Find the GCD (Greatest Common Divisor) of two numbers in java

public class GCD {
    public static int gcd(int a, int b) {
        if(b == 0) return a;
        return gcd(b, a % b);
    }
     public static void main(String[] args) {
        int num1 = 48, num2 = 18;
        System.out.println("GCD of " + num1 + " and " + num2 + " is " + gcd(num1, num2));
    }
}