;
+			}
+			else
+			{
+				temp.prev.next=temp.next;
+				temp.next.prev=temp.prev;
+
+				temp.prev=null;
+				temp.next=null;
+				temp=null;
+			}
+			count1--;
+			System.out.println("Appointment Deleted Successfully!!");
+		}
+		else
+			System.out.println("Patient record not Found!!");
+	}
+	public void delete_q2()
+	{
+		System.out.print("Enter your patient id: ");
+		int id=input.nextInt();
+		int flag=0;
+
+		Node3 temp;
+		temp=front2;
+
+		while(temp!=null)
+		{
+			if(temp.patient_id==id)
+			{
+				flag=1;
+				break;
+			}
+			temp=temp.next;
+		}
+
+		if(flag==1)
+		{
+			if(temp.next==null&&temp.prev==null)
+			{
+				temp=null;
+				front2=null;
+				rear2=null;
+			}
+			else if(temp==front2)
+			{
+				front2=front2.next;
+				front2.prev=null;
+				temp.next=null;
+				temp=null;
+			}
+			else if(temp==rear2)
+			{
+				rear2=rear2.prev;
+				rear2.next=null;
+				temp.prev=null;
+				temp=null;
+			}
+			else
+			{
+				temp.prev.next=temp.next;
+				temp.next.prev=temp.prev;
+				temp=null;
+			}
+			count2--;
+			System.out.println("Appointment Deleted Successfully!!");
+		}
+	}
+
+	public void display_record(Node2 root) {
+
+		if(root!=null)
+		{
+			display_record(root.left1);
+			System.out.println(root.patient_id+"\t\t"+root.patient_name+"\t\t"+root.patient_age+"\t\t"+root.patient_gender+"\t\t"+root.patient_address+"\t\t"+root.patient_ph_no);			
+			display_record(root.right1);
+		}
+	}
+
+	public void update_tree() throws IOException
+	{
+		Node2 temp;
+
+		int flag=0;
+
+		System.out.print("Enter Patient ID: ");
+		int id=input.nextInt();
+
+		temp=root1;
+		if(root1==null)
+			System.out.println("Tree Not Created!!");
+
+		else
+		{
+			while(temp!=null)
+			{
+				if(temp.patient_id>id)
+				{
+					temp=temp.left1;
+				}
+				else if(temp.patient_id<id)
+					temp=temp.right1;
+
+				else if(temp.patient_id==id)
+				{
+					flag=1;
+					break;
+				}
+			}
+			if(flag==0)
+			{
+				System.out.println("Patient Record Not Found!!");
+			}
+			else
+			{
+				System.out.println("Patient Record Found!!");
+				System.out.print("1.Patient Age\t2.Patient Address\t3.Patient Mobile No");
+				System.out.print("Enter your choice: ");
+				int ch=input.nextInt();
+
+				switch(ch)
+				{
+				case 1:
+					System.out.print("Enter new age: ");
+					int n_age=input.nextInt();
+
+					while(n_age<0)
+					{
+						System.out.print("Please enter a valid age: ");
+						n_age=input.nextInt();
+					}
+					temp.patient_age=n_age;
+
+					break;
+
+				case 2:
+					System.out.print("Enter new address: ");
+					String n_addr=input.next();
+
+					temp.patient_address=n_addr;
+					break;
+
+				case 3:
+					System.out.print("Enter new Mobile no: ");
+					String n_no=br.readLine();
+
+					while(n_no.length()!=10)
+					{
+						System.out.print("Please enter a 10 digit Mobile No: ");
+						n_no=br.readLine();
+					}
+
+					temp.patient_ph_no=n_no;
+					break;
+
+				default:
+					System.out.println("Invalid Choice!");
+				}
+			}
+		}
+	}
+
+}
diff --git a/Doctors.java b/Doctors.java
new file mode 100644
index 0000000..5ea66ac
--- /dev/null
+++ b/Doctors.java
@@ -0,0 +1,199 @@
+package services;
+
+import node.Node1;
+import java.util.Scanner;
+import java.io.InputStreamReader;
+import java.io.BufferedReader;
+import java.io.IOException;
+
+public class Doctors {
+	
+	Scanner sc = new Scanner(System.in);
+	
+	String doc_name;
+	String qualification;
+	String department;
+	int experience;
+	
+	Node1 head;
+	Node1 tail;
+	InputStreamReader r = new InputStreamReader(System.in);    
+    BufferedReader br=new BufferedReader(r);
+	public Doctors(){
+		head = null;
+		tail = null;
+	}
+	public void insert() throws IOException {
+		System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		System.out.print("\nENTER DOCTOR NAME : "+"Dr. ");
+		doc_name = br.readLine();
+		System.out.print("\nENTER QUALIFICATION : "); 
+		qualification = br.readLine();
+		System.out.print("\nENTER DEPARTMENT : "); 
+		department = br.readLine();
+		System.out.print("\nENTER EXPERIENCE : ");
+		experience = sc.nextInt();
+		System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		Node1 ptr;
+		Node1 prev;
+		Node1 cur;
+		prev = null;
+		cur = head;
+		
+		while(cur != null && (cur.name.compareTo(doc_name) < 0)) {
+			prev = cur;
+			cur = cur.next;
+		}
+		if(cur != null && (cur.name.equals(doc_name))) {
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			System.out.println("DUPLICATION NOT ALLOWED !!");
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		}
+		else {
+			ptr = new Node1();
+			ptr.name = doc_name;
+			ptr.quali = qualification;
+			ptr.depart = department;
+			ptr.exp = experience;
+			ptr.next = null;
+			ptr.back = null;
+			if(head == null) {
+				head = ptr;
+				tail = ptr;
+				//System.out.println("Creted 1 st node......");
+			}
+			else if(prev == null) {
+				ptr.next = head;
+				cur.back =ptr;
+				head = ptr;
+				//System.out.println("\n inserted @ head");
+			}
+			else if(prev != null && cur == null) {
+				/*
+				 * insert @ end
+				 */
+				prev.next = ptr;
+				ptr.back = prev;
+				tail = ptr;
+				//System.out.println("\ninserted @ end");
+			}
+			else {
+				/*insert in between*/
+				prev.next = ptr;
+				ptr.back = prev;
+				cur.back = ptr;
+				ptr.next = cur;
+				//System.out.println("\n inserted in between");
+			}
+		}
+		
+	}
+	public void delete() throws IOException {
+		Node1 cur;
+		Node1 prev;
+		String doc_name1;
+		System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		System.out.print("\nENTER DOCTOR NAME TO DELETE : ");
+		doc_name1 = br.readLine();
+		if(head == null) {
+			System.out.println("\nDOCTORS LIST IS EMPTY");
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		}
+		else {
+			prev = null;
+			cur = head;
+			while(cur != null && cur.name.compareTo(doc_name1) < 0) {
+				prev = cur;
+				cur = cur.next;
+			}
+			if(cur != null && !(cur.name.equals(doc_name1))) {
+				System.out.println("\nDOCTOR NAME DOES NOT EXIST...");
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			}
+			else {
+				
+				if(prev == null && cur.next == null) {
+					/*cur is only node to delete*/
+					head = null;
+					tail = null;
+					cur = null;
+					//System.out.println("\nDeleted only node...");
+					System.out.println("\nDELETED SUCCESSFULLY !!!!");
+					System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				}
+				else if(prev == null) {
+					/*delete from head*/
+					cur.next.back = null;
+					head = cur.next;
+					cur.next = null;
+					cur = null;
+					//System.out.println("\ndeleted from head");
+					System.out.println("\nDELETED SUCCESSFULLY !!!!");
+					System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				}
+				else if(prev != null && cur.next == null) {
+					cur.back = null;
+					prev.next = null;
+					tail = prev;
+					//System.out.println("\ndeleted from end");
+					System.out.println("\nDELETED SUCCESSFULLY !!!!");
+					System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				}
+				else {
+					/*delete from in between*/
+					prev.next = cur.next;
+					cur.next.back = prev;
+					cur.next = null;
+					cur.back = null;
+					cur = null;
+					//System.out.println("\ndeleted from between");
+					System.out.println("\nDELETED SUCCESSFULLY !!!!");
+					System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				}
+			}
+		}
+	}
+	public void display() {
+		Node1 cur;
+		if(head == null) {
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			System.out.println("\nDOCTORS LIST IS EMPTY...");
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		}
+		else {
+			cur = head;
+			System.out.println();
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			
+			System.out.println("   NAME \t\t\t\t  QUALIFICATION \t\t\t   DEPARTMENT\t\t       EXPERIENCE(yrs)\n");
+			while(cur != null) {
+				System.out.println("Dr."+cur.name+"\t\t\t\t"+cur.quali+"\t\t\t\t"+cur.depart+"\t\t\t  "+cur.exp);
+				cur = cur.next;
+			}
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		}
+	}
+	void show_reverse() {
+		Node1 cur;
+		if(head == null) {
+			System.out.println("\nDOCTORS LIST IS EMPTY ...");
+		}
+		else {
+			cur = head;
+			/*now traverse till last node*/
+			while(cur.next != null) {
+				cur = cur.next;
+			}
+			System.out.println();
+			System.out.println("_______________________________________________________________________________________________\n");
+			System.out.println("NAME \t QUALIFICATION \t DEPARTMENT \t EXPERIENCE");
+			while(cur != null) {
+				System.out.println(cur.name+"\t"+cur.quali+"\t"+cur.depart+"\t"+cur.exp);
+				cur = cur.back;
+			}
+			System.out.println("_______________________________________________________________________________________________\n");	
+		}
+	}
+}
+
+
diff --git a/Events.java b/Events.java
new file mode 100644
index 0000000..3371304
--- /dev/null
+++ b/Events.java
@@ -0,0 +1,214 @@
+package services;
+
+import node.Node;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+import java.util.Scanner;
+
+public class Events {
+	InputStreamReader r=new InputStreamReader(System.in);
+	BufferedReader br=new BufferedReader(r);
+
+	Node front;
+	Node rear;
+	Node temp;
+	int max_count;
+	int count;
+	int event_no;
+	public Events(){
+		front=null;
+		rear=null;
+		max_count=10;
+		count=0;
+		event_no=count;
+	}
+	
+
+	int q_full(){
+		if(count==max_count)
+			return 1;
+
+		else
+			return 0;
+	}
+
+	int q_empty(){
+		if(count==0)
+			return 1;
+
+		else
+			return 0;
+	}
+
+	public void insert() throws IOException{
+		if(q_full()!=1){
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			System.out.print("\nENTER NO OF EVENTS : ");
+			int no = Integer.parseInt(br.readLine());
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			
+			for(int i=0;i<no;i++){
+				Node new_node=new Node();
+				count++;
+				new_node.event_no=count;
+				
+				System.out.print("\nENTER EVENT NAME "+new_node.event_no+": ");
+				new_node.event_name=br.readLine();
+
+				System.out.print("\nENTER EVENT DATE : ");
+				new_node.event_date=br.readLine();
+
+				DateTimeFormatter format = DateTimeFormatter.ofPattern("d MMMM, yyyy");
+
+				LocalDate dt1 = LocalDate.parse(new_node.event_date,format);
+
+
+				System.out.print("\nENTER EVENT TIME : ");
+				new_node.event_time=br.readLine();			
+
+				System.out.print("\nENTER EVENT DETAILS "+new_node.event_no+": ");
+				new_node.event_details=br.readLine();
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+
+				if(front==null){
+					front=new_node;
+					rear=new_node;
+					System.out.println("\nSUCCESSFULLY ENTERED THE EVENT DETAILS!!!!!!");
+				}
+				else{
+					temp=front;
+					while(temp.next!=null){
+						temp=temp.next;
+					}
+					temp.next=new_node;
+					new_node.prev=rear;
+					rear=rear.next;
+					System.out.println("\nSUCCESSFULLY ENTERED THE EVENT DETAILS !!!!!!");
+				}
+			}
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		}
+		else
+			System.out.println("\nQUEUE IS FULL!!");
+	}
+	public void display(){
+		if(q_empty()!=1){
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			System.out.println("\nEVENT NAME \tEVENT DATE \tEVENT TIME \tEVENT DETAILS\n");
+			temp=front;
+			while(temp!=null){
+				System.out.println(temp.event_name+"\t\t"+temp.event_date+"\t\t"+temp.event_time+"\t\t"+temp.event_details);
+				temp=temp.next;
+				}
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		}
+		else {
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			System.out.println("\nEVENT DETAILS TO BE AANOUNCED !!!!!");
+			System.out.println("\nSTAY CONNECTED !!");
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+	}
+	}
+	public void search() throws IOException{
+		if(q_empty()!=1){
+			temp=front;
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			System.out.print("\nENTER EVENT NAME  : ");
+			String search=br.readLine();
+			int flag=0;
+
+			while(temp!=null){
+				if(temp.event_name.equals(search)){
+					flag=1;
+					break;
+				}
+
+				temp=temp.next;
+			}
+			if(flag==0) {
+				
+				System.out.println("EVENT NOT FOUND !!!");
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			}
+			else{
+				System.out.println("EVENT FOUND !!! ");
+				System.out.println("\n******* EVENT DETAILS *******");
+				System.out.println("\nEVENT NO : "+temp.event_no);
+				System.out.println("EVENT NAME : "+temp.event_name);
+				System.out.println("EVENT DETAILS : "+temp.event_details);
+				System.out.println("EVENT DATE : "+temp.event_date);
+				System.out.println("EVENT TIME : "+temp.event_time);
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			}
+		}
+		else {
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			System.out.println("NO EVENT ANNOUNCED YET !!");
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+	}
+	}
+	public void delete() throws IOException{
+		if(q_empty()!=1){
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			System.out.print("ENTER EVENT NAME : ");
+			String delete=br.readLine();
+			int flag=0;
+
+			temp=front;
+			while(temp!=null){
+				while(temp!=null){
+					if(temp.event_name.equals(delete)){
+						flag=1;
+						break;
+					}
+
+					temp=temp.next;
+				}
+				if(flag==0) {
+					//System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+					System.out.println("EVENT NOT FOUND !!");
+					System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				}
+				else{
+					if(temp==front&&temp==rear){
+						temp=null;
+						front=null;
+						rear=null;		
+					}
+					else if(temp==front&&temp!=rear){
+						front=front.next;
+						temp.next=null;
+						temp=null;
+					}
+					else if(temp==rear && temp!=front){
+						rear=rear.prev;
+						rear.next=null;
+						temp.prev=null;
+						temp=null;
+					}
+					else
+					{
+						temp.next.prev=temp.prev;
+						temp.prev.next=temp.next;
+						temp.prev=null;
+						temp.next=null;
+						temp=null;
+
+					}
+					count--;
+					System.out.println("EVENT DELETED!!");
+					System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				}
+			}
+		}
+		else {
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			System.out.println("NO REGISTRATIONS YET !!!");
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+	}
+	}
+}
+
diff --git a/Free_Checkup.java b/Free_Checkup.java
new file mode 100644
index 0000000..c7f02ee
--- /dev/null
+++ b/Free_Checkup.java
@@ -0,0 +1,271 @@
+package services;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.Scanner;
+
+import node.Node4;
+
+public class Free_Checkup {
+
+	InputStreamReader r=new InputStreamReader(System.in);
+	BufferedReader br=new BufferedReader(r);
+
+	Node4 front;
+	Node4 rear;
+	Node4 temp;
+	int max_count;
+	int count;
+	int patient_id;
+	
+	public Free_Checkup()
+	{
+		rear=null;
+		front=null;
+		max_count=10;
+		count=0;
+		patient_id=0;
+	}
+
+	int q_full()
+	{
+		if(count==max_count)
+			return 1;
+
+		else
+			return 0;
+	}
+
+	int q_empty()
+	{
+		if(count==0)
+			return 1;
+
+		else
+			return 0;
+	}
+	public void insert() throws IOException
+	{
+		int n=0;
+
+		do {
+			if(q_full()==1)
+				System.out.println("\nQueue Full!!");
+
+			else
+			{
+				System.out.print("\nEnter the number of records to be added: ");
+				int no = Integer.parseInt(br.readLine());
+
+				for(int i=0;i<no;i++)
+				{
+					patient_id++;
+					count++;
+					System.out.print("\nEnter patient name: ");
+					String patient_name=br.readLine();
+
+					System.out.print("\nEnter patient age: ");
+					int patient_age=Integer.parseInt(br.readLine());
+
+					System.out.print("\nEnter patient gender: ");
+					String patient_gender=br.readLine();
+
+					System.out.print("\nEnter patient address: ");
+					String patient_address=br.readLine();
+
+					System.out.print("\nEnter patient phone no: ");
+					String patient_ph_no=br.readLine();
+
+					while(patient_ph_no.length()!=10)
+					{
+						System.out.println("\nPlease enter 10 digit no!!");
+						patient_ph_no=br.readLine();
+					}
+					Node4 new_node=new Node4(patient_id,patient_name,patient_age,patient_gender,patient_address,patient_ph_no);
+
+					if(front==null && rear==null)
+					{
+						front=new_node;
+						rear=new_node;
+					}
+					else
+					{
+						temp=front;
+
+						while(temp.next!=null)
+						{
+							temp=temp.next;
+						}
+						temp.next=new_node;
+						new_node.prev=rear;
+						rear=rear.next;
+					}
+					System.out.println("\nPatient ID: "+patient_id);
+					System.out.println("\nRegistered Successfully!!");
+				}
+			}
+			System.out.println("Do You Want To Continue?");
+			System.out.println("\nPRESS : ");
+			System.out.println("\n\t1 to CONTINUE");
+			System.out.println("\t0 to EXIT");
+			n=Integer.parseInt(br.readLine());
+			if(n == 0) {
+				System.out.println("\nTHANK FOR VISITING");
+			}
+			
+		}while(n==1);
+	}
+
+	public void display_free_checkup()
+	{
+		if(q_empty()==1)
+			System.out.println("Queue Empty!!");
+
+		else
+		{
+			System.out.println("\nTotal No Of Registrations: "+count);
+			System.out.println("\nPatient ID\tPatient Name\tPatient Age\tPatient Gender\tPatient Address\tPh No");
+			temp=front;
+			while(temp!=null)
+			{
+				System.out.println(temp.patient_id+"\t\t"+temp.patient_name+"\t\t"+temp.patient_age+"\t\t"+temp.patient_gender+"\t\t"+temp.patient_address+"\t\t"+temp.patient_ph_no);
+				temp=temp.next;
+			}
+		}
+	}
+
+	public void search() throws NumberFormatException, IOException
+	{
+
+		int no=0;
+
+		do {
+			if(q_empty()!=1)
+			{
+				System.out.print("\nEnter the Patient ID to be searched: ");
+				int search_id=Integer.parseInt(br.readLine());
+				int flag=0;
+
+				temp=front;
+				while(temp!=null)
+				{
+					if(temp.patient_id==search_id)
+					{
+						flag=1;
+						break;
+					}
+					else
+						temp=temp.next;
+				}
+				if(flag==1)
+				{
+					System.out.println("\nPATIENT IS FOUND!");
+					System.out.println("\nPatient ID: "+temp.patient_id);
+					System.out.println("\nPatient Name: "+temp.patient_name);
+					System.out.println("\nPatient Age: "+temp.patient_age);
+					System.out.println("\nPatient Gender: "+temp.patient_gender);
+					System.out.println("\nPatient Address: "+temp.patient_address);
+					System.out.println("\nPatient Ph No: "+temp.patient_ph_no);
+
+				}
+				else
+					System.out.println("\nPatient Not Found!");
+			}
+			else
+				System.out.println("\nNo Registrations Yet!");
+
+			System.out.println("\nDo You Want To Continue?");
+			System.out.println("\nPRESS : ");
+			System.out.println("\n\t1 to CONTINUE");
+			System.out.println("\t0 to EXIT");
+			no=Integer.parseInt(br.readLine());
+			if(no == 0) {
+				System.out.println("\nTHANK FOR VISITING");
+			}
+		}while(no==1);
+
+	}
+
+	public void delete() throws NumberFormatException, IOException
+	{
+		int no=0;
+
+		do {
+			if(q_empty()!=1)
+			{
+				System.out.print("\nEnter the Patient Id: ");
+				int delete_id=Integer.parseInt(br.readLine());
+
+				int flag=0;
+
+				temp=front;
+				while(temp!=null)
+				{
+					if(temp.patient_id==delete_id)
+					{
+						flag=1;
+						break;
+					}
+					else
+						temp=temp.next;
+				}
+				if(flag==1)
+				{
+					System.out.println("\nPATIENT FOUND!");
+					if(temp==front&&temp==rear)
+					{
+						//if(temp.next==null)//ONLY 1 EVENT REGISTERED
+						//{
+						temp=null;
+						front=null;
+						rear=null;
+					}
+					else if(temp==front&&temp!=rear)
+					{
+						front=front.next;
+						temp.next=null;
+						temp=null;
+
+					}
+
+					else if(temp==rear && temp!=front)
+					{
+						rear=rear.prev;
+						rear.next=null;
+						temp.prev=null;
+						temp=null;
+					}
+					else
+					{
+						temp.next.prev=temp.prev;
+						temp.prev.next=temp.next;
+						temp.prev=null;
+						temp.next=null;
+						temp=null;
+
+					}
+					count--;
+					System.out.println("\nRegistration Deleted!");
+				}
+				else
+					System.out.println("\nPatient Not Found!");
+			}
+			else
+				System.out.println("\nNo Registrations Yet!!");
+
+			System.out.println("\nDo You Want To Continue?");
+			System.out.println("\nPRESS : ");
+			System.out.println("\n\t1 to CONTINUE");
+			System.out.println("\t0 to EXIT");
+			no=Integer.parseInt(br.readLine());
+			if(no == 0) {
+				System.out.println("\nTHANK FOR VISITING");
+			}
+			
+			
+		}while(no==1);
+	}
+
+}
+
diff --git a/Hospital.java b/Hospital.java
new file mode 100644
index 0000000..deefa32
--- /dev/null
+++ b/Hospital.java
@@ -0,0 +1,921 @@
+package Hospital_maganement;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.Scanner;
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+import appointment.Appointment_Dept1;
+import appointment.Appointment_Dept2;
+import appointment.Appointment_Dept3;
+import services.About_us;
+import services.Doctors;
+import services.Events;
+import services.Free_Checkup;
+import services.Medicine;
+import services.Reviews;
+
+public class Hospital {
+	public static void main(String[] args) throws IOException {
+		Scanner sc = new Scanner(System.in);
+		Scanner input = new Scanner(System.in);
+		Doctors obj1=new Doctors();
+		Events obj2=new Events();
+		Reviews obj3=new Reviews();
+		Free_Checkup obj4=new Free_Checkup();
+		Appointment_Dept1 obj5=new Appointment_Dept1();
+		Appointment_Dept2 obj6=new Appointment_Dept2();
+		Appointment_Dept3 obj7=new Appointment_Dept3();
+		Medicine obj8=new Medicine();
+		int ans;
+		int choice;
+		int answer;
+		System.out.println("\n\t******** WELCOME **********");
+		System.out.println("\n\n\t-------- LOGIN AS -------- ");
+		System.out.println("\n\t\t1.ADMIN\n\t\t2.USER");
+		do {
+			System.out.print("\nENTER YOUR CHOICE : ");
+			int ch=input.nextInt();
+			switch(ch)
+			{
+			case 1:
+				System.out.println("\n\t\t*************** MENU ***************");
+				System.out.println("\n\t\t\t 1.HOME");
+				System.out.println("\n\t\t\t 2.ABOUT US");
+				System.out.println("\n\t\t\t 3.DOCTORS");
+				System.out.println("\n\t\t\t 4.SERVICES");
+				System.out.println("\n\t\t\t 5.REVIEWS");
+				System.out.println("\n\t\t\t 6.APPOINTMENTS");
+				System.out.println("\n=============================================================================");
+				System.out.println("=============================================================================");
+				do {
+					System.out.print("\nENTER YOUR CHOICE  : ");
+					choice = sc.nextInt();
+					switch(choice) {
+					case 1:
+						System.out.println("\n");
+						System.out.println("=============================================================================");
+						System.out.println("=============================================================================");
+						System.out.println("\n\t\t\t\t   WELCOME to");
+						System.out.println("\t\t\tSWAYAM MULTI - SPECIALITY Hospital");
+						System.out.println("\n\n\t\t\tMaking Health Care Better Together");
+						System.out.println("\n\tFrom preventive Care and Checkups, to immuunizations and exams, ");
+						System.out.println("\tour primary care physicians and provides work to keep you and ");
+						System.out.println("\tyour whole family healthy and strong each and every day.");
+						System.out.println("\n=============================================================================");
+						System.out.println("=============================================================================");	
+						break;
+					case 2:
+						System.out.println("\n");
+						System.out.println("=============================================================================");
+						System.out.println("=============================================================================");
+						System.out.println("\n\t\t\t\tABOUT US");
+						About_us.main(args);
+						System.out.println("\n=============================================================================");
+						System.out.println("=============================================================================");
+						break;
+					case 3:
+						int no=0;
+						System.out.println("\n");
+						System.out.println("=============================================================================");
+						System.out.println("=============================================================================");
+						System.out.println("\n\t\t\t\tDOCTORS ");
+						System.out.println("\n\t\t*************** MENU ***************");
+						System.out.println("\n\t\t\t 1.INSERT DOCTOR INFORMATION");
+						System.out.println("\n\t\t\t 2.DISPLAY DOCTORS RECORD");
+						System.out.println("\n\t\t\t 3.DELETE DOCTOR RECORD");
+						do {
+							System.out.print("\nENTER YOUR CHOICE : ");
+							int chh=input.nextInt();
+							switch(chh)
+							{
+							case 1:
+								obj1.insert();
+								break;
+							case 2:
+								obj1.display();
+								break;
+							case 3:
+								obj1.delete();
+								break;
+							default:
+								System.out.println("INVALID CHOICE !!");
+							}
+							System.out.println("\nDo You Want To Continue?");
+							System.out.println("\nPress : ");
+							System.out.println("\t1 to CONTINUE");
+							System.out.println("\t0 to EXIT");
+							no=input.nextInt();
+							if(no == 0) {
+								System.out.println("\nTHANK FOR VISITING");
+							}
+						}while(no==1);
+						System.out.println("\n=============================================================================");
+						System.out.println("=============================================================================\n");
+						break;
+					case 4:
+						System.out.println("\n");
+						System.out.println("=============================================================================");
+						System.out.println("=============================================================================");
+						System.out.println("\n\t\t\t\tSERVICES ");
+						System.out.println("\n\t\t*************** MENU ***************");
+						System.out.println("\n\t\t\t 1.ENTER EVENT DETAILS");
+						System.out.println("\n\t\t\t 2.DISPLAY EVENT DETAILS");		
+						System.out.println("\n\t\t\t 3.DISPLAY THE REGISTRATIONS FOR FREE CHECKUP");
+						System.out.println("\n\t\t\t 4.MEDICAL FACILITIES");
+						System.out.println("\n=============================================================================");
+						System.out.println("=============================================================================\n");
+						System.out.print("\nENTER YOUR CHOICE : ");
+						int chh=input.nextInt();
+						switch(chh)
+						{
+						case 1:
+							obj2.insert();
+							break;
+						case 2:
+							obj2.display();
+							break;
+						case 3:
+							obj4.display_free_checkup();
+							break;
+						case 4:
+							int no1=0;
+							System.out.println("\n");
+							System.out.println("=============================================================================");
+							System.out.println("=============================================================================");
+							System.out.println("\n\t\t\t\tMEDICAL ");
+							System.out.println("\n\t\t*************** MENU ***************");
+							System.out.println("\n\t\t\t 1.INSERT MEDICINE DATA");
+							System.out.println("\n\t\t\t 2.DISPLAY MEDICINE DATA");
+							System.out.println("\n\t\t\t 3.SEARCH FOR A MEDICINE");
+							System.out.println("\n\t\t\t 4.DELETE A PARTICULAR MEDICINE DATA");
+							System.out.println("\n\t\t\t 5.UPDATE A PARTICULAT MEDICINE DATA");
+							System.out.println("\n=============================================================================");
+							System.out.println("=============================================================================");
+							do {
+								System.out.print("ENTER YOUR CHOICE : ");
+								int ch1=input.nextInt();
+								switch(ch1)
+								{
+								case 1:
+									obj8.insert();
+									break;
+								case 2:
+									obj8.display();
+									break;
+								case 3:
+									obj8.search();
+									break;
+								case 4:
+									obj8.delete();
+									break;
+								case 5:
+									obj8.update();
+									break;
+								default:
+									System.out.println("INVALID CHOICE !!");
+								}
+								System.out.println("Do You Want To Continue?");
+								//System.out.println("Do you want to visit another page ???");
+								System.out.println("Press : ");
+								System.out.println("\t1 to CONTINUE");
+								System.out.println("\t0 to EXIT");
+								no1=input.nextInt();
+								if(no1 == 0) {
+									System.out.println("\nTHANK FOR VISITING");
+								}
+							}while(no1==1);
+						}
+						System.out.println("\n=============================================================================");
+						System.out.println("=============================================================================");
+						break;
+					case 5:
+						System.out.println("\n");
+						System.out.println("=============================================================================");
+						System.out.println("=============================================================================");
+						System.out.println("\n\t\t\t\tREVIEWS ");
+						obj3.display();
+						System.out.println("\n=============================================================================");
+						System.out.println("=============================================================================");
+						break;
+					case 6:
+						int no3=0;
+						int no4=0;
+						int no5=0;
+						System.out.println("\n");
+						System.out.println("=============================================================================");
+						System.out.println("=============================================================================");
+						System.out.println("\n\t\t\t\tAPPOINTMENTS ");
+						System.out.println("\n\t\t*************** MENU ***************");
+						System.out.println("\n\t\t\t 1.DEPARTMENT - 1 : PEDIATRICIAN");
+						System.out.println("\n\t\t\t 2.DEPARTMENT - 2 : DERMATOLOGIST");
+						System.out.println("\n\t\t\t 3.DEPARTMENT - 3 : PSYCHIATRIST");
+						//System.out.println("\n=============================================================================");
+						//System.out.println("=============================================================================");
+						do {
+							System.out.print("\nENTER YOUR CHOICE : ");
+							int ch1=input.nextInt();
+							switch(ch1)
+							{
+							case 1: //Departmentt - 1 : Pediatrician
+								System.out.println("\n");
+								System.out.println("=============================================================================");
+								System.out.println("=============================================================================");
+								//System.out.println("\n\t\t\t\tAPPOINTMENTS ");
+								System.out.println("\n\t\t*************** MENU ***************");
+								System.out.println("\n\t\t\t 1.INSERT OLD PATIENT DETAILS");
+								System.out.println("\n\t\t\t 2.DISPLAY PATIENTS HISTORY");
+								System.out.println("\n\t\t\t 3.DISPLAY ALL APPOINTMENTS");
+								//System.out.println("\n=============================================================================");
+								//System.out.println("=============================================================================");
+								do {
+									System.out.print("\nENTER YOUR CHOICE : ");
+									int ch2=input.nextInt();
+									switch(ch2)
+									{
+									case 1:
+										obj5.old_patient_dept1();
+										break;
+									case 2:
+										obj5.display_record(obj5.root1);
+										break;
+									case 3:
+										System.out.println("\n\t1.DOCTOR - 1 : Dr. NEETA KHONDALLA");
+										System.out.println("\t2.DOCTOR - 2 : Dr. SAKSHI WANKHEDE");
+										do {
+											System.out.print("\nENTER YOUR CHOICE : ");
+											int ch3=input.nextInt();
+											System.out.println("\n\t1.SLOT 1 APPOINTMENTS");
+											System.out.println("\n\t2.SLOT 2 APPOINTMENTS");
+											System.out.println("\n\t3.SLOT 1 AND 2 APPOINTMENTS");
+											System.out.println("\nENTER YOUR CHOICE : ");
+											int ch4=input.nextInt();
+											switch(ch3)
+											{
+											case 1:
+												switch(ch4)
+												{
+												case 1:
+													obj5.display_q1();
+													break;
+												case 2:
+													obj5.display_q2();
+													break;
+												case 3:
+													obj5.display_q1q2();
+													break;
+												default:
+													System.out.println("\nINVALID CHOICE !! ");
+												}
+												break;
+											case 2:
+												switch(ch4)
+												{
+												case 1:
+													obj5.display_q3();
+													break;
+												case 2:
+													obj5.display_q4();
+													break;
+												case 3:
+													obj5.display_q3q4();
+													break;
+												default:
+													System.out.println("\nINVALID CHOICE !!");
+												}
+											default:
+												System.out.println("\nINVALID CHOICE !!");
+											}
+											System.out.println("\nDo You Want To See More Appointments?");
+											System.out.println("Press : ");
+											System.out.println("\t1 to CONTINUE");
+											System.out.println("\t0 to EXIT");
+											no5=input.nextInt();
+											if(no5 == 0) {
+												System.out.println("\nTHANK FOR VISITING");
+											}
+											
+										}while(no5==1);
+									default:
+										System.out.println("INVALID CHOICE !!");
+									}
+									System.out.println("Do You Want To Continue?");
+									System.out.println("Press : ");
+									System.out.println("\t1 to CONTINUE");
+									System.out.println("\t0 to EXIT");
+									no4=input.nextInt();
+									if(no4 == 0) {
+										System.out.println("\nTHANK FOR VISITING");
+									}
+								}while(no4==1);
+								break;
+							case 2:
+								System.out.println("\n"); // Department 2 : DERMATOLOGIST
+								System.out.println("=============================================================================");
+								System.out.println("=============================================================================");
+								System.out.println("\n\t\t\t\tAPPOINTMENTS ");
+								System.out.println("\n\t\t*************** MENU ***************");
+								System.out.println("\n\t\t\t 1.INSERT OLD PATIENT RECORD");
+								System.out.println("\n\t\t\t 2.DISPLAY DETAILS OF ALL PATIENTS");
+								System.out.println("\n\t\t\t 3.DISPLAY ALL APPOINTMENTS");
+								//System.out.println("\n=============================================================================");
+								//System.out.println("=============================================================================");
+								do {
+									System.out.print("\nENTER YOUR CHOICE : ");
+									int ch2=input.nextInt();
+									switch(ch2)
+									{
+									case 1:
+										obj6.old_patient_dept1();
+										break;
+									case 2:
+										obj6.display_record(obj6.root1);
+										break;
+									case 3:
+										System.out.println("\n\t1.DOCTOR - 1 : Dr. SAMIKSHA JADHAV");
+										System.out.println("\t2.DOCTOR - 2 : Dr. MANOHAR KHAIRNA");
+										do {
+											System.out.print("\nENTER YOUR CHOICE : ");
+											int ch3=input.nextInt();
+											System.out.println("\n\t1.SLOT 1 APPOINTMENTS");
+											System.out.println("\n\t2.SLOT 2 APPOINTMENTS");
+											System.out.println("\n\t3.SLOT 1 AND 2 APPOINTMENTS");
+											System.out.println("\nENTER YOUR CHOICE : ");
+											int ch4=input.nextInt();
+											switch(ch3)
+											{
+											case 1:
+												switch(ch4)
+												{
+												case 1:
+													obj6.display_q1();
+													break;
+												case 2:
+													obj6.display_q2();
+													break;
+												case 3:
+													obj6.display_q1q2();
+													break;
+												default:
+													System.out.println("\nINVALID CHOICE !!");
+												}
+												break;
+											case 2:
+												switch(ch4)
+												{
+												case 1:
+													obj6.display_q3();
+													break;
+												case 2:
+													obj6.display_q4();
+													break;
+												case 3:
+													obj6.display_q3q4();
+													break;
+												default:
+													System.out.println("\nINVALID CHOICE !!");
+												}
+											default:
+												System.out.println("\nINVALID CHOICE !!");
+											}
+											System.out.println("\nDo You Want To See More Appointments?");
+											System.out.println("Press : ");
+											System.out.println("\t1 to CONTINUE");
+											System.out.println("\t0 to EXIT");
+											no5=input.nextInt();
+											if(no5 == 0) {
+												System.out.println("\nTHANK FOR VISITING");
+											}
+										}while(no5==1);
+									default:
+										System.out.println("\nINVALID CHOICE !!");
+									}
+									System.out.println("\nDo You Want To Continue?");
+									System.out.println("Press : ");
+									System.out.println("\t1 to CONTINUE");
+									System.out.println("\t0 to EXIT");
+									no4=input.nextInt();
+									if(no4 == 0) {
+										System.out.println("\nTHANK FOR VISITING");
+									}
+								}while(no4==1);
+								break;
+							case 3:
+								System.out.println("\n"); // Department 3 : PSYCHIATRIST
+								System.out.println("=============================================================================");
+								System.out.println("=============================================================================");
+								System.out.println("\n\t\t\t\tAPPOINTMENTS ");
+								System.out.println("\n\t\t*************** MENU ***************");
+								System.out.println("\n\t\t\t 1.INSERT OLD PATIENT RECORD");
+								System.out.println("\n\t\t\t 2.DISPLAY ALL PATIENTS DETAILS");
+								System.out.println("\n\t\t\t 3.DISPLAY ALL APPOINTMENTS");
+								//System.out.println("\n=============================================================================");
+								//System.out.println("=============================================================================");
+								System.out.println("\n\t1.DOCTOR - 1 : Dr. GAUTAM KULKARNI");
+								do {
+									System.out.print("\nENTER YOUR CHOICE : ");
+									int ch2=input.nextInt();
+									switch(ch2)
+									{
+									case 1:
+										obj7.old_patient_dept1();
+										break;
+									case 2:
+										obj7.display_record(obj7.root1);
+										break;
+									case 3:
+										System.out.println("\n\t1.SLOT 1 APPOINTMENTS");
+										System.out.println("\n\t2.SLOT 2 APPOINTMENTS");
+										System.out.println("\n\t3.SLOT 1 AND 2 APPOINTMENTS");
+										do {
+											System.out.println("\nENTER YOUR CHOICE : ");
+											int ch3=input.nextInt();
+											switch(ch3)
+											{
+											case 1:
+												obj7.display_q1();
+												break;
+											case 2:
+												obj7.display_q2();
+												break;
+											case 3:
+												obj7.display_q1q2();
+												break;
+											default:
+												System.out.println("\nINVALID CHOICE !!");
+											}
+											System.out.println("\nDo You Want To See More Appointments?");
+											System.out.println("Press : ");
+											System.out.println("\t1 to CONTINUE");
+											System.out.println("\t0 to EXIT");
+											no5=input.nextInt();
+											if(no5 == 0) {
+												System.out.println("\nTHANK FOR VISITING");
+											}
+										}while(no5==1);		
+										break;
+									default :
+										System.out.println("\n");
+										System.out.println("=============================================================================");
+										System.out.println("=============================================================================");
+										System.out.println("\n\t\t\t\tENTER VALID OPTION......");
+										System.out.println("\t\t\t TRY AGAIN !!!!!");
+										System.out.println("\n=============================================================================");
+										System.out.println("=============================================================================");
+										break;
+									}
+									System.out.println();
+									System.out.println("\nDo you want to visit another page ???");
+									System.out.println("Press : ");
+									System.out.println("\t1 to CONTINUE");
+									System.out.println("\t0 to EXIT");
+									ans = sc.nextInt();
+									if(ans == 0) {
+										System.out.println("\nTHANK FOR VISITING");
+									}
+								}while(ans == 1);
+							}
+							System.out.println();
+							System.out.println("\nDo you want to visit another page ???");
+							System.out.println("Press : ");
+							System.out.println("\t1 to CONTINUE");
+							System.out.println("\t0 to EXIT");
+							ans = sc.nextInt();
+							if(ans == 0) {
+								System.out.println("\nTHANK FOR VISITING");
+							}
+						}while(ans == 1);
+						break;
+					default:
+						System.out.println("\nINVALID CHOOCE !!");
+					}
+					System.out.println();
+					System.out.println("\nDo you want to continue as ADMIN ???");
+					System.out.println("Press : ");
+					System.out.println("\t1 to CONTINUE");
+					System.out.println("\t0 to EXIT");
+					ans = sc.nextInt();
+					if(ans == 0) {
+						System.out.println("\nTHANK FOR VISITING");
+					}
+				}while(ans == 1);
+				break;
+			
+			case 2:
+				System.out.println("\n\t\t*************** MENU ***************");
+				System.out.println("\n\t\t\t 1.HOME");
+				System.out.println("\n\t\t\t 2.ABOUT HOSPITAL");
+				System.out.println("\n\t\t\t 3.DOCTORS");
+				System.out.println("\n\t\t\t 4.SERVICES");
+				System.out.println("\n\t\t\t 5.BOOK APPOINTMENT");
+				System.out.println("\n\t\t\t 6.REVIEWS");
+				System.out.println("\n=============================================================================");
+				System.out.println("=============================================================================");
+				do {
+					System.out.print("\nENTER YOUR CHOICE : ");
+					choice = input.nextInt();
+					int no;
+					switch(choice) {
+					case 1:
+						System.out.println("\n");
+						System.out.println("=============================================================================");
+						System.out.println("=============================================================================");
+						System.out.println("\n\t\t\t\t   WELCOME to");
+						System.out.println("\t\t\tSWAYAM MULTI - SPECIALITY Hospital");
+						System.out.println("\n\n\t\t\tMaking Health Care Better Together");
+						System.out.println("\n\tFrom preventive Care and Checkups, to immuunizations and exams, ");
+						System.out.println("\tour primary care physicians and provides work to keep you and ");
+						System.out.println("\tyour whole family healthy and strong each and every day.");
+						System.out.println("\n=============================================================================");
+						System.out.println("=============================================================================");
+						break;
+					case 2:
+						System.out.println("\n");
+						System.out.println("=============================================================================");
+						System.out.println("=============================================================================");
+						System.out.println("\n\t\t\t\tABOUT US");
+						About_us.main(args);
+						System.out.println("\n=============================================================================");
+						System.out.println("=============================================================================");
+						break;
+					case 3:
+						System.out.println("\n");
+						System.out.println("=============================================================================");
+						System.out.println("=============================================================================");
+						System.out.println("\n\t\t\t\tDOCTORS ");
+						//obj1.search();
+						obj1.display();
+						System.out.println("\n=============================================================================");
+						System.out.println("=============================================================================");
+						break;
+					case 4:
+						System.out.println("\n");
+						System.out.println("=============================================================================");
+						System.out.println("=============================================================================");
+						System.out.println("\n\t\t\t\tSERVICES ");
+						System.out.println("\n\t\t*************** MENU ***************");
+						System.out.println("\n\t\t\t 1.VIEW EVENTS");
+						System.out.println("\n\t\t\t 2.SEARCH FOR AN EVENT");
+						System.out.println("\n\t\t\t 3.REGISTER FOR FREE CHECKUP");
+						System.out.println("\n\t\t\t 4.BUY MEDICINES");
+						System.out.println("\n=============================================================================");
+						System.out.println("=============================================================================");
+						System.out.print("Enter your choice: ");
+						int chh=input.nextInt();
+						switch(chh)
+						{
+						case 1:
+							obj2.display();
+							break;
+						case 2:
+							obj2.search();
+							break;
+						case 3:
+							int no1=0;
+							InputStreamReader i=new InputStreamReader(System.in);
+							BufferedReader br=new BufferedReader(i);
+							System.out.print("\nENTER REGISTRATION FOR  : ");
+							String event_name=br.readLine();
+							if(event_name.equals("FREE CHECKUP"))
+							{
+
+								System.out.print("ENTER REGISTRATION DATE : ");
+								String date=br.readLine();
+								//Creater the DateTimeFormatter matching the input string format
+								DateTimeFormatter format = DateTimeFormatter.ofPattern("d MMMM, yyyy");
+								//Using parse method to convert the string to LocalDate object
+								LocalDate dt1 = LocalDate.parse(date,format);
+								//System.out.println(dt1); OUTPUT=2021-08-30
+								LocalDate dt2 = LocalDate.parse("2023-05-01");
+								//System.out.println(dt2); OUTPUT=2021-08-30
+								if(dt1.equals(dt2))
+								{
+									System.out.println("\n\t1.Register\n\t2.Search\n\t3.Delete");
+									do {
+										System.out.print("\nENTER YOUR CHOICE : ");
+										int ch1=input.nextInt();
+										switch(ch1)
+										{
+										case 1:
+											obj4.insert();
+											break;
+										case 2:
+											obj4.search();
+											break;
+										case 3:
+											obj4.delete();
+											break;
+										default:
+											System.out.println("\n");
+											System.out.println("=============================================================================");
+											System.out.println("=============================================================================");
+											System.out.println("\n\t\t\t\tENTER VALID OPTION......");
+											System.out.println("\t\t\t TRY AGAIN !!!!!");
+											System.out.println("\n=============================================================================");
+											System.out.println("=============================================================================");
+										}
+										System.out.print("Do you want do continue?" );
+										System.out.println("Press : ");
+										System.out.println("\t1 to CONTINUE");
+										System.out.println("\t0 to EXIT");
+										no1=input.nextInt();
+										if(no1 == 0) {
+											System.out.println("\nTHANK FOR VISITING");
+										}
+										
+									}while(no1==1);
+									System.out.println("\n=============================================================================");
+									System.out.println("=============================================================================");
+								}
+								else
+								{
+									System.out.println("\n");
+									System.out.println("=============================================================================");
+									System.out.println("=============================================================================");
+									System.out.println("\n\t\t\t\tENTER VALID OPTION......");
+									System.out.println("\t\t\t TRY AGAIN !!!!!");
+									System.out.println("\n=============================================================================");
+									System.out.println("=============================================================================");
+								}
+							}
+							else
+							{
+								System.out.println("\n");
+								System.out.println("=============================================================================");
+								System.out.println("=============================================================================");
+								System.out.println("\n\t\t\t\tENTER VALID OPTION......");
+								System.out.println("\t\t\t TRY AGAIN !!!!!");
+								System.out.println("\n=============================================================================");
+								System.out.println("=============================================================================");
+							}
+							break;
+						case 4:
+							obj8.order();
+							break;
+						}
+						break;
+					case 5:
+						int no1=0;
+						System.out.println("\n\t\t******* Departments *******\n\t\t1.DEPARTMENT - 1 : PEDITRICIAN \n\t\t2.DEPARTMENT - 2 : DERMATOLOGIST \n\t\t3.DEPARTMENT - 3 : PSYCHIATRIST");
+						do {
+							
+							System.out.print("ENTER YOUR DEPARTMENT : ");
+							int ch1=input.nextInt()	;
+							switch(ch1)//FOR DEPARTMENT
+							{
+							case 1://DEPARTMENT 1
+								System.out.println("\n\t**** DEPARTMENT - 1 : PEDITRICIAN ***** ");
+								System.out.println("\n\t\t1.BOOK APPOINTMENT \n\t\t2.DELETE APPOINTMENT\n\t\t3.UPDATE PATIENT DETAILS");
+								System.out.print("ENTER YOUR CHOICE : ");
+								int ch2=input.nextInt();
+								switch(ch2)//YOUR CHOICE
+								{
+								case 1://BOOK APPOINTMENT
+									System.out.println("\n\tBOOK APPOINTMENT : ");
+									obj5.book_app_dept1();
+									break;
+								case 2://DELETE APPOINTMENT
+									System.out.println("\n\tDELETE APPOINTMENT : ");
+									System.out.println("\n\t\t1.DOCTOR - 1 : Dr. VARUN KUMAR \n\t\t2.DOCTOR - 2 : Dr. NEETA KHOND");
+									System.out.print("ENTER YOUR DOCTOR : ");
+									int ch3=input.nextInt();
+									System.out.println("\n\tSLOT TAKEN : ");
+									System.out.println("\n\t\t1.9 am - 1 pm\n\t\t2.4 pm - 8 pm");
+									System.out.print("ENTER YOUR SLOT : ");
+									int ch4=input.nextInt();
+									switch(ch3)//FOR DOCTOR
+									{
+									case 1:
+										switch(ch4)//FOR SLOT
+										{
+										case 1:
+											obj5.delete_q1();
+											break;
+										case 2:
+											obj5.delete_q2();
+											break;
+										default:
+											System.out.println("INVALID CHOICE !!");
+										}
+										break;
+									case 2:
+										switch(ch4)
+										{
+										case 1:
+											obj5.delete_q3();
+											break;
+										case 2:
+											obj5.delete_q4();
+											break;
+										default:
+											System.out.println("INVALID CHOICE !!");
+										}
+										break;
+									default:
+										System.out.println("INVALID CHOICE !!");
+									}
+									break;
+								case 3:
+									obj5.update_tree();
+									break;
+								default:
+									System.out.println("INVALID CHOICE!!");
+								}
+								break;
+							case 2:
+								System.out.println("\n\t**** DEPARTMENT - 2 : DERMATOLOGIST ***** ");
+								System.out.println("\n\t\t1.BOOK APPOINTMENT \n\t\t2.DELETE APPOINTMENT\n\t\t3.UPDATE PATIENT DETAILS");
+								System.out.print("ENTER YOUR CHOICE : ");
+								int ch5=input.nextInt();
+								switch(ch5)
+								{
+								case 1:
+									System.out.println("\n\tBOOK APPOINTMENT : ");
+									obj6.book_app_dept1();
+									break;
+								case 2:
+									System.out.println("\n\tDELETE APPOINTMENT : ");
+									System.out.println("\n\t\t1.DOCTOR - 1 : Dr.MOHIT SHAH \n\t\t2.DOCTOR - 2 : NIKITA PATEL");
+		
+									System.out.print("ENTER YOUR DOCTOR : ");
+									int ch6=input.nextInt();
+									System.out.println("\n\tSLOT TAKEN : ");
+									System.out.println("\n\t\t1.9 am - 1 pm\n\t\t2.4 pm - 8 pm");
+								
+									System.out.print("ENTER YOUR SLOT : ");
+									int ch7=input.nextInt();
+									switch(ch6)
+									{
+									case 1:
+										switch(ch7)
+										{
+										case 1:
+											obj6.delete_q1();
+											break;
+										case 2:
+											obj6.delete_q2();
+											break;
+										default:
+											System.out.println("INVALID CHOICE !!");
+										}
+										break;
+									case 2:
+										switch(ch7)
+										{
+										case 1:
+											obj6.delete_q3();
+											break;
+										case 2:
+											obj6.delete_q4();
+											break;
+										default:
+											System.out.println("INVALID CHOICE !!");
+										}
+										break;
+									default:
+										System.out.println("INVALID CHOICE !!");
+									}
+									break;
+								case 3:
+									obj6.update_tree();
+									break;
+								default:
+									System.out.println("INVALID CHOICE !!");
+								}
+								break;
+							case 3:
+								int no2=0;
+								System.out.println("\n\t**** DEPARTMENT - 3 : PSYCHIATRIST ***** ");
+								System.out.println("\n\t\t1.BOOK APPOINTMENT \n\t\t2.DELETE APPOINTMENT\n\t\t3.UPDATE PATIENT DETAILS");
+								System.out.print("ENTER YOUR CHOICE : ");
+								int ch8=input.nextInt();
+								switch(ch8)
+								{
+								case 1:
+									System.out.println("\n\tBOOK APPOINTMENT : ");
+									obj7.book_app_dept1();
+									break;
+								case 2:
+									System.out.println("\n\tDELETE APPOINTMENT : ");
+									System.out.println("\n\t\t1.DOCTOR - 1 : GAUTAM KULKARNI");
+									System.out.println("\n\tSLOT TAKEN : ");
+									System.out.println("\n\t\t1.9 am - 1 pm\n\t\t2.4 pm - 8 pm");
+									System.out.print("ENTER YOUR SLOT : ");
+									int ch9=input.nextInt();
+									switch(ch9)
+									{
+									case 1:
+										obj7.delete_q1();
+										break;
+									case 2:
+										obj7.delete_q2();
+										break;
+									default:
+										System.out.println("INVALID CHOICE !!");
+									}
+									break;
+								case 3:
+									obj7.update_tree();
+									break;
+								default:
+									System.out.println("INVALID CHOICE !!");
+								}
+								break;
+							default:
+								System.out.println("INVALID CHOICE !!");
+							}
+							System.out.print("Do you want to Book more Appointments? ");
+							System.out.println("PRESS : ");
+							System.out.println("1 : YES ");
+							System.out.println("0 : NO");
+							no1=input.nextInt();
+						}while(no1==1);
+						System.out.println("Do you want to Buy Medicines?");
+						System.out.println("PRESS : ");
+						System.out.println("1 : YES ");
+						System.out.println("0 : NO");
+						int no2=input.nextInt();
+						if(no2==1)
+							obj8.order();
+						else
+							System.out.println("THANK YOU !!");
+						System.out.println("Do You Want To Give Reviews To Our Hospital?");
+						System.out.println("PRESS : ");
+						System.out.println("1 : YES ");
+						System.out.println("0 : NO");
+						int no3=input.nextInt();
+						if(no3==1)
+						{
+							obj3.accept();
+							System.out.println("THANK YOU FOR GIVING YOUR REVIEWS !!");
+						}
+						else
+							System.out.println("THANK YOU!!");
+						break;
+					case 6:
+						System.out.println("\n");
+						System.out.println("=============================================================================");
+						System.out.println("=============================================================================");
+						System.out.println("\n\t\t\t\tREVIEWS ");
+						System.out.println("\n\t\t*************** MENU ***************");
+						System.out.println("\n\t\t\t1.ADD REVIEWS\n\t\t\t2.DISPLAY REVIEWS");
+						do {
+							System.out.print("ENTER YOUR CHOICE : ");
+							int ch1=input.nextInt();
+							switch(ch1) {
+							case 1:
+								obj3.accept();
+								break;
+							case 2:
+								obj3.display();
+								break;
+							}
+							System.out.print("Do you want do continue? ");
+							System.out.println("Press : ");
+							System.out.println("\t1 to CONTINUE");
+							System.out.println("\t0 to EXIT");
+							no=input.nextInt();
+							if(no == 0) {
+								System.out.println("\nTHANK FOR VISITING");
+							}
+						}while(no==1);
+						System.out.println("\n=============================================================================");
+						System.out.println("=============================================================================");
+						break;
+					default :
+						System.out.println("\n");
+						System.out.println("=============================================================================");
+						System.out.println("=============================================================================");
+						System.out.println("\n\t\t\t\tENTER VALID OPTION......");
+						System.out.println("\t\t\t TRY AGAIN !!!!!");
+						System.out.println("\n=============================================================================");
+						System.out.println("=============================================================================");
+						break;
+					}
+					System.out.println();
+					System.out.println("Do you want to continue as USER ???");
+					System.out.println("Press : ");
+					System.out.println("\t1 to CONTINUE");
+					System.out.println("\t0 to EXIT");
+					ans = input.nextInt();
+					if(ans == 0) {
+						System.out.println("\nTHANK FOR VISITING");
+					}
+				}while(ans == 1);
+				break;
+			default:
+				System.out.println("INVALID CHOICE !!");
+			}
+			System.out.println("Do You Want To Continue?");
+			System.out.println("Press : ");
+			System.out.println("\t1 to CONTINUE");
+			System.out.println("\t0 to EXIT");
+			answer=input.nextInt();
+			if(answer == 0) {
+				System.out.println("\nTHANK FOR VISITING");
+			}		
+		}while(answer==1);
+	}
+}
+
diff --git a/Hospital_Management_Report..pdf b/Hospital_Management_Report..pdf
new file mode 100644
index 0000000..a682de7
Binary files /dev/null and b/Hospital_Management_Report..pdf differ
diff --git a/Hospital_Management_Report.docx b/Hospital_Management_Report.docx
new file mode 100644
index 0000000..b424261
Binary files /dev/null and b/Hospital_Management_Report.docx differ
diff --git a/Medicine.java b/Medicine.java
new file mode 100644
index 0000000..9ec8f19
--- /dev/null
+++ b/Medicine.java
@@ -0,0 +1,690 @@
+package services;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.Scanner;
+
+import node.Node5;
+import node.bill;
+
+public class Medicine {
+
+	InputStreamReader i=new InputStreamReader(System.in);
+	BufferedReader br=new BufferedReader(i);
+
+	int table_size;
+	Node5 hash_table[];
+	int key1;
+	int key2;
+	int key3;
+	int count;
+
+	public Medicine()
+	{
+		table_size=11;
+		hash_table=new Node5[table_size];
+		count=0;
+	}
+	public void insert() throws IOException
+	{
+		System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		System.out.print("ENTER NO OF MEDICINES PRESENT : ");
+		int no=Integer.parseInt(br.readLine());
+		System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+
+		count=count+no;
+
+		if(no<0||count>table_size) {
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			System.out.println("INVALID NO...");
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		}
+		else
+		{
+			//System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			System.out.println("\n\t******* MEDICINE DETAILS ******** ");
+			for(int i=0;i<no;i++)
+			{
+				System.out.print("\nENTER CODE : ");
+				int med_code=Integer.parseInt(br.readLine());
+
+				while(med_code<=0)
+				{
+					System.out.println("\nENTERED INVALID CODE !!");
+					System.out.print("\nRE - ENETER THE MEDICINE CODE : ");
+					med_code=Integer.parseInt(br.readLine());
+				}
+				System.out.print("\nENTER NAME : ");
+				String name=br.readLine();
+
+				System.out.print("\nENTER COST : ");
+				float cost=Float.parseFloat(br.readLine());
+				while(cost<=0)
+				{
+					System.out.println("\nENTERED INVALID COST!!");
+					System.out.print("\nRE - ENETER THE MEDICINE COST : ");
+					cost=Float.parseFloat(br.readLine());
+				}
+
+				System.out.print("\nENTER QUANTITY : ");
+				int count1=Integer.parseInt(br.readLine());
+
+				while(count1<=0)
+				{
+					System.out.println("\nENTERED INVALID QUANTITY!!");
+					System.out.print("\nRE - ENETER THE MEDICINE QUANTITY : ");
+					count1=Integer.parseInt(br.readLine());
+				}
+
+				Node5 new_node=new Node5(med_code,name,cost,count1);
+
+				key1=med_code%table_size;
+
+				if(hash_table[key1]==null)
+					hash_table[key1]=new_node;
+
+				else
+				{
+					//COLLISING HANDLING THROUGH DOUBLE HASHING PROBING
+					int j=1;
+
+					key2=8-(med_code%8);
+					key3=(key1+j*key2)%table_size;
+
+					if(hash_table[key3]==null)
+						hash_table[key3]=new_node;
+
+					else
+					{
+						while(hash_table[key3]!=null)
+						{
+							j++;
+							key3=(key1+j*key2)%table_size;
+						}
+						hash_table[key3]=new_node;
+					}
+				}
+			    System.out.println("\n-----------------------------------------------------------------------------\n");
+			}
+		}
+	}
+
+	public void display()
+	{
+		System.out.println("\nMEDICINE CODE \tMEDICINE NAME \tMEDICINE COST \tQUANTITY\n");
+		for(int i=0;i<table_size;i++)
+		{
+			if(hash_table[i]==null||hash_table[i].count==0)
+				continue;
+
+			else
+				
+				System.out.println(hash_table[i].med_code+"\t\t"+hash_table[i].med_name+"\t\t"+hash_table[i].med_cost+"\t\t"+hash_table[i].count);
+				System.out.println();
+		}		
+	}
+
+	public void search() throws IOException
+	{
+		System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		System.out.print("\nENTER MEDICINE CODE : ");
+		int code=Integer.parseInt(br.readLine());
+		int flag=0;
+
+		key1=code%table_size;
+
+		if(hash_table[key1]==null) {
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			System.out.println("MEDICINE DATA NOT FILLED YET !!");
+			System.out.println("TRY AFTER SOME TIME !!!");
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		}
+		else if(hash_table[key1].med_code==code)
+		{
+			flag=1;
+			System.out.println("\n\t***** Medicine Found ****** ");
+			System.out.println("\n\tMedicine Code: "+hash_table[key1].med_code);
+			System.out.println("\n\tMedicine Name: "+hash_table[key1].med_name);
+			System.out.println("\n\tMedicine Cost: "+hash_table[key1].med_cost);
+			System.out.println("\n\tMedicine Quantity: "+hash_table[key1].count);
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		}
+
+		else
+		{
+			int j=1;
+
+			key2=8-(code%8);
+			key3=(key1+j*key2)%table_size;
+
+			while(hash_table[key3]!=null)
+			{
+				key3=(key1+j*key2)%table_size;
+
+				if(hash_table[key3]==null) {
+					System.out.println("\nMedicine Not Found!!");
+					System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				}
+				else
+				{
+					if(hash_table[key3].med_code==code)
+					{
+						flag=1;
+						System.out.println("\n\t***** MEDICINE FOUND *****");
+						System.out.println("\n\t\tMEDICINE CODE : "+hash_table[key3].med_code);
+						System.out.println("\n\t\tMEDICINE NAME : "+hash_table[key3].med_name);
+						System.out.println("\n\t\tMEDICINE COST : "+hash_table[key3].med_cost);
+						System.out.println("\n\t\tMEDICINE QUANTITY : "+hash_table[key3].count);
+						System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+						break;
+					}
+					else
+						j++;
+				}
+			}
+		}
+
+		if(flag==0) {
+			System.out.println("\nMEDICINE NOT FOUND !!");
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		}
+	}
+
+	public void delete() throws NumberFormatException, IOException
+	{
+		System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		System.out.print("\nENTER MEDICINE CODE : ");
+		int code=Integer.parseInt(br.readLine());
+		int flag=0;
+
+		key1=code%table_size;
+
+		if(hash_table[key1]==null) {
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			System.out.println("\nMEDICINE NOT FOUND !!");
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		}
+		else if(hash_table[key1].med_code==code)
+		{
+			flag=1;
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			System.out.println("\nMEDICINE CODE FOUND !!");
+			hash_table[key1].med_code=0;
+			hash_table[key1].med_name=null;
+			hash_table[key1].med_cost=0f;
+			hash_table[key1].count=0;
+
+			System.out.println("\nSUCCESSFULLY DELETED MEDICINE RECORD !!");
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			count--;
+		}
+
+		else
+		{
+			int j=1;
+
+			key2=8-(code%8);
+			key3=(key1+j*key2)%table_size;
+
+			while(hash_table[key3]!=null)
+			{
+				if(hash_table[key3]==null) {
+					System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+					System.out.println("MEDICINE NOT FOUND !!");
+					System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				}
+				else
+				{
+					key3=(key1+j*key2)%table_size;
+					if(hash_table[key3].med_code==code)
+					{
+						flag=1;
+						System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+						System.out.println("MEDICINE FOUND !!");
+						hash_table[key3].med_code=0;
+						hash_table[key3].med_name=null;
+						hash_table[key3].med_cost=0f;
+						hash_table[key3].count=0;
+
+						System.out.println("\nSUCCESSFULLY DELETED MEDICINE RECORD !!");
+						System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+						count--;
+						break;
+					}
+					else
+						j++;
+				}
+			}
+		}
+
+		if(flag==0) {
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			System.out.println("MEDICINE NOT FOUND !!");
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		}
+	}
+
+	public void update() throws IOException
+	{
+		System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		System.out.print("\nENTER MEDICINE CODE : ");
+		int code=Integer.parseInt(br.readLine());
+		int flag=0;
+
+		key1=code%table_size;
+
+		if(hash_table[key1]==null) {
+			
+			System.out.println("MEDICINE NOT FOUND !!");
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		}
+
+		else if(hash_table[key1].med_code==code)
+		{
+			flag=1;
+		}
+
+		else
+		{
+			int j=1;
+
+			key2=8-(code%8);
+			key3=(key1+j*key2)%table_size;
+
+			while(hash_table[key3]!=null)
+			{
+				key3=(key1+j*key2)%table_size;
+
+				if(hash_table[key3]==null) {
+					System.out.println("MEDICINE NOT FOUND !!");
+					System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				}
+				else
+				{
+					if(hash_table[key3].med_code==code)
+					{
+						flag=2;						
+						break;
+					}
+					else
+						j++;
+				}
+			}
+		}
+
+		if(flag==0) {
+			System.out.println("\nMEDICINE NOT FOUND !!");
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		}
+		else
+		{
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			System.out.println("\n\t******** UPDATE MENU ********");
+			System.out.println("\n\t\t1.Medicine Name\n\t\t2.Medicine Cost\n\t\t3.Quantity");
+			System.out.print("\nENTER YOUR CHOICE : ");
+			int ch=Integer.parseInt(br.readLine());
+
+			switch(ch)
+			{
+			case 1:
+				System.out.print("\nENTER MEDICINE NAME : ");
+				String name=br.readLine();
+
+				if(flag==1)
+					hash_table[key1].med_name=name;
+
+				else
+					hash_table[key3].med_name=name;
+
+				System.out.println("\nUPDATED SUCCESSFULLY !!");
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				break;
+
+			case 2:
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				System.out.print("\nENTER MEDICINE COST : ");
+				float cost=Integer.parseInt(br.readLine());
+
+				while(cost<=0)
+				{
+					System.out.println("\nENTERED INVALID COST !!");
+					System.out.print("\nRE - ENETER THE MEDICINE COST : ");
+					System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+					cost=Integer.parseInt(br.readLine());
+				}
+
+				if(flag==1)
+					hash_table[key1].med_cost=cost;
+
+				else
+					hash_table[key3].med_cost=cost;
+
+				System.out.println("\nUPDATED SUCCESSFULLY !!");
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				break;
+
+			case 3:
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				System.out.print("\nENTER MEDICINE QUANTITY : ");
+				int q=Integer.parseInt(br.readLine());
+
+				while(q<=0)
+				{
+					System.out.println("\nENTERED INVALID QUANTITY !!");
+					System.out.print("\nRE - ENETER THE MEDICINE QUANTITY : ");
+					q=Integer.parseInt(br.readLine());
+					System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				}
+
+				if(flag==1)
+					hash_table[key1].count=q;
+
+				else
+					hash_table[key3].count=q;
+
+				System.out.println("\nUPDATED SUCCESSFULLY !!");
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				break;
+
+			default:
+				System.out.println("\nINVALID CHOICE !!");
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			}
+		}
+	}
+
+	public void order() throws IOException
+	{
+		float total_cost=0;
+		System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		System.out.println("\n\t***** CUSTOMER DETAILS ******");
+		System.out.print("\nENTER CUSTOMER NAME : ");
+		String c_name=br.readLine();
+
+		System.out.print("\nENTER CUTOMER MOBILE NUMBER : ");
+		String ph_no=br.readLine();
+
+		while(ph_no.length()!=10)
+		{
+			System.out.print("\nENTERED INVALID MOBILE NUMBER....");
+			System.out.print("\nENTER VALID MOBILE NUMBER : ");
+			ph_no=br.readLine();
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		}
+
+		System.out.print("\nENTER CUSTOMER ADDRESS : ");
+		String addr=br.readLine();
+
+		System.out.print("\nENTER NO OF MEDICINES TO BUY : ");
+		int no=Integer.parseInt(br.readLine());
+
+		while(no<=0)
+		{
+			System.out.println("\nENTERED INVALID MEDICINE NUMBER !!");
+			System.out.print("\nRE - ENETER THE MEDICINE QUANTITY :");
+			no=Integer.parseInt(br.readLine());
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		}
+
+		bill arr[]=new bill[no];
+
+		for(int i=0;i<no;i++)
+		{
+			arr[i]=new bill();
+			arr[i].flag=0;
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			System.out.print("\nENTER MEDICINE CODE :  ");
+			arr[i].med_code=Integer.parseInt(br.readLine());
+
+			key1=arr[i].med_code%table_size;
+
+			if(hash_table[key1]==null)
+			{
+				System.out.println("\nMEDICINE NOT AVAILABLE !!");
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				arr[i].flag=2;
+			}
+
+			else if(hash_table[key1].med_code==arr[i].med_code)
+			{
+				arr[i].flag=1;
+				System.out.print("\nENTER QUANTITY : ");
+				arr[i].quantity=Integer.parseInt(br.readLine());
+
+				while(arr[i].quantity<=0)
+				{
+					System.out.println("\nENETERED INVALID QUANTIYT !!");
+					System.out.print("\nRE - ENTER MEDICINE QUATITY : ");
+					arr[i].quantity=Integer.parseInt(br.readLine());
+					System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				}
+
+				if(hash_table[key1].count==0)
+					arr[i].flag=2;
+
+				else if(hash_table[key1].count>=arr[i].quantity)
+				{
+					arr[i].rate=hash_table[key1].med_cost;
+					arr[i].med_name=hash_table[key1].med_name;
+
+					arr[i].amount=arr[i].rate*arr[i].quantity;
+					hash_table[key1].count=hash_table[key1].count-arr[i].quantity;
+
+					total_cost=total_cost+arr[i].amount;
+				}
+
+				else if(hash_table[key1].count<arr[i].quantity&&hash_table[key1].count>0)
+				{
+					arr[i].flag=0;
+					System.out.println("\nQUANTITY LEFT : "+hash_table[key1].count);
+					System.out.println("DO YOU WANT OT BUY QUANTITY OF : "+hash_table[key1].count);
+					System.out.println("\nPRESS :  ");
+					System.out.println("\n\t1 : YES");
+					System.out.println("\n\t0 : NO");
+					int ch=Integer.parseInt(br.readLine());
+					System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+
+					if(ch==1)
+					{
+						arr[i].quantity=hash_table[key1].count;
+						arr[i].rate=hash_table[key1].med_cost;
+						arr[i].med_name=hash_table[key1].med_name;
+
+						arr[i].amount=arr[i].rate*arr[i].quantity;
+						hash_table[key1].count=hash_table[key1].count-arr[i].quantity;
+
+						total_cost=total_cost+arr[i].amount;
+					}
+					else
+						arr[i].flag=2;
+				}
+
+				else
+				{
+					System.out.println("\nNOT AVAILABLE !!");
+					System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+					arr[i].flag=2;					
+				}
+
+			}
+
+			else
+			{
+				int j=1;
+
+				key2=8-(arr[i].med_code%8);
+				key3=(key1+j*key2)%table_size;
+
+				if(hash_table[key3]==null)
+				{
+					System.out.println("\nNOT AVAILABLE !!");
+					System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+					arr[i].flag=2;
+				}
+				else
+				{
+					while(hash_table[key3]!=null)
+					{
+						key3=(key1+j*key2)%table_size;
+
+						if(hash_table[key3]==null)
+						{
+							System.out.println("\nNOT AVAILABLE !!");
+							System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+							arr[i].flag=2;
+						}
+						else if(hash_table[key3].med_code==arr[i].med_code)
+						{
+							arr[i].flag=1;
+							System.out.print("\nENTER QUANTITY : ");
+							arr[i].quantity=Integer.parseInt(br.readLine());
+
+							if(hash_table[key3].count==0)
+								arr[i].flag=2;
+
+							else if(hash_table[key3].count>=arr[i].quantity)
+							{
+								arr[i].rate=hash_table[key3].med_cost;
+								arr[i].med_name=hash_table[key3].med_name;
+
+								arr[i].amount=arr[i].rate*arr[i].quantity;
+								hash_table[key3].count=hash_table[key3].count-arr[i].quantity;
+
+								total_cost=total_cost+arr[i].amount;
+							}
+
+							else if(hash_table[key3].count<arr[i].quantity&&hash_table[key3].count>0)
+							{
+								arr[i].flag=0;
+								System.out.println("\nQUANTITY LEFT : "+hash_table[key3].count);
+								System.out.println("DO YOU WANT OT BUY QUANTITY OF :"+hash_table[key3].count);
+								System.out.println("\nPRESS :  ");
+								System.out.println("\n\t1 : YES");
+								System.out.println("\n\t0 : NO");
+								int ch=Integer.parseInt(br.readLine());
+
+								if(ch==1)
+								{
+									arr[i].quantity=hash_table[key3].count;
+									hash_table[key3].count=hash_table[key3].count-arr[i].quantity;
+
+									arr[i].rate=hash_table[key3].med_cost;
+									arr[i].med_name=hash_table[key3].med_name;
+
+									arr[i].amount=arr[i].rate*arr[i].quantity;
+
+									total_cost=total_cost+arr[i].amount;
+								}
+								else
+									arr[i].flag=2;
+							}
+
+							else
+							{
+								System.out.println("\nNOT AVAILABLE !!");
+								System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+								arr[i].flag=2;					
+							}
+							break;				
+						}
+						else
+						{
+							arr[i].flag=2;
+							j++;
+						}
+					}
+
+				}
+			}
+		}
+
+		System.out.println("\n\t***** MEDICAL STORE *****");
+		System.out.println("\n\tCUSTOMER NAME : "+c_name);
+		System.out.println("\tCUSTOMER ADDRESS : "+addr);
+
+		int flag=1;
+		int j=0;
+			System.out.println("\n-------------------------------------------------------------------------------\n");
+			
+		System.out.println("\n\tSR. NO.\tMEDICINE CODE \tMEDICINE NAME \tQUANTITY \tRATE      \tAMOUNT");
+		for(int i=0;i<no;i++)
+		{
+
+			if(arr[i].flag==2)
+			{
+				flag=0;
+				continue;	
+			}
+
+			else
+			{
+				if(arr[i].flag==0)
+					flag=0;
+
+				j++;
+				System.out.println("\n\t"+j+"\t"+arr[i].med_code+"\t\t"+arr[i].med_name+"\t\t"+arr[i].quantity+"\t\t"+arr[i].rate+"\t\t"+arr[i].amount);
+			}
+		}
+
+		System.out.println("\n\n\tTOTAL COST : \t\t\t\t\t\t\t\t"+total_cost);
+		System.out.println("\n-------------------------------------------------------------------------------\n");
+
+		if(flag==0){
+			System.out.println("\n\t***** RECOMMENDED MEDICAL SHOPS ***** ");
+			System.out.println("\n\t\t1.ADITYA MEDICAL");
+			System.out.println("\t\t2.MEDI PLUS");
+			System.out.println("\t\t3.AARSHIRWAD MEDICAL");
+			System.out.println("\t\t4.WELLNESS FOREVER");
+			System.out.println("\t\t5.AMIT MEDICAL");
+		}
+	}
+	public static void main(String[] args) throws IOException {
+		Medicine m = new Medicine();
+		Scanner sc = new Scanner(System.in);
+		int ch;
+		int ans;
+		
+		do {
+			System.out.print("enter your choice : ");
+			ch = sc.nextInt();
+			switch(ch) {
+			case 1:
+				m.insert();
+				break;
+			case 2:
+				m.display();
+				break;
+			case 3:
+				m.delete();
+				break;
+			case 4 :
+				m.search();
+				break;
+			case 5:
+				m.update();
+				break;
+			case 6: 
+				m.order();
+				break;
+			default :
+				System.out.println("invalid input");
+				break;
+				
+			
+			}
+			
+			System.out.println("do you want to continue ?");
+			System.out.println("press :");
+			System.out.println("1 : continue");
+			System.out.println("0 : eixt");
+			ans = sc.nextInt();
+			if(ans == 0) {
+				System.out.println("exit");
+			}
+		}while(ans == 1);
+		
+	}
+}
+
+
diff --git a/Node.java b/Node.java
new file mode 100644
index 0000000..a5d5e94
--- /dev/null
+++ b/Node.java
@@ -0,0 +1,18 @@
+package node;
+
+public class Node {
+	public Node next;
+	public Node prev;
+	public int event_no;
+	public String event_name;
+	public String event_date;
+	public String event_time;
+	public String event_details;
+	public Node(){
+		next = null;
+		prev = null;
+		event_date = "15-03-2023";
+		event_time = "9 - 12";
+		event_details = "xyz";
+	}
+}
diff --git a/Node1.java b/Node1.java
new file mode 100644
index 0000000..4c1b92e
--- /dev/null
+++ b/Node1.java
@@ -0,0 +1,19 @@
+package node;
+
+public class Node1 {
+
+	public String name;
+	public String quali;
+	public String depart;
+	public int exp;
+	public Node1 back;
+	public Node1 next;
+	
+	public Node1(){
+		name = "Meenal Jayal"; 
+		quali = "BDS"; 
+		depart = "Dentist";
+		exp = 0;
+	}
+}
+
diff --git a/Node2.java b/Node2.java
new file mode 100644
index 0000000..b52442d
--- /dev/null
+++ b/Node2.java
@@ -0,0 +1,22 @@
+package node;
+
+public class Node2 {
+	public Node2 left1;
+	public Node2 right1;
+	public int patient_id;
+	public String patient_name;
+	public int patient_age;
+	public String patient_gender;
+	public String patient_address;
+	public String patient_ph_no;
+	public Node2(int id,String name,int age,String gender,String addr,String ph_no){
+		patient_id = id;
+		patient_name = name;
+		patient_age = age;
+		patient_gender = gender;
+		patient_address = addr;
+		patient_ph_no = ph_no;
+		left1 = null;
+		right1 = null;
+	}
+}
diff --git a/Node3.java b/Node3.java
new file mode 100644
index 0000000..7047015
--- /dev/null
+++ b/Node3.java
@@ -0,0 +1,28 @@
+package node;
+
+public class Node3 {
+	public int sr_no;
+	public int patient_id;
+	public String patient_name;
+	public String slot;
+	public int patient_age;
+	public String patient_gender;
+	public String patient_ph_no;
+	public String symptoms;
+	public String prescription;
+	public Node3 next;
+	public Node3 prev;
+	public Node3(int no,int id,String n,String s,int age,String g,String ph_no,String pres,String sym){
+		sr_no = no;
+		patient_id = id;
+		patient_name = n;
+		slot = s;
+		patient_age = age;
+		patient_gender = g;
+		patient_ph_no = ph_no;
+		symptoms = sym;
+		prescription = pres;
+		next = null;
+		prev = null;
+	}
+}
diff --git a/Node4.java b/Node4.java
new file mode 100644
index 0000000..ec7a623
--- /dev/null
+++ b/Node4.java
@@ -0,0 +1,22 @@
+package node;
+
+public class Node4 {
+	public Node4 next;
+	public Node4 prev;
+	public int patient_id;
+	public String patient_name;
+	public int patient_age;
+	public String patient_gender;
+	public String patient_address;
+	public String patient_ph_no;
+	public Node4(int id,String name,int age,String gender,String addr,String ph_no){
+		patient_id = id;
+		patient_name = name;
+		patient_age = age;
+		patient_gender = gender;
+		patient_address = addr;
+		patient_ph_no = ph_no;
+		prev = null;
+		next = null;
+	}
+}
diff --git a/Node5.java b/Node5.java
new file mode 100644
index 0000000..5328d58
--- /dev/null
+++ b/Node5.java
@@ -0,0 +1,14 @@
+package node;
+
+public class Node5 {
+	public int med_code;
+	public String med_name;
+	public float med_cost;
+	public int count;
+	public Node5(int code,String name,float cost,int no){
+		med_code = code;
+		med_name = name;
+		med_cost = cost;
+		count = no;
+	}
+}
diff --git a/Person.java b/Person.java
new file mode 100644
index 0000000..deff520
--- /dev/null
+++ b/Person.java
@@ -0,0 +1,15 @@
+package node;
+
+public class Person {
+	
+	public String name;
+	public String content;
+	//public String rating;
+	public int rating;
+	public Person(){
+		name = "PRANOTI PATIL";
+		content = "GOOD HOSPLITALITY";
+		rating = 3;
+	}
+}
+
diff --git a/README.md b/README.md
index e6bc571..d48c507 100644
--- a/README.md
+++ b/README.md
@@ -14,3 +14,12 @@ While submitting, note that:
 Each folder should have the name of the team and inside a readme file with team member details, (name, year, branch) and their theme. The readme file should also contain the link to their presentation as well as the drive link where both the report documents would be stored. 
 
 Happy Coding :)
+Team number- 27
+Team Name- Team Hackslash
+Theme- Hospital Management System
+Team Members: 1) Vaishnavi Repe, SY Comp
+              2) Sakshi Shide, SY Comp
+              3) Srushti Jadhav, SY Comp
+              4) Taniya Nasir, SY Comp
+              
+Drive Link: https://drive.google.com/drive/folders/1MMrEHNgwA5_e60oWUdRfZhUPOmARjctq?usp=share_link              
diff --git a/Register.java b/Register.java
new file mode 100644
index 0000000..2813aa2
--- /dev/null
+++ b/Register.java
@@ -0,0 +1,79 @@
+package services;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+import java.util.Scanner;
+import node.Node4;
+
+public class Register {
+
+		public static void main(String[] args) throws IOException {
+			Scanner input=new Scanner(System.in);
+			int no;
+			InputStreamReader i=new InputStreamReader(System.in);
+			BufferedReader br=new BufferedReader(i);
+
+			System.out.print("\nENTER EVENT NAME : ");
+			String event_name=br.readLine();
+
+			if(event_name.equals("FREE CHECK UP ")){
+				System.out.print("\nENTER REGISTRATION DATE : ");
+				String date=br.readLine();
+				DateTimeFormatter format = DateTimeFormatter.ofPattern("d MMMM, yyyy");
+
+				LocalDate dt1 = LocalDate.parse(date,format);
+
+				LocalDate dt2 = LocalDate.parse("2021-08-30");
+				if(dt1.equals(dt2)){
+					Free_Checkup obj1=new Free_Checkup();
+					System.out.println("\n\t****** REGISTER MENU ******");
+					System.out.println("\n\t\t1.REGISTER");
+					System.out.println("\t\t2.DISPLAY");
+					System.out.println("\t\t3.SEARCH");
+					System.out.println("\t\t4.DELETE");
+					do {
+						System.out.print("\nENTER YOUR CHOICE : ");
+						int ch=input.nextInt();
+						switch(ch){
+						case 1:
+							obj1.insert();
+							break;
+
+						case 2:
+							obj1.display_free_checkup();
+							break;
+
+						case 3:
+							obj1.search();
+							break;
+
+						case 4:
+							obj1.delete();
+							break;
+
+						default:
+							System.out.println("\nINVALID INPUT !!");
+							break;
+						}
+						System.out.println();
+						System.out.println("\nDo you want to visit another page ???");
+						System.out.println("\nPRESS : ");
+						System.out.println("\n\t1 to CONTINUE");
+						System.out.println("\t0 to EXIT");
+						no = input.nextInt();
+						if(no == 0) {
+							System.out.println("\nTHANK FOR VISITING");
+						}
+						
+					}while(no==1);
+				}
+				else
+					System.out.println("\nDATE NOT MATCHED !!");
+			}
+		}
+
+	}
+
diff --git a/Reviews.java b/Reviews.java
new file mode 100644
index 0000000..d2156b9
--- /dev/null
+++ b/Reviews.java
@@ -0,0 +1,194 @@
+package services;
+
+import node.Person;
+import java.util.Scanner;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+import java.util.HashMap;
+
+public class Reviews{
+
+	InputStreamReader i=new InputStreamReader(System.in);
+	BufferedReader br=new BufferedReader(i);
+	
+	Person obj1[]=new Person[10];
+	
+	
+	ArrayList<Person> al=new ArrayList<Person>();
+	ArrayList<Person> a2=new ArrayList<Person>();
+	ArrayList<Person> a3=new ArrayList<Person>();
+	ArrayList<Person> a4=new ArrayList<Person>();
+	ArrayList<Person> a5=new ArrayList<Person>();
+	
+	int count;
+	int count1=0;
+	int count2=0;
+	int count3=0;
+	int count4=0;
+	int count5=0;
+	
+	public void accept() throws IOException
+	{
+		
+		obj1[count]=new Person();
+		System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		System.out.print("\nENTER YOUR NAME : ");
+		obj1[count].name=br.readLine();
+
+		System.out.print("\nENTER NO OF STARS : ");
+		obj1[count].rating=Integer.parseInt(br.readLine());
+		
+		System.out.print("\nENTER YOUR FEEDBACK : ");
+		obj1[count].content=br.readLine();
+		System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+		switch(obj1[count].rating)
+		{
+		case 1:
+			
+			obj1[count1]=obj1[count];
+			al.add(obj1[count1]);
+			count++;
+			count1++;
+			break;
+			
+		case 2:
+			
+			obj1[count2]=obj1[count];
+			a2.add(obj1[count2]);
+			count++;
+			count2++;
+			break;
+			
+		case 3:
+			
+			obj1[count3]=obj1[count];
+			a3.add(obj1[count3]);
+			count++;
+			count3++;
+			break;
+		
+		case 4:
+			obj1[count4]=obj1[count];
+			a4.add(obj1[count4]);
+			count++;
+			count4++;
+			break;
+			
+		case 5:
+			obj1[count5]=obj1[count];
+			a5.add(obj1[count5]);
+			count++;
+			count5++;
+			break;
+		}
+	}
+	public void display() throws NumberFormatException, IOException{	
+		System.out.println("\n\tSORT BY :"); 
+		System.out.println("\n\t\t1.Rating : 1");
+		System.out.println("\t\t2.Rating : 2");
+		System.out.println("\t\t3.Rating : 3");
+		System.out.println("\t\t4.Rating : 4");
+		System.out.println("\t\t5.Rating : 5");
+		System.out.print("\nENTER YOUR CHOICE : ");
+		int ch=Integer.parseInt(br.readLine());
+		
+		switch(ch){
+		case 1:
+		for(int j=0;j<count1;j++){
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+			System.out.println("\n****** SORTED BY 1 STAR ******");
+			System.out.println("\nNAME : "+al.get(j).name);
+			System.out.println("RATINGS : "+al.get(j).rating);
+			System.out.println("FEEDBACK : "+al.get(j).content);
+			System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");	
+		}
+		break;
+		case 2:
+			for(int j=0;j<count2;j++){
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				System.out.println("\n****** SORTED BY 2 STAR ******");
+				System.out.println("NAME : "+a2.get(j).name);
+				System.out.println("RATINGS : "+a2.get(j).rating);
+				System.out.println("FEEDBACK : "+a2.get(j).content);
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");	
+			}
+			break;
+		case 3:
+			for(int j=0;j<count3;j++){
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				System.out.println("\n****** SORTED BY 3 STAR ******");
+				System.out.println("NAME : "+a3.get(j).name);
+				System.out.println("RATINGS : "+a3.get(j).rating);
+				System.out.println("FEEDBACK : "+a3.get(j).content);
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");	
+			}
+			break;
+			
+		case 4:
+			for(int j=0;j<count4;j++){
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				System.out.println("\n****** SORTED BY 4 STAR ******");
+				System.out.println("NAME : "+a4.get(j).name);
+				System.out.println("RATINGS : "+a4.get(j).rating);
+				System.out.println("FEEDBACK : "+a4.get(j).content);
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");	
+			}
+			break;
+			
+		case 5:
+			for(int j=0;j<count5;j++){
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");
+				System.out.println("\n****** SORTED BY 5 STAR ******");
+				System.out.println("NAME : "+a5.get(j).name);
+				System.out.println("RATINGS : "+a5.get(j).rating);
+				System.out.println("FEEDBACK : "+a5.get(j).content);
+				System.out.println("\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\n");		
+			}
+			break;
+			
+		default:
+			System.out.println("INVALID CHOICE !!");
+			break;
+		}
+	}
+	public static void main(String[] args) throws IOException {
+
+		Reviews obj2=new Reviews();
+		int no;
+
+		Scanner input=new Scanner(System.in);
+		
+		System.out.println("\n****** REVIEW MENU ******");
+		System.out.println("\n\t1.ADD REVIEW");
+		System.out.println("\t2.DISPLAY REVIEWS\n");
+		do {
+			System.out.print("\nENTER YOUR CHOICE : ");
+			int ch=input.nextInt();
+
+			switch(ch) {
+
+			case 1:
+				obj2.accept();
+				break;
+
+			case 2:
+				obj2.display();
+				break;
+			}
+			System.out.println();
+			System.out.println("Do you want to continue ???");
+			System.out.println("Press : ");
+			System.out.println("\t1 to CONTINUE");
+			System.out.println("\t0 to EXIT");
+			no = input.nextInt();
+			if(no == 0) {
+				System.out.println("\n :::::: THANK FOR VISITING ::::::");
+			}
+		}while(no==1);
+	}
+}
+
+
+
diff --git a/bill.java b/bill.java
new file mode 100644
index 0000000..e88fd4a
--- /dev/null
+++ b/bill.java
@@ -0,0 +1,10 @@
+package node;
+
+public class bill{
+	public int flag;
+	public int med_code;
+	public String med_name;
+	public float rate;
+	public int quantity;
+	public float amount;
+}