Write a JAVA program for call by Reference.

 Aim: Write a JAVA program for  call by Reference. 

Program:

class Operation2

{  

 int data=50;  

  

 void change(Operation2 op)

 {  

 op.data=op.data+100;//changes will be in the instance variable  

 }  

     

    

 public static void main(String args[])

 {  

   Operation2 op=new Operation2();  

  

   System.out.println("before change "+op.data);  

   op.change(op);//passing object  

   System.out.println("after change "+op.data);  

  

 }  

}  

Output: