java阅读器与流 [英] java reader vs. stream

问题描述

我正在阅读有关Java I / O的内容，并发现了一些有趣的领域，如流，读者等。

  InputStream input = new的FileInputStream（ 输入file.txt的）; 
 int data = input.read（）; 
 while（data！= -1）{
 data = input.read（）; 
} 
  

我可以通过如下使用读者来做同样的事情：

  Reader reader = new FileReader（input-file.txt）; 
 int data = reader.read（）; 
 while（data！= -1）{
 char dataChar =（char）data; 
 data = reader.read（）; 
} 
  

据我所知，Streams用于从连续流动的数据中检索输入。 / p>

现在我对Streams&和读者;如果我们用缓冲的阅读器包装流 - 它是如何打破线条的，因为流是一个不断流动的东西。

我找到了一些参考网站，如这个网站。但我无法理解其中的差异。

请有人可以帮我理解吗？

解决方案

读者要读取具有特定字符编码的文本数据（ UTF-8，ISO等..）

而另一方面，流是二进制数据。

它们的工作方式相同，但父类不同。

简而言之，如果您必须读取二进制数据并将其保存在某处，请使用流。

如果你必须阅读特定编码的文本，然后使用它，然后使用读者。

希望这个答案。

I was reading about Java I/O and found some interesting areas like streams, readers etc.

 InputStream input = new FileInputStream("input-file.txt");
 int data = input.read();
 while(data != -1){
   data = input.read();
 }

I can do the same thing by using Readers as follows:

Reader reader = new FileReader("input-file.txt");
 int data = reader.read();
 while(data != -1){
     char dataChar = (char) data;
     data = reader.read();
 }

As I know, Streams are used to retrieve input from continuously flowing data.

Now I am confused with the difference between Streams & readers; and if we wraps the stream with a buffered reader - how it break lines, since stream is a continuously flowing thing.

I found some reference sites like this site. But I can't understand the difference.

Please can someone please help me to understand?

解决方案

Readers are to read text data with particular character encoding (UTF-8, ISO etc..)

while on the other hand, streams are binary data.

They work same but there parent classes are different.

in a nutshell, if you have to read binary data and save it somewhere, use stream.

If you have to read text in a particular encoding and then play with it, then use readers.

Hope this answers.

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