Why couldn't I get the contents of the a file ?

Question

I have a txt file,I want to disply it,but all can I get is chaos.I change the file from ANSI to Unicode,It didn't work too.
why?
by the way,I add a "'# " at the tail of the file;
how can I get the correct content of the file,
the code is:
try{
FileInputStream fs=new FileInputStream("test2.txt");
DataInputStream ds=new DataInputStream(fs);
char token;
StringBuffer dd=new StringBuffer();
while((token=ds.readChar())!='#'){
dd.append(token);
System.out.println(dd.toString());
catch(IOException e){}

Answer 1

to make your life easy, this is a utility class i keep around...
* Open.java
* Created on 25 May 2001, 21:02
package com.moss.io;
import java.io.*;
import java.net.URL;
import java.net.MalformedURLException;
* @author  David Moss
* @version 1
public class Open extends java.lang.Object
     * Opens a file
     * @param fileName The file to open
     * @return The text string stored in <code>fileName</code>
    public static String Open(File fileName)
        String s = "";
        if (fileName.equals(null))
            return null;
        try
            String line;
            FileReader fin = new FileReader(fileName);
            BufferedReader bin = new BufferedReader(fin);
            while((line = bin.readLine()) != null)
                s += line + "\r\n";
            bin.close();
            return s;
        catch (Exception e)
            e.printStackTrace();
            return null;
        return null;
     * Opens a file
     * @param fileName The file to open
     * @return The text string stored in <code>fileName</code>
    public static String Open(URL fileName)
        return Open(new File(fileName.getFile()));
     * Opens a file
     * @param fileName The file to open
     * @param url True if the <code>fileName</code> string is represented as a URL,
     * false if its represented as a File
     * @return The text string stored in <code>fileName</code>
    public static String Open(String fileName, boolean url)
        if (url)
            try
                return Open(new File(new URL(fileName).getFile()));
            }catch (MalformedURLException e)
                e.printStackTrace();
                return null;
        else return Open(new File(fileName));
}you will probably want the exceptions thrown and the code cleande up because it is pretty bad as it is at the moment and i just can not be arsed to clean it for you.
have fun.