//Write a Java program to swap two numbers without using the third variable class swapnum{ public static void main(String[]arg){ int a = 5; int b = 10; System.out.println("Before swapping: a = " + a + ", b = " + b); a = a + b; b = a - b; a = a - b; System.out.println("After swapping: a = " + a + ", b = " + b); } }