New to Java

I am trying to make an application that inputs 2 fractions and adds,subs,multi, divides them.


I have most of my methods complete, its just I can't figure out how to successfully use the euclidean algorithm for my adding method


this is my gcd class


public static int gcd(int a, int b){

if(b == 0)
return a;

return gcd(b, a % b);


i am trying to call it in my adding method, but it outputs (b, a % b) two numbers

can someone help me out with this?