If a class has a static method sum() and an instance method sum(), which one will be called in the following code?

public class Adder {
    public static int sum(int a, int b) {
        return a + b;
    }

    public int sum(int a, int b, int c) {
        return a + b + c;
    }
    
    public static void main(String[] args) {
        System.out.println(sum(1, 2));
    }
}