Complete the code segment to swap two numbers using call by object reference.

 

Complete the code segment to swap two numbers using call by object reference.

Program:

import java.util.Scanner;

class Question {  //Define a class Question with two elements e1 and e2.

  Scanner sc = new Scanner(System.in);

int e1 = sc.nextInt();  //Read e1

int e2 = sc.nextInt();  //Read e2

}

public class Exercise3_5{

// Define static method swap()to swap the values of e1 and e2 of class Question.

public static void swap(Question t) {

int temp = t.e1;

    t.e1 = t.e2;

    t.e2 = temp;

  }

public static void main(String[] args) {

//Create an object of class Question

Question t = new Question ();

  //Call the method swap()

swap(t);

System.out.println(t.e1+" "+t.e2);    

  }

}

Sample Test Cases

	Input	Output
Test Case 1	10 20	20 10