// patterns/Macro.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.

import java.util.*;

public class Macro {

public static void main(String[] args) {

List<Runnable> macro = new ArrayList<>(

Arrays.asList(

() -> System.out.print("Hello "),

() -> System.out.println("World! ")

));

macro.forEach(Runnable::run);

macro.add(

() -> System.out.print("I'm the command pattern!")

);

macro.forEach(Runnable::run);

}

}

/* Output:

Hello World!

Hello World!

I'm the command pattern!

*/