Java program to swap two number

public class SwapNumbers {
    public static void main(String[] args) {
        int num1 = 15;
        int num2 = 35;
        System.out.println("Before Swap");
        System.out.println("num1:" + num1 + " num2:" + num2);
        int temp = num1;
        num1 = num2;
        num2 = temp;
        System.out.println("After Swap");
        System.out.println("num1:" + num1 + " num2:" + num2);
    }
}