output/ex20.java


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22

class ex20 {
    public static void main(String[] a){
        System.out.println(new A().start());
    }
}

class C extends B{
}

class B extends A{
}

class A{

    A a;
    C c;

    public int start(){
        a = c;
        return 0;
    }
}