多线程并发库工具类Exchanger

最新推荐文章于 2025-05-21 14:28:48 发布

原创最新推荐文章于 2025-05-21 14:28:48 发布 · 113 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#多线程

java 专栏收录该内容

19 篇文章

订阅专栏

本文通过一个具体的 Java 示例演示了 Exchanger 的使用方法。利用 ExecutorService 创建线程来执行任务，两个线程分别携带数据进行交换，展示 Exchanger 的同步机制。




import java.util.concurrent.Exchanger;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
publicclass ExchangerTest {
   publicstaticvoid main(String[] args) {
      ExecutorService service = Executors.newCachedThreadPool(); //缓存线程池（动态）
      final Exchanger exchanger = new Exchanger();
       service.execute(new Runnable(){
        public void run() {
           try{
              String data1 = "zxx";
              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); //运行到此，阻塞，必须要两个交换数据的线程都到达交换状态，才能交换数据
              System.out.println("线程" + Thread.currentThread().getName() + 
"换回的数据为" + data2); 
           }catch(Exception e){

           }
        }
      });

      service.execute(new Runnable(){
        publicvoid run() {
           try{
              String data1 = "lhm";
              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); //运行到此，阻塞，必须要两个交换数据的线程都到达交换状态，才能交换数据
              System.out.println("线程" + Thread.currentThread().getName() + "换回的数据为" + data2);
           }catch(Exception e){

           }         
        } 
      });    
   }
}