Changing charset on the fly

[Remedy]

Hello,
I have an application currently using a BufferedReader with a default charset. I wish I could edit charset on a fly, while the flow still works. Apparently, this is how my code looks.

InputStream inpustr = new FileInputStream("test.txt") ;
BufferedReader buff1 = new BufferedReader(
        new InputStreamReader(inpustr, charset)
    );
buff1.readLine();
BufferedReader buff2 = new BufferedReader(
        new InputStreamReader(inpustr, charset)
    );
buff2.readLine();

I first get out the first line. Then, I get the end of the line containing the character 8.193e (8kb is + / - buffer size used, according to my estimates). For a writer, it's easier and it works, provided flush after each write. And as a bonus, if you could tell me how to do the same thing with the NIO.

[Zecho]

Hello,
I went through your code, I think you can replace this part of your code

BufferedReader buff2 = new BufferedReader(
new InputStreamReader(inpustr, charset)

By

BufferedReader buff2 = new BufferedReader (
        new InputStreamReader (buff1, charset)
    );

I think this should work in a more better way? Just check it by replacing this code in your code.

[Remedy]

Hello,
By my knowledge no class InputStreamReader is used, InputStream only accepts as input, not the Reader class. And BufferedReader is a subclass of Reader class. There is no equivalent to an InputStreamReader reversed, I hope so. I have the distinct impression that I will have to implement my own version of InputStreamReader, to manage change in charset. Am I going in the correct direction. If I am wrong please guide me.

[Katty]

Hello,
I think he means to say this

BufferedReader buff2 = new BufferedReader( buff1, charset );

and not this

BufferedReader buff2 = new BufferedReader (
new InputStreamReader (buff1, charset)
);

I think you should use it, as it is posted above. I think this is just a mistake in posting the content and nothing else.

[Remedy]

Hi,
It is not possible, only the InputStreamReader plays with charsets. The BufferedReader has two constructors: (Reader) and (Reader, int size). That makes sense, since the Reader return char [] char from [] (except isReadable) InputStream and return the int [] From int []. In java.io.* I have not seen anything approaching your reasoning. That is why I am using the method to make my program work, but unfortunately it is not working successfully yet.

[Modifier]

Hello,
Your problem is that BufferedReader buffer fills it whenever it can. You can perhaps use a PushBackInputStream as follows:

byte[] buf = new byte[512]; / / For you to see the size
String chset1, chset2, string;
StringBuilder tx;
PushBackInputStream in;
int index;

tx = new StringBuilder();
do {
  tx.append(string);
  in.read(buf, 0, Buffer.size);
  string = new String(buf chset1);
  index = string.indexOf("\ n");
} while ( Index == -1);

index + +; / / This is to include \ n in the first charset
tx.append(string.substringing(0, Index));
 
/ / it gets late in the second table charset
in.unread(buf, index buf.size - Index);
string = new String(buf, index buf.size - Index, chset2);
tx.append(string);
 
/ / We read the rest in the second charset
while(in.available != 0) {
  in.read(buf, 0, Buffer.size);
  string = new String(buf chset2);
  tx.append(string);
}

System.out.System.out.println(tx.toString());