Problem in showing chinese char from a Unicode based text file [*.txt]

Question

Hi All!
There are some chinese characters stored in a text file [*.txt]. I'm using "Arial Unicode MS" font to show chinese in text file. The text file is showing chinese charatcres. But when I read this file and want to show each line of chinese characters. My program is showing some garbage. Here is my sample code:
//arg[0] is a unicode text file name
UIManager.put("OptionPane.messageFont", new Font("Arial Unicode MS", Font.PLAIN, 11));
String chinesesample = "\u4eac \u5582";
//this message box is showing chinese
JOptionPane.showMessageDialog(null, "Chinese Text..: " + chinesesample);
BufferedReader obj_line = new BufferedReader(new FileReader(args[0]),16);
    String data = null;
    while (obj_line.ready()) {
      data = new String(obj_line.readLine().getBytes("Unicode"));
      obj_line.readLine();
      JOptionPane.showMessageDialog(null, data);
    }But this code is not showing the exact chinese characters stored in text file.
Regards,
KS

Answer 1

FileReader does not support setting a charset:
http://java.sun.com/j2se/1.5.0/docs/api/java/io/FileReader.html
Convenience class for reading character files. The constructors of this
class assume that the default character encoding and the default byte-
buffer size are appropriate. To specify these values yourself, construct
an InputStreamReader on a FileInputStream.
So our BufferedReader should be constructed from InputStreamReader on a FileInputStream.
               BufferedReader br = new BufferedReader(
                      new InputStreamReader(new FileInputStream("out.txt"), "UTF8"));Here is an example:
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
// import java.io.FileReader; // no need for this
import java.io.InputStreamReader;
import javax.swing.JOptionPane;
public class DocumentRenderer{
     public static void main(String[] args){
          try{
               String chinesesample = "\u4eac \u5582\n";
               System.out.print(chinesesample);
               FileOutputStream fo = new FileOutputStream(new File("out.txt"));
               fo.write(chinesesample.getBytes("UTF8"));
               fo.close();
               BufferedReader br = new BufferedReader(
                      new InputStreamReader(new FileInputStream("out.txt"), "UTF8"));
               JOptionPane.showMessageDialog(null, "Chinese Text..: " + chinesesample);
               chinesesample = br.readLine();
               JOptionPane.showMessageDialog(null, "Chinese Text..: " + chinesesample);
               fo = new FileOutputStream(new File("out.txt"));
               fo.write(chinesesample.getBytes("UTF8"));
               fo.close();
          }catch(Exception e){
}