// interfaces/Instantiable.java

// (c)2021 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.

abstract class Uninstantiable {

abstract void f();

abstract int g();

}

public class Instantiable extends Uninstantiable {

@Override void f() { System.out.println("f()"); }

@Override int g() { return 22; }

public static void main(String[] args) {

Uninstantiable ui = new Instantiable();

}

}