(URGENT) problem with JTable: can't catch ENTER and control focus in JTable

I hava a JTable and a AbstractTableModel.
Here is what i want to DO.
When I press the ENTER or TAB I want to set focus to cell wich is 2 position away from the the sell I am editing
on the same row in the JTable. How can I do this.
in fact, that is my real question HOW to ?
When I press the ENTER or TAB in JTABLE I want to tell to JTable which cell to grab the focus

In the UI is defined the InputMap/ActionMap pair to respond to keys. There is defined an action for ENTER. I have had the same problem, and the only thing that worked for me was to clear the actionMap, and reassign some keys to their original action, and some (e.g. ENTER, TAB) to my actions. This worked. With TAB is harder beacuse i guess it's deeper in the JVM implemented, but after a while i've managed to overwrite that too.

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Urgent :problem with JTable on server program

hi all i am writing an internet cafe timer.there is a table with the following colums:PC Name,IP Address,Status,Time Left, Time Login. ,on the server GUI. Whenever a client connects,a new row having the clients details is added to the table model, which reflects on the table.but if a client disconnects and reconnects, i want it to search thru the rows in the model, if there is a row with its information already,it shouls simply update the status column to "Reconnected", and not add an entirly new row, but if there is no row with its information, it can then add a new row with its information.
Simply put, when a client connects,it should check
1)if the table is empty, add a new row;
2)else, check if tabe already has a row for the client, then update the row,else add a new row.
its not working this way.it only works for the first client to connect,if other clients connect and disconnect,it still adds a new row, instaed of updating.
the method doTable() in class ClientThread is what i use .please check it out and help me.
i have a thread for each client.when a client connects, the server starts the thread and passes an instance of the server ui to the thread, so the threads acess the tablemodel thru this instance.
Here is a simple run down of my classes
CafeServer.java
* @(#)CafeServer.java
* @author obinna
* @version 1.00 2007/3/10
import java.net.*;
import java.io.*;
import java.util.*;
import javax.swing.*;
import java.sql.*;
public class CafeServer {
     int serverPort;
     int serverLimit;
     //ServerSocket serversocket;
     private static int rownum = -1;
     private static Connection conn;
     private static CafeServerUI serverUI;
* Creates a new instance of <code>CafeServer</code>.
public CafeServer() {
     try{
          Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
          conn = DriverManager.getConnection("jdbc:odbc:cafetimer","","");
          System.out.println("connection established with cafetimer database");
     }catch(Exception ex){
          JOptionPane.showMessageDialog(null,"Cannot find database");
          serverUI = new CafeServerUI( this,conn );
public void closeServer(){
     System.exit(0);
public static void main(String[] args) throws IOException{
// TODO code application logic here
try{
     UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
     new CafeServer();
catch(Exception ex){
     JOptionPane.showMessageDialog(null,"Could Not Find System Look and Feel.\nDefault L&F Loaded.");
     JFrame.setDefaultLookAndFeelDecorated(true);
ServerSocket serverSocket = null;
boolean listening = true;
try {
serverSocket = new ServerSocket(4444);
} catch (IOException e) {
System.err.println("Could not listen on port: 4444.");
System.exit(-1);
while (listening)
     new ClientThread(serverSocket.accept(),serverUI,conn).start();
serverSocket.close();
CafeServerUI.java
//import statements.......................................
public class CafeServerUI extends JFrame{
     public Vector pins = new Vector<String>();
     public DefaultTableModel model;
     public JTable table;
     protected JTextArea msgarea;
     protected JScrollPane scrpane;
     protected JPanel mainp,northp,leftp,rightupp,rightp;
     protected String[] colnames = {"Computer Name","IP Ad
.............................................................constrctor follows
ClientThread.java
import java.io.*;
import java.net.*;
import java.sql.*;
public class ClientThread extends Thread{
     private Socket socket = null;
     private String pin, timeleft, pin3,timeleft3,tleft;
     private CafeServerUI csui = null;
     private Ticket ticket;
     private RemainingTime remtime;
     private String hostname,ipadd;
     private int rownum;
     private Connection conn;
     private Statement stmt;
     private ResultSet rs;
     private boolean found;
     public ObjectOutputStream outputStream;
     public ObjectInputStream inputStream;
     private Admin admin;
     boolean found2 = false;
     //private String[] newrow = new String[5];
public ClientThread(Socket socket,CafeServerUI csui,Connection conn) {
          super("Client Thread");
          this.socket = socket;
          this.csui = csui;
          this.conn = conn;
          try{
               stmt = this.conn.createStatement();
          }catch(Exception ex){
               System.out.println(ex.getMessage() + " : " + ex);
          //this.rownum = rownum;
          hostname = this.socket.getInetAddress().getHostName();
          ipadd = this.socket.getInetAddress().getHostAddress();
          //sString[] newrow = {hostname,ipadd,"Connected","",""};
          doTable();
          //System.out.print("table row " + this.rownum);
          this.csui.oos.addElement(ClientThread.this);
public void doTable(){
     String[] newrow = {hostname,ipadd,"Connected","",""};
     if(this.csui.model.getRowCount() == 0){
               this.csui.model.addRow(newrow);
          }else{
               for(int i=0; i < this.csui.model.getRowCount(); i++ ){
                    String hname = (String)this.csui.model.getValueAt(i,0);
                    if(hname.equalsIgnoreCase(hostname)){
                         this.csui.model.setValueAt("Re Connected",i,2);
                         break;
                    }else{
                         this.csui.model.addRow(newrow);
                         break;
.....public void run()....

In the UI is defined the InputMap/ActionMap pair to respond to keys. There is defined an action for ENTER. I have had the same problem, and the only thing that worked for me was to clear the actionMap, and reassign some keys to their original action, and some (e.g. ENTER, TAB) to my actions. This worked. With TAB is harder beacuse i guess it's deeper in the JVM implemented, but after a while i've managed to overwrite that too.

Urgent : Problem with Editable ALV Grid for Quantity and Currency Fields

Hi All,
I am using Editable ALV Grid display and have quantity and value as editable fields in the display.
When user changes these values these values are not changing properly .
For the quantity field the domain is MENG13 with 3 deciamal places and here if we enter 500 it takes it as 0.500 .
The same problem is for the currency field. Here the Domain is WERT7 with 3 decimal places.
Here also it takes last 2 digits after decimal places by default.
Please advice how to get proper values in this case from ALV editable fields.
Thanks and Regards
Harshad
Edited by: Harshad Rahirkar on Dec 25, 2007 7:39 AM

for all the currency field , it will display like that only.
u have to manipulate uin program before displaying.
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Urgent: problem with sharing HttpSession object between Jsp and servlets.

Hi,
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Just a guess, but it sounds like you have cookies turned off and are not
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          > Hi,
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Hello,
i have a selection problem with JTable. I want to allow only single cell selection and additionally limit the selection to the first column.
I preffered the style from MS Outlook Express where you can select the email accounts to edit.
It is a table like this:
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URGENT Problem with Greek Character from an Oracle database

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Here is the answer of the microsoft:
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When retrieving Greek characters from this database in the application, you cannot see them.
Could you please send me a screenshot of these characters in the .Net application?
Are they displayed as gibberish, or as inverted questions marks (?)?
I already had similar cases with Hebrew characters hosted on an Oracle database.
These characters were displayed as questions marks on the client side.
This is due to the fact that System.Data.OracleClient is using the Server CharacterSet to display the characters.
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This is different from OLEDB where you could interact on client side by modifying the NLS_LANG parameter in the registry HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\HOME0.
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I don't know If I can fix your problem, but
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I've a big problem with adobe acrobat reader XI pro and I hope you can help me.
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Hi !
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thnx in advance

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Problem With ButtonUI in an Auxiliary Look and Feel

This is my first post to one of these forums, so I hope everything works correctly.
I have been trying to get an axiliary look and feel installed to do some minor tweaking to the default UI. In particular, I need it to work with Windows and/or Metal as the default UI. For the most part I let the installed default look and feel handle things with my code making some colors lighter, darker, etc. I also play with focus issues by adding FocusListeners to some components. I expect my code to work reasonably well no matter what the default look and feel is. It works well with Motif, Metal, and Windows, the only default look and feels I've tested with. What I'm going to post is a stripped down version of what I have been working on. This example makes gross changes to the JButton background and foreground colors in order to illustrate what I've encountered.
I have three source code files. The first, Problem.java, creates a JFrame and adds five buttons to it. One button installs MyAuxLookAndFeel as an auxiliary look and feel using MyAuxButtonUI for the look and feel of JButtons. The next button removes that look and feel. The next button does nothing except print a line to System.out. The next button installs MyAuxLookAndFeel as an auxiliary look and feel using MyModButtonUI for the look and feel of JButtons. The last button removes that look and feel.
The problem is, when I install the first auxiliary look and feel, buttons are no longer tabable. Also, they cannot be invoked by pressing the space button when they're in focus. When I remove the first auxiliary look and feel everything reverts to behaving normally. When I add the "Mod" version, button tabability is fine. The only difference is I've added the following code:
if ( c.isFocusable() ) {
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}That strikes me as an odd piece of code to profoundly change the program behavior. Anyway, after adding and removing the "Mod" look and feel, the tababilty is forever fixed. That is, if I subsequently re-install the first look and feel, tababilty works just fine.
The problem with using the space bar to select a focused button is more problematic. My class is not supposed to mess with the default look and feel which may or may not use the space bar to press the button with focus. When the commented code in MyModButtonUI is uncommented, things behave correctly. Even the statement
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All of this leads me to two questions.
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2. Assuming I have no fundamental problems with my approach, it's possible I've found a real bug. I searched the bug database and couldn't find anything like this. Of course, this is the first time I've tried seasrching the database for a bug so my I'm doing it badly. Has this already been reported as a bug? Is there any reason I shouldn't report it?
What follows is the source code for my example. It's in three files because the two ButtonUI classes must be public in order to work. Thanks for insight you can provide.
Bill
File Problem.java:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Problem extends JFrame {
   public boolean isAuxInstalled = false;
   public boolean isModInstalled = false;
   public LookAndFeel lookAndFeel = new MyAuxLookAndFeel();
   private static int ctr = 0;
   public static void main( String[] args ) {
      new Problem();
   public Problem() {
      this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      setSize(250, 150);
      setTitle("Button Test");
      JButton install = new JButton("Install");
      JButton remove = new JButton("Remove");
      JButton doNothing = new JButton("Do Nothing");
      JButton installMod = new JButton("Install Mod");
      JButton removeMod = new JButton("Remove Mod");
      this.getContentPane().setLayout(new FlowLayout());
      this.getContentPane().add(install);
      this.getContentPane().add(remove);
      this.getContentPane().add(doNothing);
      this.getContentPane().add(installMod);
      this.getContentPane().add(removeMod);
      install.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {
            if ( !isAuxInstalled ) {
               isAuxInstalled = true;
               UIManager.addAuxiliaryLookAndFeel( lookAndFeel );
               SwingUtilities.updateComponentTreeUI( Problem.this );
      remove.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {
            if ( isAuxInstalled ) {
               isAuxInstalled = false;
               UIManager.removeAuxiliaryLookAndFeel( lookAndFeel );
               SwingUtilities.updateComponentTreeUI( Problem.this );
      doNothing.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {
            System.out.println( "Do nothing " + (++ctr) );
      installMod.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {
            if ( !isModInstalled ) {
               isModInstalled = true;
               UIManager.addAuxiliaryLookAndFeel( lookAndFeel );
               SwingUtilities.updateComponentTreeUI( Problem.this );
      removeMod.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {
            if ( isModInstalled ) {
               isModInstalled = false;
               UIManager.removeAuxiliaryLookAndFeel( lookAndFeel );
               SwingUtilities.updateComponentTreeUI( Problem.this );
      setVisible(true);
   class MyAuxLookAndFeel extends LookAndFeel {
      public String getName() {
         return "Button Test";
      public String getID() {
         return "Not well known";
      public String getDescription() {
         return "Button Test Look and Feel";
      public boolean isSupportedLookAndFeel() {
         return true;
      public boolean isNativeLookAndFeel() {
         return false;
      public UIDefaults getDefaults() {
         UIDefaults table = new MyDefaults();
         Object[] uiDefaults = {
            "ButtonUI", (isModInstalled ? "MyModButtonUI" : "MyAuxButtonUI"),
         table.putDefaults(uiDefaults);
         return table;
   class MyDefaults extends UIDefaults {
      protected void getUIError(String msg) {
//         System.err.println("(Not) An annoying error message!");
}File MyAuxButtonUI.java:
import javax.swing.*;
import java.awt.*;
import javax.swing.plaf.*;
import javax.swing.plaf.multi.*;
import javax.accessibility.*;
public class MyAuxButtonUI extends ButtonUI {
   private Color background;
   private Color foreground;
   private ButtonUI ui = null;
   public static ComponentUI createUI( JComponent c ) {
      return new MyAuxButtonUI();
   public void installUI(JComponent c) {
      MultiButtonUI multiButtonUI = (MultiButtonUI) UIManager.getUI(c);
      this.ui = (ButtonUI) (multiButtonUI.getUIs()[0]);
      super.installUI( c );
      background = c.getBackground();
      foreground = c.getForeground();
      c.setBackground(Color.GREEN);
      c.setForeground(Color.RED);
   public void uninstallUI(JComponent c) {
      super.uninstallUI( c );
      c.setBackground(background);
      c.setForeground(foreground);
      this.ui = null;
   public void paint(Graphics g, JComponent c) {
      this.ui.paint( g, c );
   public void update(Graphics g, JComponent c) {
      this.ui.update( g, c );
   public Dimension getPreferredSize(JComponent c) {
      if ( this.ui == null ) {
         return super.getPreferredSize( c );
      return this.ui.getPreferredSize( c );
   public Dimension getMinimumSize(JComponent c) {
      if ( this.ui == null ) {
         return super.getMinimumSize( c );
      return this.ui.getMinimumSize( c );
   public Dimension getMaximumSize(JComponent c) {
      if ( this.ui == null ) {
         return super.getMaximumSize( c );
      return this.ui.getMaximumSize( c );
   public boolean contains(JComponent c, int x, int y) {
      if ( this.ui == null ) {
         return super.contains( c, x, y );
      return this.ui.contains( c, x, y );
   public int getAccessibleChildrenCount(JComponent c) {
      if ( this.ui == null ) {
         return super.getAccessibleChildrenCount( c );
      return this.ui.getAccessibleChildrenCount( c );
   public Accessible getAccessibleChild(JComponent c, int ii) {
      if ( this.ui == null ) {
         return super.getAccessibleChild( c, ii );
      return this.ui.getAccessibleChild( c, ii );
}File MyModButtonUI.java:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.plaf.*;
public class MyModButtonUI extends MyAuxButtonUI
   static KeyStroke spaceKeyStroke = KeyStroke.getKeyStroke(KeyEvent.VK_SPACE, 0 );
   public static ComponentUI createUI( JComponent c ) {
      return new MyModButtonUI();
   public void installUI(JComponent c) {
      super.installUI(c);
      c.setBackground(Color.CYAN);
      if ( c.isFocusable() ) {
         c.setFocusable(true);
//      final JButton button = (JButton) c;
//      button.getInputMap().put( spaceKeyStroke, "buttonexample.pressed" );
//      button.getActionMap().put( "buttonexample.pressed", new AbstractAction() {
//         public void actionPerformed(ActionEvent e) {
//            button.doClick();
//   public void uninstallUI(JComponent c) {
//      super.uninstallUI(c);
//      JButton button = (JButton) c;
//      button.getInputMap().remove( spaceKeyStroke );
//      button.getActionMap().remove( "buttonexample.pressed" );
}

here is the code used to change the current look and feel :
try {
               UIManager.setLookAndFeel("com.sun.java.swing.plaf.motif.MotifLookAndFeel");
         catch (InstantiationException e)
              System.out.println("Error occured "+ e.toString());
         catch (ClassNotFoundException e)
              System.out.println("Error occured "+ e.toString());
         catch (UnsupportedLookAndFeelException e)
              System.out.println("Error occured "+ e.toString());
         catch (IllegalAccessException e)
              System.out.println("Error occured in .. " + e.toString());
         Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
         Fenetre fen = new Fenetre();
         fen.setSize(dim.width, dim.height);
         fen.setResizable(false);
             fen.setLocation(0, 0);
              fen.setVisible(true);

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