Thread pause/resume technique

gistfile1.java

package sandbox;

import java.util.Date;
import java.util.concurrent.Phaser;
import java.util.concurrent.atomic.AtomicBoolean;

public class PhaserTest implements Runnable {
	private static AtomicBoolean paused = new AtomicBoolean(false);
	private static Phaser p = new Phaser(1);

	public static void main(String[] args) throws InterruptedException {
		Thread t = new Thread(new PhaserTest());
		t.start();

		boolean state = true;
		while (true) {
			Thread.sleep(3000);

			if (state) {
				System.err.println("pause!");;
				if (paused.compareAndSet(false, true)) // considering multi-threaded
					p.register();
			} else {
				System.err.println("resume!");;
				if (paused.compareAndSet(true, false)) // considering multi-threaded
					p.arriveAndDeregister();
			}
			
			state = !state;
		}
	}

	@Override
	public void run() {
		while (true) {
			try {
				p.arriveAndAwaitAdvance(); // check paused
				Thread.sleep(1000);
			} catch (InterruptedException e) {
			}
			System.out.println(new Date());
		}
	}
}