JAVA5线程并发库[8]-Exchanger(转)

    用于实现两个线程之间的数据交换，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要一直等待第二个人拿着数据到来时，才能彼此交换数据

   

import java.util.concurrent.Exchanger;

import java.util.concurrent.ExecutorService;

import java.util.concurrent.Executors;

 

public class ExchangerTest {

 

     public static void main(String[] args) {

         ExecutorService service = Executors.newCachedThreadPool();

         final Exchanger<String> exchanger = new Exchanger<String>();

         service.execute( new Runnable() {

             public void run() {

                 try {

 

                     String data1 = "MacBook Pro" ;

                     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);

                     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 = "8000RMB" ;

                     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);

                     System.out.println( "线程" + Thread.currentThread().getName()

                             + "换回的数据为" + data2);

                 } catch (Exception e) {

 

                 }

             }

         });

         service.shutdown();

     }

}

上面讲到这些看上去意义不大，其实新技术就是这个样子，你没有遇到新技术善于解决的需求，所以没有看到它的价值，不过说不定下个月，老板的需求就让你抓耳挠腮了，那个时候说不定就是这些新技术大显身手的时候

 

 

 

转自：http://blog.onede4.com/java5-thread-concurrent-exchanger/