从主线程休眠是抛出InterruptedException [英] sleep from main thread is throwing InterruptedException

问题描述

我有执行的主线程产生新线程。在main（）的主要执行线程中，我调用 Thread.sleep（）。我何时才能获得未处理的异常类型 InterruptedException ？

I have the main thread of execution which spawns new threads. In the main thread of execution in main() I am calling Thread.sleep(). When do I get an Unhandled exception type InterruptedException?.

我不确定为什么会得到这个。我认为这是因为我需要对主线程的引用所以我继续通过 Thread.currentThread（）来引用它。

I am unsure of why am I getting this. I thought this was because I needed a reference to the main thread so I went ahead and made a reference to it via Thread.currentThread().

这不是线程睡眠的方法吗？我需要做的是让主线程等待/睡眠/延迟，直到它再次需要工作。

Is this not the way to have the thread sleep? What I need to do is have the main thread wait/sleep/delay till it does it required work again.

推荐答案

您看到的是编译错误，因为您没有处理已检查的异常（在这种情况下InterruptedException 正确。处理意味着执行以下操作之一：

What you see is a compilation error, due to the fact that you didn't handle the checked exception (InterruptedException in this case) properly. Handling means doing one of the following:

1）将方法声明为会抛出InterruptedException ，因此需要调用者处理异常

1) Declaring the method as throws InterruptedException, thus requiring the caller to handle the exception

2）用抓住它{}} catch（..）{..} 阻止。例如：

try {
    Thread.sleep(1500);
} catch(InterruptedException e) {
    System.out.println("got interrupted!");
}

使用InterruptedException 指示当前线程在执行某些阻塞操作时被外部线程中断（例如可中断IO，等待，休眠）

InterruptedException is used to indicate that the current thread has been interrupted by an external thread while it was performing some blocking operation (e.g. interruptible IO, wait, sleep)

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