How to determine which default method to call?

Question

Java

I have an interesting question about toad8 here: There are 2 interfaces with 2 default methods with the same name, how is it possible to determine which interface to pull the method from?

interface Test1 {
   default String test() {
      return "a";
   }
}

interface Test2 {
   default String test() {
      return "b";
   }
}

public class Abc implements Test1, Test2 {

   public static void main() {
       System.out.println(new Abc().test());
   }
}

Answer 1

This is not possible, the compiler will give an error due to a method collision)