JDK1.5 获取线程执行结果 Callable Future

import java.util.Random;
import java.util.concurrent.Callable;
import java.util.concurrent.CompletionService;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorCompletionService;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;

/**
* Callable  Future  (类是有回调的 线程池任务) 可以获取 线程执行后的 结果(无序的)
*/
public class CallableAndFuture {
/**
* @param args
* @throws ExecutionException
* @throws InterruptedException
*/
public static void main(String[] args) throws InterruptedException,Exception {
ExecutorService threadPool=Executors.newSingleThreadExecutor();

// 提交当个任务  然后获取等待结果
Future<String> future=threadPool.submit(new Callable<String>() {
@Override
public String call() throws Exception {
// TODO Auto-generated method stub
Thread.sleep(2000);
return "Hello: "+Thread.currentThread().getName();
}
});
System.out.println("等待结果中...");
//什么时候有结果后 再获取结果
System.out.println("结果为:"+future.get());

//等待 1秒后 获取结果  没有取到结果就算了
System.out.println("结果为:"+future.get(1, TimeUnit.SECONDS));
threadPool.shutdown();

//批量提交任务  然后 循环获取 执行后的结果
ExecutorService threadPool1=Executors.newFixedThreadPool(10);
CompletionService<Integer> completionService=new ExecutorCompletionService<Integer>(threadPool1);
for (int i = 0; i < 10; i++) {
final int seq=i;
completionService.submit(new Callable<Integer>() {
@Override
public Integer call() throws Exception {
// TODO Auto-generated method stub
Thread.sleep(new Random().nextInt(5000));
return seq;
}

});
}
System.out.println("2等待结果中...");
for (int i = 0; i < 10; i++) {
System.out.println(completionService.take().get());
}

threadPool1.shutdown();

}

}