Swapping Two Numbers Without Using a Temporary Variable

 public class SwapWithoutTemp {

    public static void main(String[] args) {

        int a = 5, b = 10;

        a = a + b; // a = 5 + 10 = 15

        b = a - b; // b = 15 - 10 = 5

        a = a - b; // a = 15 - 5 = 10

        System.out.println("After Swap: a = " + a + ", b = " + b);

    }

}