Swap Numbers Without Using Third Variable Java Example

/*
        Swap Numbers Without Using Third Variable Java Example
        This Swap Numbers Java Example shows how to
        swap value of two numbers without using third variable using java.
*/

public class SwapElementsWithoutThirdVariableExample {

        public static void main(String[] args) {
             
                int num1 = 10;
                int num2 = 20;
             
                System.out.println("Before Swapping");
                System.out.println("Value of num1 is :" + num1);
                System.out.println("Value of num2 is :" +num2);
             
                //add both the numbers and assign it to first
                num1 = num1 + num2;
                num2 = num1 - num2;
                num1 = num1 - num2;
             
                System.out.println("Before Swapping");
                System.out.println("Value of num1 is :" + num1);
                System.out.println("Value of num2 is :" +num2);
        }


}

/*
Output of Swap Numbers Without Using Third Variable example would be
Before Swapping
Value of num1 is :10
Value of num2 is :20
Before Swapping
Value of num1 is :20
Value of num2 is :10
*/