// innerclasses/BigEgg2.java

// (c)2017 MindView LLC: see Copyright.txt

// We make no guarantees that this code is fit for any purpose.

// Visit http://OnJava8.com for more book information.

// Proper inheritance of an inner class

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();

Egg2() { System.out.println("New Egg2()"); }

public void insertYolk(Yolk yy) { y = yy; }

public void g() { y.f(); }

}

public class BigEgg2 extends Egg2 {

public class Yolk extends Egg2.Yolk {

public Yolk() {

System.out.println("BigEgg2.Yolk()");

}

@Override

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();

}

}

/* Output:

Egg2.Yolk()

New Egg2()

Egg2.Yolk()

BigEgg2.Yolk()

BigEgg2.Yolk.f()

*/