public class TestSteinSaksPapir {
    public static void main(String[] args) {
        SteinSaksPapir stein = new Stein();
        SteinSaksPapir saks = new Saks();
        SteinSaksPapir papir = new Papir();

        System.out.println(stein.compareTo(saks)); // 1
        System.out.println(papir.compareTo(saks)); //-1
        System.out.println(saks.compareTo(saks)); //0
    }
}