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InputStreamReader

abalfazl hossein
Ranch Hand

Joined: Sep 06, 2007
Posts: 635


I want to read mytext.txt line by line, As string, Without using any buffer class or buffer array. How to do that?

Rob Spoor
Sheriff

Joined: Oct 27, 2005
Posts: 19651
    
  18

What is the indication for a new line? If you can answer that question, simply read the characters until you reach that indication.


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Campbell Ritchie
Sheriff

Joined: Oct 13, 2005
Posts: 37970
    
  22
Use a FileReader rather than an input stream for a text file.
Rob Spoor
Sheriff

Joined: Oct 27, 2005
Posts: 19651
    
  18

I disagree. FileReader uses the system encoding; this is the proper way to read from a file using a specific encoding, in this case UTF8.

In fact, FileReader extends InputStreamReader; its constructors each call super(new FileInputStream(arg)) where arg is the argument to the constructor.
Campbell Ritchie
Sheriff

Joined: Oct 13, 2005
Posts: 37970
    
  22
Agree: Rob is right.
Campbell Ritchie
Sheriff

Joined: Oct 13, 2005
Posts: 37970
    
  22
. . . but I don't think it's "UTF8". I think it's "UTF-8", but you would have to check carefully, maybe here.
Rob Spoor
Sheriff

Joined: Oct 27, 2005
Posts: 19651
    
  18

In Java you can use both for charsets. One is an alias for the other, but I can't remember which way around it is.
Kurosaki Ichigo
Greenhorn

Joined: Dec 31, 2010
Posts: 10
i am not sure why, but why can't you use the Scanner?

Campbell Ritchie
Sheriff

Joined: Oct 13, 2005
Posts: 37970
    
  22
Rob Prime wrote:In Java you can use both for charsets. One is an alias for the other, but I can't remember which way around it is.
Thank you. Wasn't certain about that. I think the official name is UTF-8, so UTF8 would be the alias.
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: InputStreamReader
 
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