// interfaces/Machine.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.

import java.util.*;

import onjava.Operations;

class Bing implements Operations {

public void execute() {

Operations.show("Bing");

}

}

class Crack implements Operations {

public void execute() {

Operations.show("Crack");

}

}

class Twist implements Operations {

public void execute() {

Operations.show("Twist");

}

}

public class Machine {

public static void main(String[] args) {

Operations.runOps(

new Bing(), new Crack(), new Twist());

}

}

/* Output:

Bing

Crack

Twist

*/