Cannot create file with Non-latin characters- I/O

Question

I'm trying to create a file w/ Greek (or any other non-latin) characters ... for use in a RegEx demo.
I can't seem to create the characters. I'm thinking I'm doing something wrong w/ IO.
The code follows. Any insight would be appreciated. - Thanks
import java.util.regex.*;
import java.io.*;
public class GreekChars{
     public static void main(String [ ] args ) throws Exception{
          int c;
          createInputFile();
//          String input = new BufferedReader(new FileReader("GreekChars.txt")).readLine();
//          System.out.println(input);
          FileReader fr = new FileReader("GreekChars.txt");
          while( (c = fr.read()) != -1)
               System.out.println( (char)c  );
     public static void createInputFile() throws Exception {
          PrintStream ps = new PrintStream(new FileOutputStream("GreekChars.txt"));
          ps.println("\u03A9\u0398\u03A0\u03A3"); // omega,theta,pi,sigma
          System.out.println("\u03A9\u0398\u03A0\u03A3"); // omega,theta,pi,sigma
          ps.flush();
          ps.close();
          FileWriter fw = new FileWriter("GreekChars.txt");
          fw.write("\u03A9\u0398\u03A0\u03A3",0,4);
          fw.flush();
          fw.close();
// using a printstream to create file ... and BufferedReader to read
C:> java GreekChars
// using a Filewriter to create files  .. and FileReader to read
C:> java GreekChars
*/

Answer 1

Construct your file writer using a unicode format. If
you don't then the file is written using the platform
"default" format -probably ascii.
example:
FileWriter fw = new FileWriter("GreekChars.txt",
"UTF-8");I don't know what version of FileWriter you are using, but not that I know of take two string parameters. You should try checking the API before trying to help someone, instead of just making things up.
To the OP:
The proper way to produce a file in UTF-8 format would be this:
OutputStreamWriter writer = new OutputStreamWriter(new FileOutputStream("filename"), "UTF-8");Then to read the file, you would use:
InputStreamReader reader = new InputStreamReader(new FileInputStream("filename"), "UTF-8");