确实正如 马士兵 所说的那样，其实就 两种 一种字符流(InputStream OutputStream)，一种字节流(各种Reader Writer)，多归纳多总结就好了。。
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Otherwise, the original character is placed in the output stream, and the input stream is reset to the original position.
否则，将原来的字符放到输出流中，并且将输入流重置到原始位置。
The output stream of the socket becomes the input stream to the server application and vice-versa.
套接字的输出流将成为服务器应用程序的输入流，反之亦然。
Along similar lines as Listing 7 (which shows a client sending its body through an output stream), the client would read the server response using an input stream.
用类似于清单7中的那些代码(在那里客户机通过一个输出流发送其正文)，客户机使用一个输入流读取服务器响应。
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