package com.yonge.lock;
import java.util.concurrent.CyclicBarrier;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
/**
* 需求：模擬三個人一起去秋遊的情景，首先三個人預定好在哪個景點集合，集合完後，又自由活動，又到另外一個景點集合，如此反覆...
* @author wb-gaoy
* @version $Id: CyclicBarrierTest.java,v 0.1 2012-1-4 下午4:36:12 wb-gaoy Exp $
*/
public class CyclicBarrierTest {
public static void main(String[] args) {
ExecutorService service = Executors.newCachedThreadPool();
final CyclicBarrier cb = new CyclicBarrier(3);
for (int i = 0; i < 3; i++) {
Runnable runnable = new Runnable() {
public void run() {
try {
Thread.sleep((long) (Math.random() * 10000));
System.out.println("線程" + Thread.currentThread().getName()
+ "即將到達集合地點1，當前已有" + (cb.getNumberWaiting() + 1)
+ "個已經到達，"
+ (cb.getNumberWaiting() == 2 ? "都到齊了，繼續走啊" : "正在等候"));
cb.await();
Thread.sleep((long) (Math.random() * 10000));
System.out.println("線程" + Thread.currentThread().getName()
+ "即將到達集合地點2，當前已有" + (cb.getNumberWaiting() + 1)
+ "個已經到達，"
+ (cb.getNumberWaiting() == 2 ? "都到齊了，繼續走啊" : "正在等候"));
cb.await();
Thread.sleep((long) (Math.random() * 10000));
System.out.println("線程" + Thread.currentThread().getName()
+ "即將到達集合地點3，當前已有" + (cb.getNumberWaiting() + 1)
+ "個已經到達，"
+ (cb.getNumberWaiting() == 2 ? "都到齊了，繼續走啊" : "正在等候"));
cb.await();
} catch (Exception e) {
e.printStackTrace();
}
}
};
service.execute(runnable);
}
service.shutdown();
}
}