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// concurrent/QuittableTask.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.concurrent.atomic.AtomicBoolean;

import onjava.Nap;

public class QuittableTask implements Runnable {

final int id;

public QuittableTask(int id) { this.id = id; }

private AtomicBoolean running =

new AtomicBoolean(true);

public void quit() { running.set(false); }

@Override public void run() {

while(running.get()) // [1]

new Nap(0.1);

System.out.print(id + " "); // [2]

}

}