线程:Exchanger同步工具

时间:2014-05-12 17:55:23   收藏:0   阅读:379

可以在对中对元素进行配对和交换的线程的同步点,类似于交易,A拿着钱到达指定地点,B拿着物品到达指定地点,相互交换,然后各自忙各自的事去了。

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 1 package ch03;
 2 
 3 import java.util.concurrent.Exchanger;
 4 
 5 public class ExchangerTest {
 6 
 7     public static void main(String[] args) {
 8         final Exchanger<String> changer = new Exchanger<>();
 9         new Thread(new Runnable() {
10             
11             @Override
12             public void run() {
13                 try{
14                     String data1 = "xyy";
15                     System.out.println("交换前,"+Thread.currentThread().getName()+"的数据是:"+data1);
16                     //等待交易
17                     String afterChange = changer.exchange(data1);
18                     System.out.println("交换后,"+Thread.currentThread().getName()+"的数据是:"+afterChange);
19                 }catch (Exception e) {
20                 }
21             }
22         }).start();
23         
24         new Thread(new Runnable() {
25             
26             @Override
27             public void run() {
28                 try{
29                     String data1 = "zy";
30                     System.out.println("交换前,"+Thread.currentThread().getName()+"的数据是:"+data1);
31                     //等待交易
32                     String afterChange = changer.exchange(data1);
33                     System.out.println("交换后,"+Thread.currentThread().getName()+"的数据是:"+afterChange);
34                 }catch (Exception e) {
35                 }
36             }
37         }).start();
38     }
39 
40 }
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