Java Program to swap two numbers without using third variable

---

In this program, You will learn how to swap two numbers without using third variable in java.

---

Before swap: 10 20

After swap: 20 10

Example: How to swap two numbers without using third variable in java.

import java.util.Scanner;

class Main {
    public static void main(String args[]) {

        int a,b;
        Scanner sc = new Scanner(System.in);

        System.out.print("Enter two numbers:");
        a = sc.nextInt();
        b = sc.nextInt();

        a = a + b;
        b = a - b;
        a = a - b;

        System.out.println("After swapping a is:"+a);
        System.out.println("After swapping b is:"+b);

    }
}

Output:

Enter two numbers:10 20
After swapping a is:20
After swapping b is:10