java - 为什么ThreadDeath类不称为ThreadDeathError呢？

Question

Java中几乎所有的Error子类在名称中都包含“-Error”后缀，但不包含ThreadDeath。为什么是这样？这使得很难记住它是Error还是Exception的子类。

Answer 1

ThreadDeath的javadocs这样说:

An application should catch instances of this class only if it must clean up after being terminated asynchronously. If ThreadDeath is caught by a method, it is important that it be rethrown so that the thread actually dies.

和

The class ThreadDeath is specifically a subclass of Error rather than Exception, even though it is a "normal occurrence", because many applications catch all occurrences of Exception and then discard the exception.

这是说应用程序应将ThreadDeath与区别于 Exception 和(其他)Error类。
由于应该以不同的方式对待异常，因此使用不适合常规模式的类名称是有意义的。

但是，无论如何这应该具有历史意义。引发此问题的Thread.stop()方法在20年前已被弃用。您的代码不应使用stop()，因此无需将此异常与自身相关。而且你也不应该。