Java RandomAccessFile与DataInputStream进行字节操作 [英] Java RandomAccessFile vs. DataInputStream for byte operations

问题描述

我需要从文件中读取字节。

使用 RandomAccessFile 之间是否有区别（例如效率，内存，运行时，复杂性和代码的不雅感） $ c $>使用 DataInputStream ？

我使用的唯一方法是readByte（）。

对于另一个方向，同样的情况是， RandomAccessFile 和 DataOutputStream 如果所有需要的是writeByte（）？

（事实上， RandomAccessFile 是双向的不计数，读写没有连接，不能分享）

是否还有其他更适合这种阅读和写作的对象？

你只是在进行顺序访问，它们本身就是等价的;然而围绕 FileInputStream 的 BufferedInputStream 周围的 DataInputStream 将会是比 RandomAccessFile 更有效率。

I need to read bytes from a file.
Is there a difference (e.g. efficiency, memory, runtime, complexity and inelegance of code) between using RandomAccessFile and using DataInputStream?

The only method I use is readByte().

Similarly for the other direction, is there a difference between RandomAccessFile and DataOutputStream if all that is needed is writeByte()?
(The fact that RandomAccessFile is bidirectional doesn't count, the reading and writing are not connected and cannot share it).

Is there any other object that would better suit that kind of reading and writing?

解决方案

If you are only doing sequential access, by themselves they are essentially equivalent; however a DataInputStream around a BufferedInputStream around a FileInputStream will be considerably more efficient than a RandomAccessFile.

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