Completed Java Assignment 010

README.md

@@ -10,23 +10,26 @@
   6. All the instance methods for the class **Student**
 
 ```java
-class Student{
-    private String name;
-    private int rollNo;
+class Student{ //Class name
+    private String name; // instance variable - type: String
+    private int rollNo; // instance variable - type: int
 
-    Student(String s, int r)
+  //Constructor 
+    Student(String s, int r) // Constructor Parameters: String: s, int: r
     {
-   	    name = s;
-   	    rollNo = r;
+   	    name = s; // sets instance variable 'name' to value of parameter 's'
+   	    rollNo = r; // sets instance variable 'rollNo' to value of parameter 'r'
     }
 
-    void methodForDisplay()
+    void methodForDisplay() // instance method
     {
         System.out.println(name+"'s Roll No: "+rollNo);
     }
 
     public static void main(String[] args) {
-        Student obj1=new Student("Rambo",21);
+        Student obj1=new Student("Rambo",21); /* Student object gets created,
+     instance variable values set by parameters passed to Student constructor
+      */ 
         obj1.methodForDisplay();
     }
 }
@@ -37,6 +40,14 @@ class Student{
 * Read the W3Schools page on class methods: [W3Schools Java Class Methods](https://www.w3schools.com/java/java_class_methods.asp)
 * In your own words, write a few sentences below explaining the difference between static and public methods in relation to a class.
 
+  ```text
+  As it relates to a class, a static method can be called independently from 
+  an object and can be called without an object being created. A public 
+  method, however, can only be accessed by an object of that class. In order 
+  to access a public method, an object must first be created and then used 
+  to access the method.  
+  ```
+
 ## Part 3 - Dogs
 
 * View the image below, and from the image, construct a Java file **Dog** that mirrors the diagrammed class and the 3 dog objects.

src/Dog.java

@@ -0,0 +1,58 @@
+import java.util.*;
+public class Dog {
+    private String breed;
+    private String size;
+    private String color;
+    private int age;
+    private String name;
+
+    public Dog(String breed, String size, String color, int age) {
+        this.breed = breed;
+        this.size = size;
+        this.color = color;
+        this.age = age;
+    }
+
+    public void eat() {
+        if(Objects.equals(this.size, "large")) {
+            this.size = "extra large";
+        } else if (Objects.equals(this.size, "medium")) {
+            this.size = "large";
+        } else if (Objects.equals(this.size, "small")) {
+            this.size = "medium";
+        }
+    }
+
+    public void run() {
+        System.out.println(this.name + " is running around. They are now tired and could use some sleep.");
+    }
+
+    public void sleep() {
+        if (this.name == null) {
+            System.out.println(this + " is sleeping...zzz...zzz...zzz...");
+        } else {
+            System.out.println(this.name + " is sleeping...zzz...zzz...zzz...");
+        }
+    }
+
+    public void name(String name) {
+        this.name = name;
+    }
+
+
+    public static void main(String[] args) {
+        Dog dog1 = new Dog("Bulldog", "large", "light grey", 5);
+        Dog dog2 = new Dog("Beagle", "large", "orange", 6);
+        Dog dog3 = new Dog("German Shepherd", "large", "white & orange", 6);
+
+        System.out.println(dog1.toString());
+        dog1.name("Bully");
+        System.out.println(dog1.name.toString());
+        dog2.sleep();
+        dog1.sleep();
+        dog1.run();
+        dog1.eat();
+        System.out.println(dog1.size.toString());
+
+    }
+}