Java线程总结（十）：并发包------两个线程交换数据Exchanger

package com.ydj;import java.util.concurrent.Exchanger;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;public class ExchangerTest {/** * 用于实现两个人之间的数据交换， * 每个人在完成一定的事务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。 */public static void main(String[] args) {ExecutorService service = Executors.newCachedThreadPool();//Exchanger可以在两个线程之间交换数据，只能是2个线程，不支持更多的线程之间互换数据。//一个线程调用exchange()方法后，他会陷入阻塞状态，直到另一个线程也调用了exchange()方法，//然后以线程安全的方式交换数据，之后两个线程继续运行，其他线程不影响final Exchanger exchanger = new Exchanger();//交换器service.execute(new Runnable(){public void run() {try {String data1 = "\"呵呵\"";System.out.println("线程" + Thread.currentThread().getName() + "正在把数据" + data1 +"换出去");Thread.sleep((long)(Math.random()*10000));String data2 = (String)exchanger.exchange(data1);//data1换出去，换回data2System.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 = "\"哈哈\"";System.out.println("线程" + Thread.currentThread().getName() + "正在把数据" + data1 +"换出去");Thread.sleep((long)(Math.random()*10000));String data2 = (String)exchanger.exchange(data1);//data1换出去，换回data2System.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 {while(true){Thread.sleep((long)(Math.random()*4000));System.out.println("线程"+ Thread.currentThread().getName() + "不换数据,走自己的路让别人换数据去吧");}}catch(Exception e){}}});}}

运行结果：