שחזור בנאים לפי תרשים עצמים

1public class AA
2{
3    private int x;
4    ***
5}
6
7public class BB extends AA
8{
9    private AA f;
10    ***
11}
12
13public class Test {
14    public static void main(String[] args) {
15        AA a1 = new AA ();
16        AA a2 = new AA (8);
17        AA a3 = new AA (3);
18        AA a4 = new AA (a1);
19        AA a5 = new AA (a2);
20        BB b1 = new BB ();
21        BB b2 = new BB (6, a4);
22        BB b3 = new BB (5, a2);
23        BB b4 = new BB (a4);
24        BB b5 = new BB (a2);
25    }
26}