jdk5 CountDownLatch

CountDownLatch能够让所有线程在某一个点阻塞，等待CountDownLatch的Count为0时才继续。

package com.skydream.thread.countDownLatch;

import java.util.concurrent.CountDownLatch;

public class CountDownLatchTest {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		final CountDownLatch countDownLatch = new CountDownLatch(3);
		for(int i=0;i<2;i++)
		{
			new Thread(){
				public void run() {
					try {
                         System.out.println("awaiting......");
						countDownLatch.await();
						System.out.println("executor.......");
					} catch (InterruptedException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
					
				};
			}.start();
		}
		
		
		new Thread(){
			public void run() {
				System.out.println("the other Thread");
				try {
					countDownLatch.await();
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				System.out.println("executor222.......");
				
			}
		}.start();
		
		for(int i=0;i<5;i++)
		{
			try {
				Thread.sleep(5000);
				countDownLatch.countDown();
				System.out.println("countDownLatch number:"+countDownLatch.getCount());
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}

}