class Egg2 {
  protected class Yolk {
    public Yolk() { System.out.println("Egg2.Yolk()"); }
    public void f() { System.out.println("Egg2.Yolk.f()");}
  }
  private Yolk y = new Yolk();
  public Egg2() { System.out.println("New Egg2()"); }
  public void insertYolk(Yolk yy) { y = yy; }
  public void g() { y.f(); }
}

public class BigEgg2 extends Egg2 {
  private static Test monitor = new Test();
  public class Yolk extends Egg2.Yolk {
    public Yolk() { System.out.println("BigEgg2.Yolk()"); }
    public void f() {
      System.out.println("BigEgg2.Yolk.f()");
    }
  }
  public BigEgg2() { insertYolk(new Yolk()); }
  public static void main(String[] args) {
    Egg2 e2 = new BigEgg2();
    e2.g();
  }
}