FileChannel的缺点-> BufferedReader->读者 [英] Disadvantage of FileChannel -> BufferedReader -> Reader

问题描述

FileChannel将比BufferedReader快，BufferedReader将比Reader快，因为FileChannel和BufferedReader切断了一些立即步骤来接收数据.

FileChannel will faster than BufferedReader, BufferedReader will more faster than Reader because FileChannel and BufferedReader has cut off some itermediate steps to receive data.

我的问题是:优势是显而易见的，但是我看不到网络上有任何消息说它的劣势. (从FileChannel到BufferedReader，BufferedReader到Reader).当我们中断两者之间的中间步骤时，会有什么问题.

My question is : the advantage is obvious, but I don't see any source on web say about its disadvantage. (of FileChannel to BufferedReader, BufferedReader to Reader). What a problem when we cut off intermediate steps between.

所以，谁能教我.

@:而且，对于Output也是同样的问题.请告诉我这些不利之处.

@:And, the same question for Output, too. Please tell me what disadvantage of those.

谢谢:)

推荐答案

在使用BufferedWriter(或任何其他缓冲的输出流)时，一个潜在的缺点是程序在缓冲区/缓冲区中保存了一些数据.内存，然后再将其写入输出设备.如果在程序崩溃的情况下无法承受丢失任何数据的麻烦，则可以考虑不要使用BufferedWriter/BufferedOutputStream.

One potential disadvantage when using a BufferedWriter (or any of the other buffered output streams) is the fact that your program holds some data in the buffer/in memory before it is written to the output device. If you cannot afford to lose any data in case of a program crash then you may want consider not to use a BufferedWriter/BufferedOutputStream.

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