java - 方法忽略异常返回值: FindBugs

Question

为什么以下代码的 findbugs 中出现标题错误。

 boolean isCreated =  folder.mkdirs();

    if (!isCreated) {
        throw new IOException("Folder already exists..!!!");
    }

Answer 1

根据Finds Bug Description.

Method ignores exceptional return value

Method returns a value that is not checked. The return value should be checked since it can indicate an unusual or unexpected function execution.