多个线程运行结束之后主线程再执行CountDownLatch
多个线程运行结束之后主线程再执行CountDownLatch
学习了:http://blog.csdn.net/lvyuanj/article/details/50737123 这个要膜拜一下!
http://blog.csdn.net/lynnlovemin/article/details/75604209
膜拜一下: 原文引用:
import java.util.concurrent.CountDownLatch; /** * @filename : MyThread.java * @description : 描述(中文) * @author : lvyuanjun * @create : 2016年2月24日 下午2:04:30 * * Modification History:修改日志 * Date Author Version description * ------------------------------------------------------------------------------- * 2016年2月24日 下午2:04:30 lvyuanjun */ public class MyThread { public static void main(String[] args) throws InterruptedException { CountDownLatch countDownLatch = new CountDownLatch(3); //子线程计算器 System.out.println("start..."); FirstThread f = new FirstThread(countDownLatch); Thread thread = new Thread(f); thread.start(); SecondThread s = new SecondThread(countDownLatch); Thread thread1 = new Thread(s); thread1.start(); ThreeThread t = new ThreeThread(countDownLatch); Thread thread2 = new Thread(t); thread2.start(); countDownLatch.await(); //等待子线程计算器为零时,则所有的子线程都已经运行完成 System.out.println("end..."); } } class FirstThread implements Runnable { private CountDownLatch countDownLatch; public FirstThread(CountDownLatch countDownLatch){ this.countDownLatch = countDownLatch; } public void run() { System.out.println("FirstThread start...."); try { Thread.sleep(1000*5); } catch (InterruptedException e) { e.printStackTrace(); }finally{ System.out.println("FirstThread start1...."); countDownLatch.countDown(); //子线程执行完之后,子线程计算器减一,直至到零 } } } class SecondThread implements Runnable{ private CountDownLatch countDownLatch;; public SecondThread(CountDownLatch countDownLatch){ this.countDownLatch = countDownLatch; } @Override public void run() { System.out.println("SecondThread start...."); try { Thread.sleep(1000*9); } catch (InterruptedException e) { e.printStackTrace(); }finally{ System.out.println("SecondThread start1...."); countDownLatch.countDown(); //子线程执行完之后,子线程计算器减一,直至到零 } } } class ThreeThread implements Runnable{ private CountDownLatch countDownLatch;; public ThreeThread(CountDownLatch countDownLatch){ this.countDownLatch = countDownLatch; } @Override public void run() { System.out.println("ThreeThread start...."); try { Thread.sleep(1000*3); } catch (InterruptedException e) { e.printStackTrace(); }finally{ System.out.println("ThreeThread start1...."); countDownLatch.countDown(); //子线程执行完之后,子线程计算器减一,直至到零 } } }