执行者与线程(Executors vs threads)

 我正在尝试运行以下代码片段： 
 
public static void main(String[] args){
    ScheduledExecutorService service = new ScheduledThreadPoolExecutor(2);

    Runnable r = new Runnable() {
        @Override
        public void run() {
            throw new RuntimeException();
        }
    };
    service.execute(r );
    ScheduledFuture<?> schedule = service.schedule(r, 0, TimeUnit.SECONDS);
    new Thread(r).run();
}
 
 关于以上问题，我有以下问题： 
 
 
 
 有什么方法可以捕捉并回应执行者线程上发生的异常？ 
 
 
 为什么创建的线程中的异常显式传播到主线程，但是使用executor服务执行的两个执行不会传播该错误？ 这个错误怎么能被发现？ 
 
 
 编辑：想到另一个问题： 
 
 
 
 我如何停止一个给定的定期任务，比如在N次重复或N分钟之后呢？ 
 

I am trying to run the following piece of code:
 
public static void main(String[] args){
    ScheduledExecutorService service = new ScheduledThreadPoolExecutor(2);

    Runnable r = new Runnable() {
        @Override
        public void run() {
            throw new RuntimeException();
        }
    };
    service.execute(r );
    ScheduledFuture<?> schedule = service.schedule(r, 0, TimeUnit.SECONDS);
    new Thread(r).run();
}
 
Regarding the above I have the following questions:
 
 
 
Is there any way to catch and respond to exceptions happening on the executor's thread?
 
 
Why is the exception from the thread created explicitly propagated to the main thread, but both executions using the executor service does not propagate that error? How can this error ever be discovered?
 
 
EDIT: One further question came to mind:
 
 
 
How can i stop a given periodic task that I schedule, let's say after N repeats or N minutes?
 

原文：https://stackoverflow.com/questions/12809185