Need to read Unicode in a file

Hi,
My need to read Unicode from a file (on a Windows box) is due to the fact my software is used in different countries and on different keyboard naturally. All the users are not computer literate but, like me, they are all lazy and want to put their username and password in a config file my application reads. If their username or password contain Unicode characters I have a problem reading.
They are simple users that I would like to advise them to open the config file using Windows Notepad, then type in their username and password, and save the file as Unicode. Notepad has four ways to save a file, ANSI, Unicode, Unicode big endian, and UTF-8 (I've tried them all except ANSI of course). Saving a file in a different format is as complicated as I would like it to get for them, some will have trouble even with this.
I read the file like so:
BufferedReader rdr =
    new BufferedReader(
        new InputStreamReader(new FileInputStream(file_name), "UTF-16"));
String line;
while ((line = rdr.readLine()) != null) {
    String[] pieces = line.split("[=:]");
    if (pieces.length == 2) {
        if (pieces[0].equals("PASSWORD")) {
            byte[] possibleUnicode = pieces[1].getBytes("various encodings");
            pieces[1] = new String(possibleUnicode, "various encodings");
        propertyTable.setProperty(pieces[0], pieces[1]);
}All reading is perfect except for a username or password which can contain a real multi-byte character. I have used many variations of converting the string I get into a byte[] using string_in.getBytes("various encodings tried") and then back to a string but nothing has worked.
I tried a regular FileReader to a BufferedReader and that didn't work. I tried a FileInputStreamto a DataInputStream and that didn't work. I accomplished the most with what I described above, FileInputStream to InputStreamReader to BufferedReader.
Does anyone know how to read Unicode in a file on a Windows file system?
hopi

I have used the byte conversion technique before
successfully when I loaded a set of properties
from a URL openStream(). The properties load()
method takes an InputStream and assumes ISO-8859-1
so I converted the bytes from ISO-8859-1 to UTF-8.
Garbage characters were cleared up perfectly.I think you just got lucky that time. For characters up to U+007F, the UTF-8 encoding is the same as ISO-8859-1 (and most other encodings, for that matter). Characters in the range U+0080 to U+00FF will be encoded with one byte in ISO-8859-1, and with two bytes in UTF-8. In most cases, each of the two bytes in the UTF-8 representation will have values that are valid in ISO-8859-1. The decoded characters will be incorrect (and there will be too many of them), but they effectively preserve the original byte values, making it possible for you to re-encode the characters and then decode them correctly. But there's a big gap in the middle where the UTF-8 bytes produce garbage when decoded as IS)-8859-1. Run the included program to see what I mean.
I don't know what's going wrong with your application, but I do know that changing the encoding retroactively is not the solution. I also think you're right about asking users save files in a certain encoding. Considering how much trouble programmers have with this stuff, it's definitely too much to ask of users.
import java.awt.Font;
import javax.swing.*;
public class Test
public static void main(String... args) throws Exception
    JTextArea ta = new JTextArea();
    ta.setFont(new Font("monospaced", Font.PLAIN, 14));
    JFrame frame = new JFrame();
    frame.add(new JScrollPane(ta));
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    StringBuilder sb = new StringBuilder();
    for (int i = 0xA0; i <= 0xFF; i++)
      sb.append((char)i);
    String str1 = sb.toString();
    byte[] utfBytes = str1.getBytes("UTF-8");
    String str2 = new String(utfBytes, "ISO-8859-1");
    for (int i = 0, j = 0; i < str1.length(); i++, j += 2)
      char ch = str1.charAt(i);
      byte b1 = utfBytes[j];
      byte b2 = utfBytes[j+1];
      String s1 = Integer.toBinaryString(b1 & 0xFF);
      String s2 = Integer.toBinaryString(b2 & 0xFF);
      char ch1 = str2.charAt(j);
      char ch2 = str2.charAt(j+1);
      ta.append(String.format("%2c%10s%10s%3x%3x%3c%3c\n",
          ch, s1, s2, b1, b2, ch1, ch2));
    frame.setSize(400, 700);
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);
}

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I need to read from a text file. When the token encounters a particular word (command) I need to read the next line and perform some actions. However, this part is working but it is repeating the values again and again until it encounters the next particular word (command). Hope that someone will help me out, as always when I posted a problem in these forums.
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Thanks for your interest. Please ignore SetOperations class, it is just the class containing the methods and it works correctly since I checked it without reading from a text file. I marked the part where I think lies my problem in class SetTestOperations.
The information in the text file is as follows:
membera
Hillman
membera
Skoda
membera
Honda
membera
Toyota
and the result is:
[0] Hillman
Number of set members: 1
[0] Hillman
[1] Skoda
Number of set members: 2
[0] Hillman
[1] Skoda
[2] Honda
Number of set members: 3
[0] Hillman
[1] Skoda
[2] Honda
[3] Toyota
Number of set members: 4
instead of just one set:
[0] Hillman
[1] Skoda
[2] Honda
[3] Toyota
Number of set members: 4
Hope it is easier to understand like this.
Regards
Marco
I need to read from a text file. When the token
encounters a particular word (command) I need to read
the next line and perform some actions. However, this
part is working but it is repeating the values again
and again until it encounters the next particular
word (command). Hope that someone will help me out,
as always when I posted a problem in these forums.
SetOperations class - contains the set
methods
// Imported
packages.=============================================
===========
import java.util.Vector;
import java.util.Iterator;
// Public class
SetOperations.========================================
=======
public class SetOperations
// Instance
e
variables.============================================
=======
private Vector v = null; // Creates new instance of
f vector.
     protected int memberCount;
Constructor.==========================================
================
     public SetOperations()
          v = new Vector();
     } // end constructor.
// Method
d
isMember.=============================================
=========
* Checks whether the element is already a member of
f the set.
     * @return True if Vector v contains Object member.
     public boolean isMember(Object member)
if (member != null) // only if Object member is not
ot null.
return v.contains(member); // returns true if
if vector already contains member.
          else
return false; // returns false if vector does not
not contain member.
     } // end public boolean isMember(Object member).
// Method
d
addMember.============================================
=========
     * Adds a member to the set.
     * @return Adds Object member to Vector v.
     public void addMember(Object member)
//if (! v.contains(member)) // only if element is
is not already a member.
if (isMember(member) == false) // only if element
nt is not already a member.
               v.add(member); // adds a member.
     } // end public void addMember(Object member).
// Method
d
countMember.==========================================
=========
* Returns the number of members present in the
e vector.
     * @return Number of elements present in the vector.
     public int countMember()
          return v.size();
     } // end public int countMember().
// Method
d
isSetEmpty.===========================================
=========
     * Returns true if set is empty.
* @return True if no elements are present in Vector
r v.
     public boolean isSetEmpty()
return v.size() == 0; // returns 0 if no elements
ts are present in the vector.
     } // end of public boolean isSetEmpty().
// Method
d
printMember.==========================================
=========
     * Displays member/s of the set.
     * @return Prints element/s present in the vector.
     public void printMember()
for (int i = 0; i < v.size(); i++) // iterates
es through present members.
System.out.println("[" + i + "] " + v.get(i)); //
// displays member/s present in the vector.
     } // end of public void printMember().
} // end public class SetOperations.
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and implements the set operations
// Imported
packages.=============================================
===========
import java.util.*;
import java.io.*;
// Public class
SetTestLauncher.======================================
=======
public class SetTestLauncher
// Main method public static void main(String
g args[]).===================
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displayFile("test.txt"); // outputs result from
om text file.
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// Instance
ce
variables.============================================
===
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From: "Mark E Smith" <[email protected]>
Date: April 9, 2007 11:28:19 AM PST
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Subject: FW: RFI Research Topic Up-date
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From: "Mark E Smith" <[email protected]>
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count = 4
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From: "Mark E Smith" <[email protected]>
Date: April 9, 2007 11:28:19 AM PST
To: <[email protected]>
Subject: FW: RFI Research Topic Up-date
Hi, Dr. Ulrich.? Are there any authors and titles of JME that you could recommend for my reading??
Thanks.? Mark
From: Joe Greene [mailto:[email protected]]
Sent: Sat 4/7/2007 4:10 PM
To: Mark E Smith
Subject: RE: RFI Research Topic Up-date
Hi Mark,
Thanks for the update. I have met Dr. Ulrich on several occasions ? he is a great guy!
Dr. Hammer and I also have the same advisor from graduate school. He did his Masters with my PhD advisor at Poly-Tech. We have also met many times in the past. I think you will be in good hands down there.
It seems clear that you need to start learning JME and can perhaps forget about Windows Mobile. JME represents a smaller footprint for Java that contains support for various APIs for mobile functionality. I do not own any JME books, but a search on Amazon.com turned up what looks like several good ones.
Best wishes
Joe
---------------------------------------------------- Joe Greene, Ph.D. DCSIT it.sdu.com [email protected] http://www.greene.org
From: Mark E Smith [mailto:[email protected]]  Sent: Saturday, April 07, 2007 9:30 AM To: [email protected] Subject: RFI Research Topic Up-date
Welcome to the conversation, Dr.Greene.? This is where we are so far.? I would appreciate your thoughts.
Thanks.? Mark
From: "Mark E Smith" <[email protected]>
Date: May 26, 2007 11:14:12 AM PST
To: <>
Subject: Batting Practice Sportsphere
Saturday, May 26, 2007
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Date: May 30, 2007 11:53:45 PM PST
To: <[email protected]>
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Hi, Dr. Ulrich.? Attached are a few notes from my research of the project docs that you sent me.? I am looking forward to our 3p meeting.??Thanks.? Mark?
From: "Mark E Smith" <[email protected]>
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To: <[email protected]>
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Hi, Dr. Ulrich.? Pine-tar.? What do you think?? Would you please show me how to pitch sliders and splitters into this so I can study the features in detail?? Thanks.? Mark
P.S.
As you can see, my code reads the particular sequence of 4 selected fields, From, Date, To, and Subject,
out of an email that contains that specific sequence of 4 fields then I would like to place them in a text file
called WriteANSIencodedPlainTextSelectedFields.txt, and then print the number of emails in the document.
Instead of the desired output I would like to write to the file WriteANSIencodedPlainTextSelectedFields.txt; I am only getting this:
Count = 0
What is my problem???
Thanks,
Mike

What is my problem???Obviously one of your conditions not being true...
What does your question have to do with the thread's subject, btw?

Reading unicode file using pure C++??

Hi Guys,
I need help reading a unicode/utf8 file using C/C++. Any pointers or sample code will be of great help.
Thanks
Gulshan

See sections 20.2 and 20.3 of "The C++ Programming Language" 3rd ed. - by Bjarne Stroutrup.
I'll go out on a limb and naively state that using wstring rather than string will take you a long way towards solving your problem, but you might have to play around with char_traits. The general usage of wstring should be identical to string, so I'm sure you can find many examples.
... Dave

Read unicode file using java

Hi all,
I'm fairly new to java. In my program i need to read a Unicode file. (When i did it normal way it shows only "?" s for all the non English characters).
can any one help me? (It better u can sent a simple example too)
Thanks.
regards,
wijitha

Use an InputStreamReader.

Unable to properly read a binary .xls file in a unicode system.

Hello,
We are currently upgrading to ecc 6 unicode
from a non unicode ecc5 system and we have
found several problems reading files for
Excel in place (sap office intergration).
We have an excel file with macros scripted
within it and it, parts of the file are in
hebrew.
We use open dataset for input command to
provide the data to the sap integration
methods.
In ecc5, no additional parameters were
needed for the command.
In the unicode system, the file isn't read
properly even when providing codepage for
the file in legacy binary mode (I tried '1800' and '1810' for hebrew).
When compared to a non unicode system, it seems
that some of the binary data is missing and some
characters are missing and instead appear
like squares.
this leads to the file not being read at
all.
Is there any method to read the file with
the characters in it properly , or force it
to use the non unicode read method?
Best regards, Yoav

Try the Acrobat forum; this is the Adobe Reader forum.

I need to read data from a text file and display it in a datagrid.how can this be done..please help

hey ppl
i have a datagrid in my form.i need to read input(fields..sort of a database) from a text file and display its contents in the datagrid.
how can this be done.. and also after every few seconds reading event should be re executed.. and that the contents of the datagrid will keep changing as per the changes in the file...
please help as this is urgent and important.. if possible please provide me with an example code as i am completely new to flex...
thanks.....

It's not possible to read from a file without using classes from the core API*. You'll have to get clarification from your instructor as to which classes are and are not allowed.
[http://java.sun.com/docs/books/tutorial/essential/io/]
*Unless you write a bunch of JNI code to replicate what the java.io classes are doing.

Need to read data from a text file

I need to read data from a text file and create my own hash table out of it. I'm not allowed to use the built in Java class, so how would I go implementing my own reading method and hash table class?

It's not possible to read from a file without using classes from the core API*. You'll have to get clarification from your instructor as to which classes are and are not allowed.
[http://java.sun.com/docs/books/tutorial/essential/io/]
*Unless you write a bunch of JNI code to replicate what the java.io classes are doing.

Need to read Unicode in a file

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