public class SomeClass {
    public static void main(String[] args) {
        SomeClass c = new SomeClass();
        c.f1(1, 1);
        // Result: 4
    }

    public void f1(Integer i1, Integer i2) {
        System.out.println("1");
    }

    public void f1(Integer i1, int i2) {
        System.out.println("2");
    }

    public void f1(int b, Integer c) {
        System.out.println("3");
    }

    // This method is called
    public void f1(long b, long c) {
        System.out.println("4");
    }
}