java多线程同步工具之Exchanger

来源：互联网发布：港股交易软件编辑：程序博客网时间：2024/06/06 01:21

Exchanger用于实现两个人之间的数据交换，每个人在完成一定的事物后想与对方交换数据，第一个先拿出数据的人将一直等待第二个人拿着数据到来时，才能彼此交换数据。

案例：

public class ExchangerTest {public static void main(String[] args) {/* 创建缓存型线程池 */ExecutorService service = Executors.newCachedThreadPool();/* 创建爱你Exchanger对象 */final Exchanger exchanger = new Exchanger();service.execute(new Runnable() {public void run() {try {String data1 = "胡锦涛";System.out.println("线程" + Thread.currentThread().getName() + "正在把数据" + data1 + "换出去");/*休眠*/Thread.sleep((long) (Math.random() * 10000));/*交换数据*/String data2 = (String) exchanger.exchange(data1);System.out.println("线程" + Thread.currentThread().getName() + "换回的数据为" + data2);} catch (Exception e) {}}});service.execute(new Runnable() {public void run() {try {String data1 = "习近平";System.out.println("线程" + Thread.currentThread().getName() + "正在把数据" + data1 + "换出去");/*休眠*/Thread.sleep((long) (Math.random() * 10000));/*交换数据*/String data2 = (String) exchanger.exchange(data1);System.out.println("线程" + Thread.currentThread().getName() + "换回的数据为" + data2);} catch (Exception e) {}}});}}

程序运行的结果：

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