/* function definition to swap the values */

void swap(int *x, int *y) {

​

   int temp;

   temp = *x;    /* save the value at address x */

   *x = *y;      /* put y into x */

   *y = temp;    /* put temp into y */

   return;

}

​

public class CallByReference {

    String name;

​

    void change(CallByReference r2) {

        r2.name = "Rubel";

    }

​

    public static void main(String[] args) {

        CallByReference r1 = new CallByReference();

        r1.name = "Anis";

        System.out.println("before calling : "+r1.name);

​

        r1.change(r1);

        System.out.println("after calling : "+r1.name);

    }

}