CyclicBarrier 用法

//案例如下：

package com.aresoft.test;

import java.util.Random;
import java.util.concurrent.BrokenBarrierException;
import java.util.concurrent.CyclicBarrier;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class TestCyclicBarrier {

public static void main(String[] args) {

ExecutorService exec = Executors.newCachedThreadPool();
final Random random=new Random();
//这个等待一件事情一起完成去做事情的

final CyclicBarrier barrier=new CyclicBarrier(4,new Runnable(){
@Override
public void run() {
System.out.println("大家都到齐了，开始happy去");
}});

for(int i=0;i<4;i++){
exec.execute(new Runnable(){
@Override
public void run() {
try {
Thread.sleep(random.nextInt(1000));
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(Thread.currentThread().getName()+"到了，其他哥们呢");
try {
barrier.await();//等待其他哥们
} catch (InterruptedException e) {
e.printStackTrace();
} catch (BrokenBarrierException e) {
e.printStackTrace();
}
}});
}
exec.shutdown();

}

}