异常和错误之间的差异

问题描述

我正在尝试更多地了解基本Java和不同类型的Throwables，有人能告诉我异常和错误之间的区别吗？

I'm trying to learn more about basic Java and the different types of Throwables, can someone let me know the differences between Exceptions and Errors?

推荐答案

不应该捕获或处理错误（除了最罕见的情况）。例外是异常处理的基础。 解释得很好：

Errors should not be caught or handled (except in the rarest of cases). Exceptions are the bread and butter of exception handling. The Javadoc explains it well:

查看的一些子类错误，接受他们的一些JavaDoc评论：

Look at a few of the subclasses of Error, taking some of their JavaDoc comments:

• AnnotationFormatError - 当注释解析器尝试从类文件中读取注释并确定注释格式错误时抛出。


• AssertionError - 抛出表示断言已失败。


• LinkageError - LinkageError的子类表示某个类对另一个类有一定的依赖性;然而，后一类在前一类的编译后发生了不相同的变化。


• VirtualMachineError - 抛出此异常表示Java虚拟机已损坏或已耗尽其继续运行所需的资源。

• AnnotationFormatError - Thrown when the annotation parser attempts to read an annotation from a class file and determines that the annotation is malformed.
• AssertionError - Thrown to indicate that an assertion has failed.
• LinkageError - Subclasses of LinkageError indicate that a class has some dependency on another class; however, the latter class has incompatibly changed after the compilation of the former class.
• VirtualMachineError - Thrown to indicate that the Java Virtual Machine is broken or has run out of resources necessary for it to continue operating.

实际上有三个重要的子类别 Throwable ：

There are really three important subcategories of Throwable:

• 错误 - 大多数应用程序应该崩溃而不是试图解决问题，


• 未经检查的异常（又名 RuntimeException ） - 通常是编程错误，例如 NullPointerException 或非法论据。应用程序有时可以处理或从此 Throwable 类别中恢复 - 或者至少在Thread的 run（）方法中捕获它，记录投诉，然后继续运行。


• 检查异常（又名其他所有内容） - 应用程序应能够捕获并有意义地对其余部分执行某些操作，例如 FileNotFoundException 和 TimeoutException ...

• Error - Something severe enough has gone wrong the most applications should crash rather than try to handle the problem,
• Unchecked Exception (aka RuntimeException) - Very often a programming error such as a NullPointerException or an illegal argument. Applications can sometimes handle or recover from this Throwable category -- or at least catch it at the Thread's run() method, log the complaint, and continue running.
• Checked Exception (aka Everything else) - Applications are expected to be able to catch and meaningfully do something with the rest, such as FileNotFoundException and TimeoutException...

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