ניתוח ירושה ופולימורפיזם

1public class A {
2    public A() { System.out.println("ctor A"); }
3    public void foo(int x) {
4        System.out.println("A foo int " + x);
5    }
6    public void foo(double y) {
7        System.out.println("A foo double " + y);
8    }
9    public void bar(int x) {
10        System.out.println("A bar " + x);
11        foo(x);
12    }
13}
14
15public class B extends A {
16    public B() { System.out.println("ctor B"); }
17    public void foo(int x) {
18        System.out.println("B foo int " + x);
19    }
20    public void bar() {
21        System.out.println("B bar");
22        foo(2);
23    }
24    public void another(int x) {
25        System.out.println("B another " + x);
26        super.foo(x);
27        foo(2.0 * x);
28    }
29}
30
31public class Tester {
32    public static void main(String[] args)
33    {
34    }
35}