public class Abc {

    private class Bc {

        public void print() {

            System.out.println(Abc.this.self());

        }

    }

    private Bc bc = new Bc();

    public String self() {

        return "Abc";

    }

    public void print() {

        bc.print();

    }

}

public class Cde extends Abc {

    @Override

    public String self() {

        return "cde";

    }

    public static void main(String[] args) {

        Cde c = new Cde();

        c.print();

    }

}