android throw exception 原理,Android Throw Exception

肖云成

于 2021-05-29 06:47:39 发布

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文章标签： android throw exception 原理

本文探讨了在Java中，如果方法可能抛出异常，即使不捕获也需声明或在finally块中处理。异常应该包含足够的信息，帮助调用者决定是否重试操作或辅助开发者解决问题。建议遵循Java命名规范，如非最终变量和方法名以小写字母开头，避免使用不必要的‘this’关键字。

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It depends; if this.Close() can throw an exception, then it still needs to be declared as being thrown, or caught. Often times this is wrapped up in a small utility method.

It's not mandatory to use a catch, you can simply try/finally.

Regarding return values: methods that exit due to an exception don't have a return value.

Exceptions should encapsulate enough information to either:

allow the caller to do something useful with the exception, e.g., retry the operation, or

assist the developer in understanding the problem and lead him/her to a resolution.

I'd encourage you to follow standard Java naming conventions to avoid confusing readers of your code: non-final variables should begin with a lower-case letter. Method names should also begin with lower-case letters.

Also, you do not need to preface methods (or variables) with this when there is no need to disambiguate the property you're accessing.