current包下CyclicBarrier的使用

public static void main(String[] args) {
final CyclicBarrier cyclicBarrier = new CyclicBarrier(5);
for (int i = 0; i < 5; i++) {
final int sleepTime = i * 1000;
new Thread(new Runnable() {
public void run() {
System.out.println(Thread.currentThread().getName() + "    开始读取数据....");
try {
Thread.currentThread().sleep(sleepTime * 2);
cyclicBarrier.await();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (BrokenBarrierException e) {
e.printStackTrace();
}
System.out.println(Thread.currentThread().getName() + "  数据读取完成......");
}
}).start();
}
}