LCM implementation in Java

public class Maths {

      public int lcm(int num1, int num2) {

            if (num1 == 0 || num2 == 0) {

                  return 0;

            }

            if (num1 < num2) {

                  num1 = num1 ^ num2;

                  num2 = num1 ^ num2;

                  num1 = num1 ^ num2;

            }

            int num = num1 % num2;

            if (num == 0) {

                  return num1;

            }

            for (int i = 2; i <= num; i++) {

                  if ((num1 * i) % num2 == 0) {

                        return i * num1;

                  }

            }

            return num1 * num2;

      }

      public static void main(String[] args) {

            int a = 24;

            int b = 16;

            Maths m = new Maths();

            int l = m.lcm(a, b);

            System.out.println("LCM is " + l);

      }

}