Write Unicode Characters, e.g. \u009A
Hello,
I'm trying to write a unicode characters (e.g. \u009A) to a file. I know that this represents a control character but I'm using it for a .pcl file which interprets it as 154. Unfortunaltely, the java output is 63 (\u003F). Can anyone help me with this? I'm just using a simple FileOutputStream to write to a file.
Regards,
Alex
It sounds like you are using the platform's default character encoding. The one on Windows in western locale doesn't support control characters U+0080 � U+009F, so to produce the bytes you want you must use another encoding, for example ISO-8859-1.
Here is an example on how to use ISO-8859-1 to write a file:
http://www.exampledepot.com/egs/java.io/WriteISOLatin1.html
Edit: Never mind that. You say you are using FileOutputStream. How can you write characters if you use a stream that can only write bytes?
Similar Messages
-
Generate and Write unicode characters to file
The genearted characters looks OK (up to x00FF) but after writing them to file those characters and their values are different. Also the characters after 0x00FF are not coming proper.
Any idea?
Solved!
Go to Solution.You should probably give this page a thorough read if you are intending on using Unicode in your application. Here is a relevant excerpt:
ASCII technically only defines a 7-bit value and can accordingly represent 128 different characters including control characters such as newline (0x0A) and carriage return (0x0D). However ASCII characters in most applications including LabVIEW are stored as 8-bit values which can represent 256 different characters. The additional 128 characters in this extended ASCII range are defined by the operating system code page aka "Language for non-Unicode Programs". For example, on a Western system, Windows defaults to the character set defined by the Windows-1252 code page. Windows-1252 is an extension of another commonly used encoding called ISO-8859-1.
Windows-1252 gives you characters up to 0xFF (ÿ) but not anything greater than 8-bits (e.g. no 0x0100). By default LabVIEW only supports these 8-bit characters uses multi-byte character strings--interpretation is based on the current code page selected in the operating system. You may turn on Unicode through the instructions provided in my first link (it is unsupported and can be a bit buggy on occasion...) to obtain multibyte unicode character support to allow for multibyte characters not in the OS code page.
Unicode has multiple encodings, and the raw bits for a given character depend on the encoding used. LabVIEW's limited unicode support appears to use UTF-16LE (little-endian) encoding for anything displayed within the UI. So to get the characters to show up on the UI, you must enable unicode (instructions shown in my first link) and write the proper UTF-16LE codes:
UTF-8 is more common and thus easier to work with outside of LabVIEW (e.g. my version of Notepad++ evidently does not support UTF-16LE). I usually end up using UTF-8 encoded strings for files and converting them to UTF-16LE for display in LabVIEW.
The unicode library in my first link has the necessary subVIs for converting between UTF-8 and "Unicode" (i.e. UTF-16LE).
Best Regards,
John Passiak -
How to write to file Unicode characters
I have PDF files that I need to copy some strings out of and put them in various fields in a Postgres database. The goal is a Java screen into the database, whiere I mark and copy the PDF text and then paste it into a field in a Swing window, and from there into the database.
I am unsuccessful at reading a PDF file, so I have opted to cut and paste the PDF file into an MS word file. This results in errors in certain unicode characters. I am trying to rectify them by a simple program, a start of which is below, by a replacement of the erroneous char by the proper unicode symbol. As, shown by the following, I cannot figure out how to write out a unicode character. Do I need to wrap (which I don't know much about yet)? Or do I have a file problem? (I have a Vista machine.) I don't think it should be impossible to write unicode into a file, as I am able to write into MS Word files phonological symbols, Russian, and Sanskrit. So, it must be in the java.
P.S.: I am reading Schildt's Java: A Beginner's Guide and am through chapter10, but remaining chapters are on threads, enumerations, autoboxing, static import, annotations; generics,; applets, events, and miscellaneous topics, and, finally Swing. Maybe its in the autoboxing?
Any help would be most appreciated.
import java.io.FileReader;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.io.IOException;
public class CopyCharacters {
public static void main(String[] args) throws IOException {
FileReader inputStream = null;
//FileWriter outputStream = null;
PrintWriter outputStream = null;
char longa = 0x0101;
int longc = 0x0101;
char capA = 0x0041;
char longb = 0x0111;
// Unicode for uppercase Greek omega character char uniChar = '\u039A'
char uniChar = '\u039A';
// Character ca = new Character('0x0101'); // illegal
Character cb = new Character('\u0101');
Character cc = '\u0101';
int c;
try {
inputStream = new FileReader("Cardona1.txt");
outputStream = new
PrintWriter(new FileWriter(
"characteroutput.txt"));
outputStream.println( "character1 " + capA); //yields A
outputStream.println( "character2 " + longa); //yields ?
outputStream.println( "character3 " + '\u0101'); //yields ?
outputStream.println( "character4 " + longc); //yields 257
outputStream.println( "character5 " + "S\u00ED Se\u00F1or"); // yields character Sí Señor
outputStream.println( "character6 " + "S'\u00ED' Se\u00F1or"); // yields S'í' Señor
outputStream.println( "character7 " + "S\u0121 Se\u00F1or"); // yields character S? Señor
outputStream.println( "character8 " + "S'\u0121' Se\u00F1or"); // yields character S'?' Señor
outputStream.println( "character9 " + uniChar);// yields character ?
outputStream.println( "character10 " + '\u00FF');// yields character ÿ but fails on \u0100.
// only 0-255!!
outputStream.println( "character11 " + cc);// yields ?
outputStream.println( "character12 " + cb);// yields ?
outputStream.println( "character13 ?");// yields ?
while ((c = inputStream.read()) != -1) {
// outputStream.writeln(c);- error
} finally {
if (inputStream != null) {
inputStream.close();
if (outputStream != null) {
outputStream.close();
}I am unsuccessful at reading a PDF file, so I have opted to cut and paste the PDF file into an MS word file. This results in errors in certain unicode characters.Stop right there. You are digging a hole. Stop digging. Fix the problems with reading the PDF file.
-
How to write special characters in PDF using iText
How to write special characters encoded with UTF-8 in PDF using iText.
Regards,
Pandharinath.I don't know what your problem is but that's almost certainly the wrong question to ask about it. Java (including iText) uses only Unicode characters. (You may consider some of them to be "special" if you like but Unicode doesn't.) And when it does that, they aren't encoded in UTF-8 or any other encoding.
So can you describe your problem? That question doesn't make sense. -
Unicode characters not displayed in text property
I am developing a web application with Flex Builder. I write
the text for each label using a font called Dhivehi which is
written from left to right, and then copy the text and paste it in
the label property called text.
However in the source code view the text property of the
label shows
text=""
The issue is that when rendered the text is rversed. So I
want to run a function once the application is loaded, to reverse
the text in the label, so that the text will appear in it's
original way.
any help will be very much appreciatedHi,
I have a strange problem here with Windows.Forms.RichTextBox, when I assign a .ToString() value of sting builder to a rich text box’s .Rtf Property the Unicode characters containing in string builder gets converted to ???? symbols in .Rtf property of rich
text box.
Could you please let me know if Rich text box’s .Rtf property can hold Unicode characters? or is there any other way to store the Unicode characters in rich text box?
Thanks & Regards,
Tabarak
Hello,
To clarify and help you get proper solution, I would recommend you share a rtf string or even a simple sample which could reproduce that issue with us.
We will based on that sample to help you.
Regards,
Carl
We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place.
Click
HERE to participate the survey. -
Unicode characters are not inserted in database properly
Hi all,
Iam developing an application that takes entries from text boxs and inserts them in database , When i try to write in language rather than english (i use arabic) the fields are inserted but as ?????? in the database fields , i checked the codepoints of the string and every thing is ok untill the call to executeUpdate() , i think that the unicode characters represented in the codepoint array are not transferred to the database , How can i fix this problem.
Best Regards.In the connection string, you have to specify character encoding.
For example,
jdbc:mysql://localhost:3306/database?useUnicode=true&characterEncoding=utf8 -
Terminal.app and the European Unicode characters?
Does anyone have the unicode characters working properly in Terminal.app?
If I try to write in GNU nano 1.2.4 for instance "örrör" it translates into:
(one empty line)
örr
ör
which isn't certainly right. This is especially awkward when editing an unicode text file where the text then easily becomes more or less garbled. Usually more.
It doesn't seem to make any difference whether or not I use the Finnish extended (unicode) keyboard layout or the conventional one in nano. If the Terminal.app window preferences are set as UTF-8, it says:
?rr
?r
which looks even more garbled.
In plain bash the characters print like this:
å = \345
ä = \344
ö = \366
so my mighty apple translates the example string "örrör" as "\366rr\366r".
Any ideas, anyone?
PowerBook G4 @ 1.5 GHz Mac OS X (10.4.4) 1.25 GB DDR SDRAM
Debian Sarge 3.1 as a slave fetchmail server.Hi solarflare,
My first (and essentially only) language is English as well. However enough folks have asked that I have experimented with multibyte characters. There are so many apps and options involved, it's difficult to get consistent results. However, I'll recount as many settings as I can recall.
To begin with, you are right about the LC settings. It helps many apps to have:
export LCALL=enUS.UTF-8
export LANG=en_US.UTF-8
set in your shell startup scripts. Then the system should be set to produce unicode when you type. In the "Input Menu" tab of the "International" pane of "System Preferences", you should select a unicode keyboard layout, such as U.S. Extended.
To configure the Terminal, you need to open the "Terminal Inspector" by selecting "Window Settings..." in the "Terminal" menu. To type many multibyte characters, you need the option key. To use it, you must have the "Use option key as meta key" checkbox unchecked, although I find the meta key too important in UNIX to leave that unchecked. In the dropdown menu in the "Display" pane of the "Terminal Inspector", you should set the "Character Set Encoding" to "Unicode (UTF-8)". In the "Emulation" pane of the same window, you must uncheck the "Escape non-ASCII characters" checkbox. That is important as I've read that it is checked by default and that can produce some pretty strange results.
Now it's helpful to use a very modern shell. For instance, the latest beta version of zsh-4.3 has the best unicode support of all versions of zsh. After you've chosen a good shell, you're at the mercy of the application that you're using. As I gather you've noticed, vim has excellent unicode support and picks up on the LC settings. I have no idea about nano but it is meant to be a minimal text editor.
I know that my settings allow me to type extended characters and the "Character Palette" lets me insert more. As far as other command line utilities go, the best you can do is to choose well and keep your apps as up-to-date as possible. Fink or Darwin Ports can often help in that regard.
Gary
~~~~
This generation doesn't have emotional baggage.
We have emotional moving vans.
-- Bruce Feirstein -
Function for non unicode-characters
Hi
is there a function that permit to translate a unicode characters to a non-unicode characters?
For example with this function " à " must become " a ".
thank you for your helpCopy paste the below code and execute. This could also solve your problem.
DATA: BEGIN OF trans OCCURS 0,
auml TYPE x VALUE 'C4', "'Ä'
c_8e TYPE c VALUE 'A',
gra TYPE x VALUE 'E0', "'à'
c_gra TYPE c VALUE 'a',
END OF trans.
DATA : input(40).
DATA : output(40).
input = 'ÄBàp'.
output = input.
TRANSLATE output USING trans.
condense output no-gaps.
write :/ input.
write:/ output.
Thanks,
Senthil -
How to display unicode characters
hi
How could we save, display, write or read Unicode characters.Thanks a lot. I fully understand what you have said.
My test is running under Traditional Chinese "Big5" Windows XP system.
Chinese "Big5" font can display on a Console window. I can even input Chinese into the console window.
Or, in another word, I can TYPE a text file which contains "Big5" Chinese characters and show from the Console window. I assume this will prove that the Console window do know how to handle Chinese characters.
Now, my test is trying to CONVERT a Unicode string into a Chinese character string expecting the resulting Chinese string can be output into the Console window and let the XP Console window to handle the Chinese character display.
My main concerned question is "How can I CONVERT a Unicode string into a Big5 Chinese character string?"
String tstr = new String("\u39321\u28207","big5");
It seems this statement is INCORRECT, isn't it? -
Writing Unicode characters to scripting parameters on Windows
I am trying to read/write a file path that supports Unicode characters to/from scripting parameters (PIDescriptorParameters) with an Export plug-in. This works fine on OS X by using AliasHandle together with the "typeAlias" resource type in the "aete" section of the plugin resource file.
On Windows I am having trouble to make Photoshop correctly display paths with Unicode characters. I have tried:
- Writing null-terminated char* (Windows-1252) in a "typePath" parameter -- this works but obviously does not support Unicode.
- Writing null-terminated wchar* (UTF-16) in a "typePath" parameter -- this causes the saved path in the Action palette to be truncated to the first character, caused by null bytes in UTF-16. It appears PS does not understand UTF-16 in this case?
- Creating an alias record with sPSAlias->WinNewAliasFromWidePath and storing in a "typePath" or "typeAlias" parameter -- this causes the Action palette to show "txtu&", which does not make sense to me at all.
The question is: what is the correct scripting parameter resource type (typePath, typeAlias, ... ?) for file paths on Windows, and how do I write to it in such way that Photoshop will correctly display Unicode characters in the Actions palette?Hi
Skip the first (4 or 6 characters) and you'll get the Unicode value.
regards
Bartek -
Hi all,
I am trying to print certain unicode characters to a file using this code:
import java.io.*;
public class Unicode{
public static void main(String args[]) throws IOException{
char[] c = new char[1];
char ch= '\u0ce6'; //starting character
File f = new File("c:\\UC.txt");
BufferedWriter bf = new BufferedWriter(new FileWriter(f));
while( ch < '\u0cef'){
c[0] = ch++;
bf.write(c, 0, 1);//write the character to a file
bf.flush();
}All I can see in the file is '?????????'. I tried printing it to file as command prompt also showed the same thing. How can I see the Unicode characters of different languages? Do I need to set any char encoding using System properties?
Thank you very much.Sigh there is no such thing as plain text.
You create a file with the platform encoding (read the API docu of the FileWriter). That platform encoding is probably not even able to represent all unicode characters (it's likely to be ISO-8859-1 or one of it's variants).
Then you open that file without specifying the character set (it's guessed, possibly wrong) and you don't see the expected output.
Read http://www.joelonsoftware.com/articles/Unicode.html for an introduction into the beautiful world of unicode. -
Hi guys.
I use QT SDK to write a sample to load movie files.
when install QuickTime7.7.1 and call QT SDK's interface(OpenMovieFile method) to open file, it doesn't work. i will get error(-36). but when i use QT 7.6.9, it works well.
so how can i use QT SDK(install QT7.7.1 and OS is windows xp) to open movie file which fullpath include wide unicode characters(like D:\Media動画).
much appreciate.For Bex Query Application string 7.x Version Error
-
Problems reading unicode characters with BufferedReader or PrintWriter
I am creating a pretty standard chat server and client with the exception that I want to be able to send special math symbols back and forth to aid in helping people with math homework. The unicode characters will appear on the buttons, in the textField (where users type in their messages), in the messageArea (where users see all of the messages) correctly. However, as soon as the server reads it, it is converted to a ? character by either the BufferedReader or the PrintWriter, but I am fairly certain it is the BufferedReader. All of the Sun examples I have read recommend doing exactly what I have done to be able to support unicode characters so I am somewhat at a loss. Any help would be appreciated. I will include all of the source code (which is rather large) but the main problem is the with the BufferedReader or PrintWriter when the servers reads the string in and then broadcasts it to all the clients (at least I'm pretty sure it is).
// ChatServer.java
import java.net.Socket;
import java.net.ServerSocket;
import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.PrintWriter;
import java.io.IOException;
import java.util.Set;
import java.util.HashSet;
import java.util.HashMap;
import java.util.Iterator;
* A multithreaded chat room server. When a client connects the
* server requests a screen name by sending the client the
* text "SUBMITNAME", and keeps requesting a name until
* a unique one is received. After a client submits a unique
* name, the server acknowledges with "NAMEACCEPTED". Then
* all messages from that client will be broadcast to all other
* clients that have submitted a unique screen name. The
* broadcast messages are prefixed with "MESSAGE ".
* Because this is just a teaching example to illustrate a simple
* chat server, there are a few features that have been left out.
* Two are very useful and belong in production code:
* 1. The protocol should be enhanced so that the client can
* send clean disconnect messages to the server.
* 2. The server should do some logging.
public class ChatServer {
* The port that the server listens on.
private static final int PORT = 9001;
* The set of all names of clients in the chat room. Maintained
* so that we can check that new clients are not registering name
* already in use.
private static HashSet names = new HashSet();
* The set of all the print writers for all the clients. This
* set is kept so we can easily broadcast messages.
private static HashMap writers = new HashMap();
private static HashMap userSockets = new HashMap();
private static Set keys;
* The appplication main method, which just listens on a port and
* spawns handler threads.
public static void main(String[] args) throws Exception {
System.out.println("The chat server is running.");
ServerSocket listener = new ServerSocket(PORT);
try {
while (true) {
new Handler(listener.accept()).start();
} catch (Exception e) {
} finally {
listener.close();
* A handler thread class. Handlers are spawned from the listening
* loop and are responsible for a dealing with a single client
* and broadcasting its messages.
private static class Handler extends Thread {
private String name;
private Socket socket;
private BufferedReader in;
private PrintWriter out;
* Constructs a handler thread, squirreling away the socket.
* All the interesting work is done in the run method.
public Handler(Socket socket) {
this.socket = socket;
public void disconnect(String userName) {
if (userName != null) {
names.remove(userName);
if (writers.get(userName) != null) {
writers.remove(userName);
try {
((Socket)userSockets.get(userName)).close();
} catch (IOException e) {
e.printStackTrace();
System.out.println(userName +" has disconnected from the Chat Server.");
keys = writers.keySet();
for (Iterator i = keys.iterator(); i.hasNext(); ) {
((PrintWriter)writers.get(i.next())).println(
"USERQUIT" +name);
public void disconnectAll() {
for (Iterator i = names.iterator(); i.hasNext();) {
String userName = i.next().toString();
if (!userName.equals("administrator")) {
names.remove(userName);
keys = writers.keySet();
for (Iterator it = keys.iterator(); it.hasNext(); ) {
((PrintWriter)writers.get(it.next())).println(
"USERQUIT" +name);
writers.remove(userName);
userSockets.remove(userName);
* Services this thread's client by repeatedly requesting a
* screen name until a unique one has been submitted, then
* acknowledges the name and registers the output stream for
* the client in a global set, then repeatedly gets inputs and
* broadcasts them.
public void run() {
try {
// Create character streams for the socket.
in = new BufferedReader(new InputStreamReader(
socket.getInputStream()));
out = new PrintWriter(socket.getOutputStream(), true);
// Request a name from this client. Keep requesting until
// a name is submitted that is not already used. Note that
// checking for the existence of a name and adding the name
// must be done while locking the set of names.
while (true) {
out.println("SUBMITNAME");
name = in.readLine();
if (name == null) {
return;
synchronized (names) {
if (!names.contains(name) && name.equalsIgnoreCase("administrator")) {
out.println("SUBMITPASSWORD");
String password = in.readLine();
if (password.equals("s3cure")) {
out.println("GRANTEDADMIN");
if (!names.contains(name)) {
names.add(name);
break;
// Now that a successful name has been chosen, add the
// socket's print writer to the set of all writers so
// this client can receive broadcast messages.
out.println("NAMEACCEPTED");
keys = writers.keySet();
for (Iterator i = keys.iterator(); i.hasNext(); ) {
((PrintWriter)writers.get(i.next())).println(
"USERJOIN" +name);
writers.put(name, out);
userSockets.put(name, socket);
System.out.println(name +" has successfully connected to the Chat Server.");
// Accept messages from this client and broadcast them.
// Ignore other clients that cannot be broadcasted to.
while (true) {
String input = in.readLine();
if (input == null) {
return;
else if (input.startsWith("LISTUSERS")) {
Iterator i = names.iterator();
String namesString = new String();
while (i.hasNext()) {
namesString += " " +i.next();
out.println("USERLIST " +namesString);
catch (Exception e) {
finally {
disconnect(name);
// ChatClient.java
import java.util.HashSet;
import java.util.StringTokenizer;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.ListIterator;
import java.awt.event.WindowEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.KeyListener;
import java.awt.event.KeyEvent;
import java.awt.Point;
import java.awt.Button;
import java.awt.Font;
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.Dimension;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JTextArea;
//import javax.swing.JTextPane;
import javax.swing.JScrollPane;
import javax.swing.JOptionPane;
import javax.swing.JList;
import javax.swing.DefaultListModel;
import javax.swing.JMenuBar;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import java.net.Socket;
import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.PrintWriter;
import java.io.IOException;
* A simple Swing-based client for the chat server. Graphically
* it is a frame with a text field for entering messages and a
* textarea to see the whole dialog.
* The client follows the Chat Protocol which is as follows.
* When the server sends "SUBMITNAME" the client replies with the
* desired screen name. The server will keep sending "SUBMITNAME"
* requests as long as the client submits screen names that are
* already in use. When the server sends a line beginning
* with "NAMEACCEPTED" the client is now allowed to start
* sending the server arbitrary strings to be broadcast to all
* chatters connected to the server. When the server sends a
* line beginning with "MESSAGE " then all characters following
* this string should be displayed in its message area.
public class ChatClient {
BufferedReader in;
PrintWriter out;
JFrame frame = new JFrame("Math Chatter version 0.3");
JTextField textField = new JTextField(40);
JTextArea messageArea = new JTextArea(25, 40);
//JTextPane messageArea = new JTextPane();
// Menu
JMenuBar menuBar = new JMenuBar();
// File Menu and MenuItems
JMenu fileMenu = new JMenu();
JMenuItem connectMenuItem = new JMenuItem();
JMenuItem disconnectMenuItem = new JMenuItem();
JMenuItem exitMenuItem = new JMenuItem();
// Help Menu and MenuItems
JMenu helpMenu = new JMenu();
JMenuItem aboutMenuItem = new JMenuItem();
JOptionPane aboutDialog = new JOptionPane();
// Message Area Popup Menu and MenuItems
JPopupMenu messageAreaPopupMenu = new JPopupMenu();
JMenuItem connectPopupMenuItem = new JMenuItem();
JMenuItem disconnectPopupMenuItem = new JMenuItem();
JMenuItem clearTextMenuItem = new JMenuItem();
JMenuItem exitPopupMenuItem = new JMenuItem();
MouseListener messageAreaPopupListener = new messageAreaPopupListener();
// User Area Popup Menu and MenuItems
JPopupMenu userAreaPopupMenu = new JPopupMenu();
JMenuItem pingPopupMenuItem = new JMenuItem();
JMenuItem disconnectUserPopupMenuItem = new JMenuItem();
JMenuItem disconnectAllUsersPopupMenuItem = new JMenuItem();
MouseListener userAreaPopupListener = new userAreaPopupListener();
// Panel with textfield, send, and clear buttons
JPanel sendTextPanel = new JPanel();
// Panel that has all the math buttons
JPanel buttonPanel = new JPanel();
// Panel that has messageArea and users panell
JPanel displayPanel = new JPanel();
DefaultListModel listModel = new DefaultListModel();
JList userNamesList = new JList(listModel);
//JTextArea userNamesTextArea = new JTextArea(25, 10);
// buttonPanel stuff
Button sendButton = new Button();
Button clearButton = new Button();
Button infinityButton = new Button();
Button thetaButton = new Button();
Button limitButton = new Button();
Button thereforeButton = new Button();
JLabel buttonLabel = new JLabel("Useful math stuff: ");
HashSet usersHashSet = new HashSet();
LinkedList sentMessageList = new LinkedList();
ListIterator sentMessageIterator;
boolean isAdmin = false;
* Constructs the client by laying out the GUI and registering a
* listener with the textfield so that pressing Return in the
* listener sends the textfield contents to the server. Note
* however that the textfield is initially NOT editable, and
* only becomes editable AFTER the client receives the NAMEACCEPTED
* message from the server.
public ChatClient() {
// -----------------> Layout MenuBar
frame.setJMenuBar(menuBar);
fileMenu.setText("File");
connectMenuItem.setText("Connect");
connectMenuItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
showWhoopsDialog();
/*out.println("CONNECT");
try {
run();
catch (Exception ex) {
ex.printStackTrace();
fileMenu.add(connectMenuItem);
disconnectMenuItem.setText("Disconnect");
disconnectMenuItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
chatDisconnect();
fileMenu.add(disconnectMenuItem);
exitMenuItem.setText("Exit");
exitMenuItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
frame.dispose();
System.exit(0);
return;
fileMenu.add(exitMenuItem);
menuBar.add(fileMenu);
helpMenu.setText("Help");
aboutMenuItem.setText("About");
aboutMenuItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
aboutDialog.setDoubleBuffered(true);
aboutDialog.showMessageDialog(frame,
"Chat Server and Client were originally written by Ray Toal and were found at \n http://www.technocage.com/~ray/viewsource.jsp?java/networking/ChatServer.java and \n http://www.technocage.com/~ray/viewsource.jsp?java/networking/ChatClient.java. \n\n Math Chatter and all revisions have been done by William Ready.",
"About Math Chatter Server and Client version 0.3",
JOptionPane.INFORMATION_MESSAGE);
helpMenu.add(aboutMenuItem);
menuBar.add(helpMenu);
// -----------> End Menu
// -----------> Popup Menus
// -----------> Message Area Popup Menu
connectPopupMenuItem.setText("Connect");
connectPopupMenuItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
showWhoopsDialog();
disconnectPopupMenuItem.setText("Disconnect");
disconnectPopupMenuItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
chatDisconnect();
clearTextMenuItem.setText("Clear text");
clearTextMenuItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
messageArea.setText("");
exitPopupMenuItem.setText("Exit");
exitPopupMenuItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
frame.dispose();
System.exit(0);
messageAreaPopupMenu.add(connectPopupMenuItem);
messageAreaPopupMenu.add(disconnectPopupMenuItem);
messageAreaPopupMenu.add(clearTextMenuItem);
messageAreaPopupMenu.add(exitPopupMenuItem);
messageArea.addMouseListener(messageAreaPopupListener);
// -----------> End Message Area Popup Menu
// -----------> User Area Popup Menu
pingPopupMenuItem.setText("Ping User");
pingPopupMenuItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
//System.out.println("Yo yo yo");
disconnectUserPopupMenuItem.setText("Disconnect User");
disconnectUserPopupMenuItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (userNamesList.getSelectedValue() != null) {
//System.out.println("Yo yo yo");
out.println("DISCONNECTUSER " +userNamesList.getSelectedValue().toString());
//disconnectUserPopupMenuItem.setEnabled(false);
disconnectUserPopupMenuItem.setVisible(false);
disconnectAllUsersPopupMenuItem.setText("Disconnect All Users");
disconnectUserPopupMenuItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (userNamesList.getSelectedValue() != null) {
//System.out.println("Yo yo yo");
out.println("DISCONNECTALLUSERS");
//disconnectUserPopupMenuItem.setEnabled(false);
disconnectAllUsersPopupMenuItem.setVisible(false);
userAreaPopupMenu.add(pingPopupMenuItem);
userAreaPopupMenu.add(disconnectUserPopupMenuItem);
userAreaPopupMenu.add(disconnectAllUsersPopupMenuItem);
userNamesList.addMouseListener(userAreaPopupListener);
// -----------> End User Area Popup Menu
// -----------> End Popup Menus
// -----------> Layout GUI
textField.setEditable(false);
textField.requestDefaultFocus();
messageArea.setEditable(false);
sendTextPanel.setLayout(new FlowLayout());
sendTextPanel.add(textField);
sendButton.setLabel("Send");
sendButton.setEnabled(false);
sendTextPanel.add(sendButton);
clearButton.setLabel("Clear");
sendTextPanel.add(clearButton);
buttonPanel.setLayout(new FlowLayout());
buttonPanel.add(buttonLabel);
infinityButton.setLabel("\u221e");
buttonPanel.add(infinityButton);
thetaButton.setLabel("\u03b8");
buttonPanel.add(thetaButton);
limitButton.setLabel("lim");
buttonPanel.add(limitButton);
thereforeButton.setLabel("\u2234");
buttonPanel.add(thereforeButton);
userNamesList.setVisibleRowCount(26);
userNamesList.setFixedCellWidth(110);
JScrollPane nameTextScrollPane = new JScrollPane(userNamesList);
JScrollPane messageAreaScrollPane = new JScrollPane(messageArea);
displayPanel.setLayout(new FlowLayout());
displayPanel.add(messageAreaScrollPane);
displayPanel.add(nameTextScrollPane);
frame.getContentPane().add(sendTextPanel, "North");
frame.getContentPane().add(displayPanel, "Center");
frame.getContentPane().add(buttonPanel, "South");
frame.pack();
// ---------------> Add Listeners
textField.addKeyListener(new KeyListener() {
public void keyPressed(KeyEvent e){ }
public void keyTyped(KeyEvent e){
if (e.getKeyChar() == KeyEvent.VK_UP) {
if (sentMessageIterator.hasNext()) {
textField.setText((String)sentMessageIterator.next());
if (e.getKeyChar() == KeyEvent.VK_DOWN) {
if (sentMessageIterator.hasPrevious()) {
textField.setText((String)sentMessageIterator.previous());
if (e.getKeyChar() == KeyEvent.VK_ENTER) {
String text = textField.getText();
if (text != null && !(text.equals(""))) {
sentMessageList.addFirst(textField.getText());
sentMessageIterator = sentMessageList.listIterator();
out.println(textField.getText());
textField.setText("");
public void keyReleased(KeyEvent e){}
sendButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
out.println(textField.getText());
textField.setText("");
textField.requestFocus();
clearButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText("");
textField.requestFocus();
infinityButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText(textField.getText() +"\u221e");
textField.requestFocus();
thetaButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText(textField.getText() +"\u03b8");
textField.requestFocus();
limitButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String limit = JOptionPane.showInputDialog(frame,
"Enter the value that the variable approaches. \n If the value is infinity, type in inf. \n (Note: the variable name is irrelevant)",
"Value that variable approaches",
JOptionPane.QUESTION_MESSAGE);
if (limit != null && limit.equalsIgnoreCase("inf"))
textField.setText(textField.getText() +"lim [x->\u221e] ");
else if (limit != null)
textField.setText(textField.getText() +"lim [x->" +limit +"] ");
textField.requestFocus();
thereforeButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText(textField.getText() +"\u2234");
textField.requestFocus();
// -------------> End Listeners
// -------------> End GUI
* Prompt for and return the address of the server.
private String getServerAddress() {
return JOptionPane.showInputDialog(
frame,
"Enter IP Address of the Server:",
"Welcome to the Chatter",
JOptionPane.QUESTION_MESSAGE);
private void showWhoopsDialog() {
JOptionPane.showMessageDialog(frame,
"Unfortunately this feature has not been implemented yet. \n The only way to connect currently is to exit the program \n and start it again",
"Whoops!",
JOptionPane.ERROR_MESSAGE);
private void chatDisconnect() {
messageArea.append("You have disconnected from the Chat Server\n");
textField.setEditable(false);
messageArea.setEnabled(false);
userNamesList.setEnabled(false);
fileMenu.requestFocus();
out.println("DISCONNECT");
* Prompt for and return the desired screen name.
private String getName() {
return JOptionPane.showInputDialog(
frame,
"Choose a screen name:",
"Screen name selection",
JOptionPane.PLAIN_MESSAGE);
private String getPassword() {
return JOptionPane.showInputDialog(
frame,
"Type in your password:",
"Password Input",
JOptionPane.PLAIN_MESSAGE);
* Connects to the server then enters the processing loop.
private void run() throws IOException {
// Make connection and initialize streams
String serverAddress = getServerAddress();
if (serverAddress != null && !(serverAddress.equals(""))) {
Socket socket = new Socket(serverAddress, 9001);
in = new BufferedReader(new InputStreamReader(
socket.getInputStream()));
out = new PrintWriter(socket.getOutputStream(), true);
// Process all messages from server, according to the protocol.
while (true) {
try {
String line = in.readLine();
if (line.startsWith("SUBMITNAME")) {
out.println(getName());
} else if (line.startsWith("NAMEACCEPTED")) {
textField.setEditable(true);
out.println("LISTUSERS");
sendButton.setEnabled(true);
//messageArea.setEnabled(true);
} else if (line.startsWith("SUBMITPASSWORD")) {
out.println(getPassword());
} else if (line.startsWith("GRANTEDADMIN")) {
isAdmin = true;
//disconnectUserPopupMenuItem.setEnabled(true);
disconnectUserPopupMenuItem.setVisible(true);
disconnectAllUsersPopupMenuItem.setVisible(true);
} else if (line.startsWith("DISCONNECT")) {
sendButton.setEnabled(false);
return;
} else if (line.startsWith("USERLIST")) {
StringTokenizer st = new StringTokenizer(line.substring(8), " ");
while (st.hasMoreTokens()) {
usersHashSet.add(st.nextToken());
listModel.removeAllElements();
for (Iterator i = usersHashSet.iterator(); i.hasNext(); ) {
listModel.addElement(i.next());
} else if (line.startsWith("USERJOIN")) {
String userJoinName = line.substring(8).trim();
usersHashSet.add(userJoinName);
listModel.addElement(userJoinName);
} else if (line.startsWith("USERQUIT")) {
String userQuitName = line.substring(8).trim();
usersHashSet.remove(userQuitName);
listModel.removeElement(userQuitName);
} else if (line.startsWith("MESSAGE")) {
messageArea.setFont(new Font("Lucida Sans", Font.PLAIN, 12));
messageArea.append(line.substring(8) + "\n");
catch (Exception e) {
//e.printStackTrace();
return;
* Runs the client as an application with a closeable frame.
public static void main(String[] args) throws Exception {
ChatClient client = new ChatClient();
client.frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
client.frame.setLocation(200, 100);
client.frame.show();
client.run();
class messageAreaPopupListener extends MouseAdapter {
public void mousePressed(MouseEvent e) {
maybeShowPopup(e);
public void mouseReleased(MouseEvent e) {
maybeShowPopup(e);
private void maybeShowPopup(MouseEvent e) {
if (e.isPopupTrigger()) {
messageAreaPopupMenu.show(e.getComponent(),
e.getX(), e.getY());
class userAreaPopupListener extends MouseAdapter {
public void mousePressed(MouseEvent e) {
maybeShowPopup(e);
public void mouseReleased(MouseEvent e) {
maybeShowPopup(e);
private void maybeShowPopup(MouseEvent e) {
if (e.isPopupTrigger()) {
userAreaPopupMenu.show(e.getComponent(),
e.getX(), e.getY());Yes, the code is large, isn't it. It is a good idea, when you have a problem you can't solve, to remove unnecessary code. When the problem disappears, then you know the code you just removed was probably the source of the problem.
But in your case, I think that none of the 1000 lines of code you posted are the problem. You appear to be using Lucida Sans, which is a positive sign; it can render many of the characters you have hard-coded in your program. But apparently the problem is with characters that are coming from somewhere else? And you are using a PrintWriter to send them there and a BufferedReader to get them back? These convert your data from characters to bytes and back again using the default encoding for your system. Chances are that this encoding is some "extended ASCII" encoding that doesn't know how to map anything above \u00ff. You need to get an InputStreamReader and an OutputStreamWriter into your transmission. (Wrap your socket.getInputStream() in an InputStreamReader and wrap that in a BufferedReader, etc.) These objects can take an encoding name as their second parameter; try "UTF-8" or "UTF8" for the encoding. Their API documentation has a link to a page about encodings; follow that if you need more info. -
Replacing Unicode characters in a String
I have a text as a String and in this text which is foreign language appears sometimes characters in Unicode format as &#246; or &#214;
The question is, how can I convert this String so these Unicode characters would become readable characters.
Thank you for any lead...:-) Interesting - twice in 10 minutes I'm recommending the use of Elliott Hughes' class. See http://elliotth.blogspot.com/2004/07/java-implementation-of-rubys-gsub.html .
You just have to write a regular expression to match the terms ( "&#(\\\d+)"), extract the number as a string (group(1)) then use the Integer.parseInt(the numeric string) and cast to a char.
Edited by: sabre150 on Feb 9, 2012 9:53 AM
This is an example I wrote a couple of years ago (and published on the old Sun site forums) that does pretty much exactly what you need
import e.util.Rewriter;
public class Sabre20090919
public static void main(String[] args) throws Exception
String title = "& #26412;& #26399;& #28136;& #21033;\n" +
"& #22522;& #26412;& #27599;& #32929;& #30408;& #39192;\n" +
"& #32380;& #32396;& #29151;& #26989;& #21934;& #20301;& #28136;& #21033;\n" +
"& #26371;& #35336;& #21407;& #21063;& #35722;& #21205;& #32047;& #31309;& #24433;& #38911;& #25976;\n" +
"& #26222;& #36890;& #32929;& #27599;& #32929;& #30408;& #39192;\n" +
"& #31232;& #37323;& #27599;& #32929;& #30408;& #39192;\n";
Rewriter rewriter = new Rewriter("&\\s*#(\\d+);")
@Override
public String replacement()
return Character.toString((char) Integer.parseInt(group(1)));
title = rewriter.rewrite(title);
System.out.println(title);
System.out.print("Unicode :\"");
for (char ch : title.toCharArray())
System.out.printf("\\u%04x", (int) ch);
System.out.println("\"");
byte[] asBytes = title.getBytes("big5");
for (byte b : asBytes)
System.out.printf("%02x ", (int) (b & 0xff));
System.out.println();
}The rest is just a test harness.
Edited by: sabre150 on Feb 9, 2012 10:02 AM
Removed redundant code -
Oracle Discoverer Desktop Report output showing unicode characters
Hi,
Oracle Discoverer Desktop 4i version Report output showing the below unicode characters.
kara¿ah L¿MAK HOLD¿NG A.¿
We ran the same query in sql at that time the data showing correctly.
Please let me know, is there any language settings/ NLS settings are need to set
Thanks in Advance.Hi
Let me give you some background. In the Windows registy, every Oracle Home has a setting called NLS_LANG. This is the variable that controls, among other things, the numeric characters and the language used. The variable is made up of 3 parts. These are:
language_territory.characterset
Notice how there is an underscore character between the first two variables and a period between the last two. This is very important and must not be changed.
So, for example, most American settings look like this: AMERICAN_AMERICA.WE8MSWIN1252
The second variable, the territory, controls the default date, monetary, and numeric formats and must correspond to the name of a country. So if I wanted to use the Greek settings for numeric formatting, editing the NLS_LANG for Discoverer Desktop to this setting will do the trick:
AMERICAN_GREECE.WE8MSWIN1252
Can you please check your settings? Here's a workflow:
a) Open up your registry by running Regedit
b) Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE
c) Look for the Oracle Home corresponding to where Discoverer Desktop is installed. It's probably called KEY_BIToolsHome_1
d) Clicking on the Oracle Home will display all of the variables
e) Take a look at the variable called NLS_LANG - if it is correct Exit the registry
f) If its not correct please right-click on it and from the pop-up select Modify
f) Change the variable to the right setting
g) Click the OK button to save your change
h) Exit the registry
Best wishes
Michael
Maybe you are looking for
-
Moderation Mail Not Work in Exchange 2013
Hello All, I facing difficulties regarding Moderation Mail. The Moderation mail not send to moderator. also i found that the arbitration mailbox also corrupted. Error: WARNING: The object abc.com/Users/Migration.8f3e7716-2011-43e4-96b1-aba62d229136 h
-
Problem with iTunes 11.1 0xE8000003 error, won't let me sync with iPhone 5
I have downloaded new iTunes 11.1 (Windows) and when I try to sync it with my iPhone 5, 0xE8000003 error shows up. What can I do?
-
Problem parsing xml in J2ME (using kxml2)
Hello. May someone who knows how to use kxml help me please? I'll try to be straight forward. (Please excuse my imperfect English) My xml file look something like this: <?xml version="1.0" encoding="utf-8"?> <sample_tag1 xmlns:mysample="http://www.sa
-
HT4623 WHAT IF MY I PHONE DOESN'T HAVE A SOFTWARE UPDATE OPTION?
what if my i phone doesnt have the software update option?
-
Three-level ADF Tree from HR Schema
JDeveloper 11.1.1.0.1 + ADFBC + ADFRC Hello all! I am stumped on this one. I want to create a tree based on the HR schema that includes three levels: Department Name > Job Title > Employee Name. In other words, I want the root node to be Department N