//Write a Java program to swap two numbers by using the third variable class swaptwonum{ public static void main(String[]arg){ int num1 = 5; int num2 = 10; System.out.println("Before swap : num1 = " + num1 + ", num2 = " + num2); int temp = num1; num1 = num2; num2 = temp; System.out.println(" after swapping: num1 = " + num1 + ", num2 = " + num2); } }