java.lang.RuntimeException 和 java.lang.Exception 的区别 [英] Difference between java.lang.RuntimeException and java.lang.Exception

问题描述

谁能解释一下java.lang.RuntimeException 和java.lang.Exception 的区别?如果我创建自己的异常，如何决定扩展哪一个?

Someone please explain the difference between java.lang.RuntimeException and java.lang.Exception? How do I decide which one to extend if I create my own exception?

推荐答案

通常RuntimeExceptions 是可以通过编程方式防止的异常.例如 NullPointerException、ArrayIndexOutOfBoundException.如果在调用任何方法之前检查 null，NullPointerException 将永远不会发生.同样，如果您先检查索引，ArrayIndexOutOfBoundException 永远不会发生.RuntimeException 没有被编译器检查，所以它是干净的代码.

Generally RuntimeExceptions are exceptions that can be prevented programmatically. E.g NullPointerException, ArrayIndexOutOfBoundException. If you check for null before calling any method, NullPointerException would never occur. Similarly ArrayIndexOutOfBoundException would never occur if you check the index first. RuntimeException are not checked by the compiler, so it is clean code.

EDIT :现在人们喜欢 RuntimeException 因为它产生的代码干净.这完全是个人选择.

EDIT : These days people favor RuntimeException because the clean code it produces. It is totally a personal choice.

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