实现接口Callable,能给个例子吗?要求返回ArrayList();对象
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- danielinbiti 2016-03-29 09:54关注
public class Test2 { public static void main(String[] args) { ExecutorService executor = Executors.newCachedThreadPool(); Task task = new Task(); Future<ArrayList> result = executor.submit(task); executor.shutdown(); try { Thread.sleep(1000); } catch (InterruptedException e1) { e1.printStackTrace(); } System.out.println("主线程在执行任务"); try { System.out.println("task运行结果"+result.get()); } catch (InterruptedException e) { e.printStackTrace(); } catch (ExecutionException e) { e.printStackTrace(); } System.out.println("所有任务执行完毕"); } } class Task implements Callable<ArrayList>{ @Override public ArrayList call() throws Exception { System.out.println("子线程在进行计算"); Thread.sleep(3000); return new ArrayList(); } }
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