我是否需要关闭()FileReader和BufferedReader? [英] Do I need to close() both FileReader and BufferedReader?

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问题描述

我正在使用围绕FileReader的BufferedReader读取本地文件:

I'm reading a local file using a BufferedReader wrapped around a FileReader:

BufferedReader reader = new BufferedReader(new FileReader(fileName));
// read the file
// (error handling snipped)
reader.close();

我需要 close() FileReader ,或者包装器会处理吗?
我见过人们这样做的代码:

Do I need to close() the FileReader as well, or will the wrapper handle that? I've seen code where people do something like this:

FileReader fReader = new FileReader(fileName);
BufferedReader bReader = new BufferedReader(fReader);
// read the file
// (error handling snipped)
bReader.close();
fReader.close();

这个方法是从servlet调用的,我想确保不离开任何句柄都打开。

This method is called from a servlet, and I'd like to make sure I don't leave any handles open.

推荐答案

没有。

BufferedReader.close()

关闭流到javadoc for BufferedReader InputStreamReader

closes the stream according to javadoc for BufferedReader and InputStreamReader

以及

FileReader.close()

确实。

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