Java线程：新特征-有返回值的线程

import java.util.concurrent.*; 

/** 
* Java线程：有返回值的线程 
* 
* @author Administrator 2009-11-5 0:41:50 
*/ 
public  class Test { 
         public  static  void main(String[] args)  throws ExecutionException, InterruptedException { 
                 //创建一个线程池 
                ExecutorService pool = Executors.newFixedThreadPool(2); 
                 //创建两个有返回值的任务 
                Callable c1 =  new MyCallable( "A"); 
                Callable c2 =  new MyCallable( "B"); 
                 //执行任务并获取Future对象 
                Future f1 = pool.submit(c1); 
                Future f2 = pool.submit(c2); 
                 //从Future对象上获取任务的返回值，并输出到控制台 
                System.out.println( ">>>"+f1.get().toString()); 
                System.out.println( ">>>"+f2.get().toString()); 
                 //关闭线程池 
                pool.shutdown(); 
        } 
} 

class MyCallable  implements Callable{ 
         private String oid; 

        MyCallable(String oid) { 
                 this.oid = oid; 
        } 

        @Override 
         public Object call()  throws Exception { 
                 return oid+ "任务返回的内容"; 
        } 
}