readUTF not working

[abhishek kunal]

i am reading char data from a text file in utf format.....
here is the code

 
File file = new File("C:\\MyFile.txt");
fis = new FileInputStream(file);//Assuming all three have been declared as instance members
bis = new BufferedInputStream(fis);
dis = new DataInputStream(bis);
String read;
 while (dis.available() != 0) {

      
         read = dis.readUTF();
        System.out.println(read);

     
      }

   

if i don't use readUTF (i used readLine in order to check by the way), then there is no problem , it goes OK, but when i use readUTF, the it throws EOFException.....why is that??


here is output

java.io.EOFException
at java.io.DataInputStream.readFully(DataInputStream.java:180)
at java.io.DataInputStream.readUTF(DataInputStream.java:592)
at java.io.DataInputStream.readUTF(DataInputStream.java:547)
at mainclient.FileInput.main(FileInput.java:49)
BUILD SUCCESSFUL (total time: 1 second)

please help....

[Jesper de Jong]

Class DataInputStream is the wrong thing to use when reading from a text file. As the documentation says, class DataInputStream is meant for reading primitive Java data types from an underlying input stream, and readUTF() uses some kind of modified UTF-8 format (not the standard UTF-8 format).

For reading from text files, you should use a Reader. The various Reader classes that exist in java.io (for example BufferedReader, InputStreamReader, FileReader etc.) take care of converting data from an input stream to text, using a character encoding.

To read a text file in UTF-8 encoding, try this:

File file = new File("C:\\MyFile.txt");
fis = new FileInputStream(file);

isr = new InputStreamReader(fis, "UTF-8");
br = new BufferedReader(isr);

String line;
while ((line = br.readLine()) != null) {
  System.out.println(line);
}