处理Java中的运行时异常 [英] Handling Runtime exception in Java

问题描述

我有以下代码

 try{//do something
     }
  catch (Exception e) {
        log.error(e, e);
        if (e instanceof RuntimeException) {
            throw (RuntimeException) e;
        } else {
            throw new RuntimeException(e);
        }
    }

findbugs stataic分析工具会在此引发此警告

the findbugs stataic analysis tool throws this warning on it

instanceof将始终为methodX中的所有非空值返回true，因为所有RuntimeException都是RuntimeException的实例

instanceof will always return true for all nonnull values in methodX, since all RuntimeException are instances of RuntimeException

我不明白的是它的异常被抓住而不是RuntimeException，所以为什么这个警告？

what i dont understand is that its Exception which is being caught and not the RuntimeException, so why this warning ?

推荐答案

您还可以尝试以下代码。这将更好地阅读和维护。

You could also try following code. This will be better to read and maintain.

try{//do something
}
catch (RuntimeException e) {
    throw e;
} 
catch (Exception e) {
    throw new RuntimeException(e);
}

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