Demo.java

import java.util.Scanner;
class A
{
	void abc()
	{
		System.out.print("NAme : ");
		Scanner sc=new Scanner(System.in);
		String name =sc.next();
		System.out.println("NAme  : "+name );
	}
}
class Demo
{
	public static void main(String args[])
	{
		A a =new A();
		a. abc();
		
		
	}
}


		JDK 
			dev (lib )
			run 

		JDK = lib + JRE
		JRE = ony we can run + JVM 
		JVM = 
			load the class fils
			verfiy the code 
			execute the code  

			
		
		  C++ ---------------------> C# (paid )
		==============> java  (free ) : security 
		------------------------> Python (free ) : we have but not like java ()



	SC 					SC 
	compile 
			compiler 
	Bytecode (.class )
			interpeter 			interpeter