3. NEP Java Program with class variable that is available for all instances of a class. Use static variable declaration. Observe the changes that occur in object’s member variable values.

3. Program with class variable that is available for all instances of a class. Use static variable declaration. Observe the changes that occur in object’s member variable values.

import  java.io.*;

class Prog3

{

     static int num1; //Class Variable

     int num2;    

     public static void  main(Stringargs[])

     {

          Prog3.num1=30;

          Prog3 obj1=new Prog3();

          Prog3 obj2=new Prog3();

          obj1.num2=25;

          obj2.num2=50;

          System.out.println("Assigning Prog3.num1=30, obj1.num2=25 and

obj2.num2=50");

          System.out.println("Prog3.num1="+Prog3.num1);

          System.out.println("obj1.num2="+obj1.num2);

          System.out.println("obj2.num2="+obj2.num2);

          obj1.num1=45;

          obj1.num2=67;

          System.out.println("\nAfter changing class variable with

obj1.num1=45 and obj1.num2=67");

          System.out.println("Prog3.num1="+Prog3.num1);

          System.out.println("obj1.num1="+obj1.num1);

          System.out.println("obj2.num1="+obj2.num1);

          System.out.println("obj1.num2="+obj1.num2);

          System.out.println("obj2.num2="+obj2.num2);

     }

}