import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executors;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;
import static java.util.concurrent.TimeUnit.*;

public class TimeUnitTest3 {
    public TimeUnitTest3() {
        ExecutorService e = Executors.newSingleThreadExecutor();
        Executors.execute(e, new Task(this));

        synchronized (this) {
            try {
                MILLISECONDS.timedWait(this, 1000L);
                System.out.println("Woke Up.");
            } catch (InterruptedException ex) {
                ex.printStackTrace();
            }
        }

        e.shutdown();
    }

    class Task implements Runnable {
        private Object target;

        public Task(Object target) {
            this.target = target;
        }

        public void run() {
            try {
                Thread.sleep(500L);

                System.out.println("Wake Up!");
                synchronized (target) {
                    target.notifyAll();
                }
            } catch (InterruptedException ex) {
                System.out.println("Task is Canceled");
                return;
            }
        }
    }

    public static void main(String[] args) {
        new TimeUnitTest3();
    }
}