GCD implementation in Java

public class Maths {

      public int gcd(int p, int q) {

            if (q == 0){

                  return p;

            }

            return gcd(q, p % q);

      }

      public static void main(String[] args) {

            int a = 36;

            int b = 48;

           

            Maths m = new Maths();

            int g = m.gcd(a,b);

            System.out.println("GCD is " + g);

      }

}