Implementation of Autocomplete JComboBox in an applet

Can anybody help me in this problem:
A autocomplete JComboBox when integrated with an applet the key listener registered to the text editor of the JComboBox is not listening.Can anbody tell me why, it is not happening.
Thanks in advance.

Try this approach: http://www.orbital-computer.de/JComboBox

Similar Messages

JComboBox shows "Java Applet Window" as last element

Hey all,
I am having a problem with using JComboBox. When I use JComboBox and show it in a JDialog (popup window), the last element of the drop down (JComboBox) is "Java Applet Window". This element is, however, not selectable. I want to get rid fo the "Java Applet Window" in my dropdown.
This problem only happens when my applet opens up a JDialog that has the JComboBox, but does not happen when I add the JComboBox directly to the applet.
I've read around in other forums that this has to do with security. I understand the need to show that a popup window (JDialog) is an applet window so the user doesn't mistake it as one of the native windows. But, the JComboBox is not a whole 'nother window, so why does it feel the needs to add that last line to designate it as a "Java Applet Window?"
Thanks.
Nina.

My apologies, I did not clarify myself in my question. Sorry that I created misunderstandings of the problem - as evident in the response in the previous post from himanshug.
I am using JDK 1.3.1
I must use an applet, but all my components are standalone. They can be ran as a standalone application. But for deployment, we are using applets. It's easier to do applets so clients can access via browser than deploy a whole application installation on 50 machines halfway across the world.
And no, there is no element in my list that says "Java Applet Window". When running my application standalone, the "Java Applet Window" does not appear as the last element in my drop down.
The "Java Applet Window" also does NOT appear when I add the drop down directly to the applet. It only appears when the drop down is in a JDialog that gets launched by an applet.
My problem: How to get rid of the "Java Applet Window" as it seems something is adding this to my dropdown. And it's not my code that is adding it.
Thanks. I am also up'ing the duke dollars for a solution to this to 15.

AutoComplete JComboBox As JTable cell editor

Hello, when I try to use AutoComplete JComboBox as my JTable cell editor, I facing the following problem
1) Exception thrown when show pop up. - Exception in thread "AWT-EventQueue-0" java.awt.IllegalComponentStateException: component must be showing on the screen to determine its location
2) Unable to capture enter key event.
Here is my complete working code. With the same JComboBox class, I face no problem in adding it at JFrame. But when using it as JTable cell editor, I will have the mentioned problem.
Any advice? Thanks
import javax.swing.*;
import javax.swing.JTable.*;
import javax.swing.table.*;
import java.awt.event.*;
* @author yccheok
public class NewJFrame extends javax.swing.JFrame {
    /** Creates new form NewJFrame */
    public NewJFrame() {
        initComponents();
                /* Combo Box Added In JFrame. Work as expected. */
                final JComboBox comboBox = new JComboBox();
                comboBox.addItem("Snowboarding");
                comboBox.addItem("Rowing");
                comboBox.addItem("Chasing toddlers");
                comboBox.setEditable(true);
                comboBox.getEditor().getEditorComponent().addKeyListener(new KeyAdapter() {
                   public void keyReleased(KeyEvent e) {
                       if(e.getKeyCode() == KeyEvent.VK_ENTER) {
                           System.out.println("is enter");
                           return;
                       System.out.println("typed");
                       comboBox.setSelectedIndex(0);
                       comboBox.showPopup();
                getContentPane().add(comboBox, java.awt.BorderLayout.SOUTH);
    public JTable getMyTable() {
        return new JTable() {
             Combo Box Added In JTable as cell editor. Didn't work as expected:
             1. Exception thrown when show pop up.
             2. Unable to capture enter key event.
            public TableCellEditor getCellEditor(int row, int column) {
                final JComboBox comboBox = new JComboBox();
                comboBox.addItem("Snowboarding");
                comboBox.addItem("Rowing");
                comboBox.addItem("Chasing toddlers");
                comboBox.setEditable(true);
                comboBox.getEditor().getEditorComponent().addKeyListener(new KeyAdapter() {
                   public void keyReleased(KeyEvent e) {
                       if(e.getKeyCode() == KeyEvent.VK_ENTER) {
                           System.out.println("is enter");
                           return;
                       System.out.println("typed");
                       comboBox.setSelectedIndex(0);
                       comboBox.showPopup();
                return new DefaultCellEditor(comboBox);
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">
    private void initComponents() {
        jScrollPane1 = new javax.swing.JScrollPane();
        jTable1 = getMyTable();
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        jTable1.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {
                {null, null, null, null},
                {null, null, null, null},
                {null, null, null, null},
                {null, null, null, null}
            new String [] {
                "Title 1", "Title 2", "Title 3", "Title 4"
        jScrollPane1.setViewportView(jTable1);
        getContentPane().add(jScrollPane1, java.awt.BorderLayout.CENTER);
        pack();
    }// </editor-fold>
     * @param args the command line arguments
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new NewJFrame().setVisible(true);
    // Variables declaration - do not modify
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTable jTable1;
    // End of variables declaration
}

You need to create a custom CellEditor which will prevent these problems from occurring. The explanation behind the problem and source code for the new editor can be found at Thomas Bierhance's site http://www.orbital-computer.de/JComboBox/. The description of the problem and the workaround are at the bottom of the page.

Implementing listener in JcomboBox

I am trying to create JcomboBox in which its item are
a)1
b)2
so that when a user click on 1. In a JTextField called "add"the content of textfield should be increased by 1 and when 2 is clicked content of textfield should be increased by 2
thanx

http://java.sun.com/docs/books/tutorial/uiswing/components/combobox.html
HTH!

Stopping cell editing in a JTable using a JComboBox editor w/ AutoComplete

Hi there! Me again with more questions!
I'm trying to figure out the finer parts of JTable navigation and editing controls. It's getting a bit confusing. The main problem I'm trying to solve is how to make a JTable using a combo box editor stop editing by hitting the 'enter' key in the same fashion as a JTextField editor. This is no regular DefaultCellEditor though -- it's one that uses the SwingX AutoCompleteDecorator. I have an SSCCE that demonstrates the issue:
import java.awt.Component;
import java.awt.EventQueue;
import javax.swing.AbstractCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JTable;
import javax.swing.WindowConstants;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableModel;
import org.jdesktop.swingx.autocomplete.AutoCompleteDecorator;
public class AutoCompleteCellEditorTest extends JFrame {
public AutoCompleteCellEditorTest() {
    JTable table = new JTable();
    Object[] items = {"A", "B", "C", "D"};
    TableModel tableModel = new DefaultTableModel(2, 2);
    table.setModel(tableModel);
    table.getColumnModel().getColumn(0).setCellEditor(new ComboCellEditor(items));
    getContentPane().add(table);
    setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    pack();
private class ComboCellEditor extends AbstractCellEditor implements TableCellEditor {
    private JComboBox comboBox;
    public ComboCellEditor(Object[] items) {
      this.comboBox = new JComboBox(items);
      AutoCompleteDecorator.decorate(this.comboBox);
    public Object getCellEditorValue() {
      return this.comboBox.getSelectedItem();
    public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
      comboBox.setSelectedItem(value);
      return comboBox;
public static void main(String[] args) {
    EventQueue.invokeLater(new Runnable() {
      public void run() {
        new AutoCompleteCellEditorTest().setVisible(true);
}Problem 1: Starting to 'type' into the AutoCompleteDecorate combo box doesn't cause it to start editing. You have to hit F2, it would appear. I've also noticed this behaviour with other JComboBox editors. Ideally that would be fixed too. Not sure how to do this one.
Problem 2: After editing has started (say, with the F2 key), you may start typing. If you type one of A, B, C, or D, the item appears. That's all good. Then you try to 'complete' the edit by hitting the 'enter' key... and nothing happens. The 'tab' key works, but it puts you to the next cell. I would like to make the 'enter' key stop editing, and stay in the current cell.
I found some stuff online suggesting you take the input map of the table and set the Enter key so that it does the same thing as tab. Even though that's not exactly what I desired (I wanted the same cell to be active), it didn't work anyway.
I also tried setting a property on the JComboBox that says that it's a table cell editor combo box (just like the DefaultCellEditor), but that didn't work either. I think the reason that fails is because the AutoCompleteDecorator sets isEditable to true, and that seems to stop the enter key from doing anything.
After tracing endless paths through processKeyBindings calls, I'm not sure I'm any closer to a solution. I feel like this should be a fairly straightforward thing but I'm having a fair amount of difficulty with it.
Thanks for any direction you can provide!

Hi Jeanette,
Thanks for your advice. I looked again at the DefaultCellEditor. You are correct that I am not firing messages for fireEditingStopped() and fireEditingCancelled(). Initially I had copied the behaviour from DefaultCellEditor but had trimmed it out. I assumed that since I was extending AbstractCellEditor and it has them implemented correctly that I was OK. But I guess that's not the case! The problem I'm having with implementing the Enter key stopping the editing is that:
1) The DefaultCellEditor stops cell editing on any actionPerformed. Based on my tests, actionPerformed gets called whenever a single key gets pressed. I don't want to end the editing on the AutoCompleteDecorated box immediately -- I'd like to wait until the user is happy with his or her selection and has hit 'Enter' before ending cell editing. Thus, ending cell editing within the actionPerformed listener on the JComboBox (or JXComboBox, as I've made it now) will not work. As soon as you type a single key, if it is valid, the editing ends immediately.
2) I tried to add a key listener to the combo box to pick up on the 'Enter' key and end the editing there. However, it appears that the combo box does not receive the key strokes. I guess they're going to the AutoCompleteDecorator and being consumed there so the combo box does not receive them. If I could pick up on the 'Enter' key there, then that would work too.
I did more reading about input maps and action maps last night. Although informative, I'm not sure how far it got me with this problem because if the text field in the AutoCompleteDecorator takes the keystroke, I'm not sure how I'm going to find out about it in the combo box.
By the way, when you said 'They are fixed... in a recent version of SwingX', does that mean 1.6.2? That's what I'm using.
Thanks!
P.S. - Maybe I should create a new question for this? I wanted to mark your answer as helpful but I already closed the thread by marking the answer to the first part as correct. Sorry!
Edited by: aardvarkk on Jan 27, 2011 7:41 AM - Added SwingX versioning question.

How to implement autocomplete in a search form?

Hi all,
I´m trying to implement the autocomplete in a search form but I think I'm missing something in content server...
Is there a simple away to do it in content server?
With PHP it doesn´t work in content server, right?
Where can I find a good tutorial about that?
Thank you in advance,
RRS

Here's a really good one and I know it works on UCM:
http://developer.yahoo.com/yui/autocomplete/
cheers

Extending Applet implements Runnable    --explain

kindly give an explanation of the need to use the
<extends Applet implements Runnable > code
while creating an applet program is there a need to use both Applets and Runnable
wht are the methods available in Applet class
and Runnable interface

The most common use of the Runnable interface is for threading.
An applet doesn't need to implement Runnable to be run as an Applet, but an applet often needs to be doing things in the background, not just when specific user events like init, start, mouse events etc. come in. For example the applet might run some kind of animation.
An applet should return promptly from events of the above sort, allowing the browser to get on with it's own business. If it is to do something itself one of these events needs to start a thread.
Declaring the Applet runnable allows you to do something like:
new Thread(this).start();for example in the init method. This starts a new thread of execution which runs the run method of the applet, which will do the background activity.
You don't have to do it this way, you can create another Runnable object whose run method will be executed by the thread. Often you use anonymous classes for this e.g.
new Thread(new Runnable() {
   public void run() {
          doBackgroudStuff();
    }).start();

How do you set the number of visible items in the popup box of a JComboBox?

Hi,
Do you know how to set the number of items that shall be visible in the popup box of a JComboBox?
I have produced an implementation of an autocomplete JComboBox such that following each character typed in the text field, the popup box is repopulated with items. Normally 8 items are visible when showing the popup box. Sometimes even though the list of items is > 8 the popup box shrinks in height so that 8 items are not visible.
Thanks,
Simon

Below is my JComboBox autocomplete implementation.
The problem seems to occur when the list of items is reduced in number, the button selected and then the list size increased, the popup box does not automatically increase in size. I have tried setMaximumRowCount � but does not resolve the problem.
To see how it works:
1)     click in text field.
2)     Type 1 � the full list of items are shown.
3)     Type 0 � the list has been narrowed down � the popup box is greyed out for remaining items.
4)     Type Backspace � the full list of items is redisplayed.
5)     Type 0 � to narrow down the list.
6)     Select button � the popup box is invisible.
7)     Select button � the popup box is displayed with 2 items.
8)     Select Backspace � here is the problem � the combo box list contains all items but the popup box has been shrunk so that only 2 are visible.
9)     Select button � popup box is invisible.
10)     Select button � popup box is as expected.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.tree.*;
import java.util.Enumeration;
import java.util.Vector;
import javax.swing.plaf.basic.*;
class Test
private JComboBox jCB = null;
private JTextField jTF=null;
private String typed="";
private Vector vector=new Vector();
public Test()
JFrame fr=new JFrame("TEST ComboBox");
JPanel p = new JPanel();
p.setLayout( new BorderLayout() );
ComboBoxEditor anEditor = new BasicComboBoxEditor();
String[] s = new String[30];
for (int i=0; i<30; i++) {
s[i] = (new Integer(i+10)).toString();
jTF=(JTextField)anEditor.getEditorComponent();
jTF.addKeyListener(new KeyAdapter()
public void keyReleased( KeyEvent ev )
char key=ev.getKeyChar();
if (! (Character.isLetterOrDigit(key)
||Character.isSpaceChar(key)
|| key == KeyEvent.VK_BACK_SPACE )) return;
typed="";
typed=jTF.getText();
fillCB(vector);
jCB.showPopup();
jCB = new JComboBox();
jCB.setEditor(anEditor);
jCB.setEditable(true);
boolean ins;
for (int x=0; x<30; x++)
ins = vector.add( new String(s[x]) );
fillCB(vector);
jCB.setSelectedIndex(-1);
fr.getContentPane().add(p);
p.add("South",jCB);
p.add("Center",new JButton("test combo box"));
fr.pack();
fr.show();
public void fillCB(Vector vector)
typed = typed.trim();
String typedUp = typed.toUpperCase();
jCB.removeAllItems();
jCB.addItem("Please select");
for(Enumeration enu = vector.elements(); enu.hasMoreElements();) {
String s = (String)enu.nextElement();
if (s.toUpperCase().startsWith(typedUp)) {
jCB.addItem(s);
jTF.setText(typed);
public static void main( String[] args )
Test test=new Test();
Many thanks,
Simon

Not Updating the Values in the JComboBox and JTable

Hi Friends
In my program i hava Two JComboBox and One JTable. I Update the ComboBox with different field on A Table. and then Display a list of record in the JTable.
It is Displaying the Values in the Begining But when i try to Select the Next Item in the ComboBox it is not Updating the Records Eeither to JComboBox or JTable.
MY CODE is this
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.DefaultComboBoxModel.*;
import javax.swing.table.*;
import java.sql.*;
import java.util.*;
public class SearchBook extends JDialog implements ActionListener
     private JComboBox comboCategory,comboAuthor;
     private JSplitPane splitpane;
     private JTable table;
     private JToolBar toolBar;
     private JButton btnclose, btncancel;
     private JPanel panel1,panel2,panel3,panel4;
     private JLabel lblCategory,lblAuthor;
     private Container c;
     //DefaultTableModel model;
     Statement st;
     ResultSet rs;
     Vector v = new Vector();
     public SearchBook (Connection con)
          // Property for JDialog
          setTitle("Search Books");
          setLocation(40,110);
          setModal(true);
          setSize(750,450);
          // Creating ToolBar Button
          btnclose = new JButton(new ImageIcon("Images/export.gif"));
          btnclose.addActionListener(this);
          // Creating Tool Bar
          toolBar = new JToolBar();
          toolBar.add(btnclose);
          try
               st=con.createStatement();
               rs =st.executeQuery("SELECT BCat from Books Group By Books.BCat");
               while(rs.next())
                    v.add(rs.getString(1));
          catch(SQLException ex)
               System.out.println("Error");
          panel1= new JPanel();
          panel1.setLayout(new GridBagLayout());
          GridBagConstraints c = new GridBagConstraints();
          c.fill = GridBagConstraints.HORIZONTAL;
          lblCategory = new JLabel("Category:");
          lblCategory.setHorizontalAlignment (JTextField.CENTER);
          c.gridx=2;
          c.gridy=2;
          panel1.add(lblCategory,c);
          comboCategory = new JComboBox(v);
          comboCategory.addActionListener(this);
          c.ipadx=20;
          c.gridx=3;
          c.gridwidth=1;
          c.gridy=2;
          panel1.add(comboCategory,c);
          lblAuthor = new JLabel("Author/Publisher:");
          c.gridwidth=2;
          c.gridx=1;
          c.gridy=4;
          panel1.add(lblAuthor,c);
          lblAuthor.setHorizontalAlignment (JTextField.LEFT);
          comboAuthor = new JComboBox();
          comboAuthor.addActionListener(this);
          c.insets= new Insets(20,0,0,0);
          c.ipadx=20;
          c.gridx=3;
          c.gridy=4;
          panel1.add(comboAuthor,c);
          comboAuthor.setBounds (125, 165, 175, 25);
          table = new JTable();
          JScrollPane scrollpane = new JScrollPane(table);
          //panel2 = new JPanel();
          //panel2.add(scrollpane);
          splitpane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,panel1,scrollpane);
          splitpane.setDividerSize(15);
          splitpane.setDividerLocation(190);
          getContentPane().add(toolBar,BorderLayout.NORTH);
          getContentPane().add(splitpane);
     public void actionPerformed(ActionEvent ae)
          Object obj= ae.getSource();
          if(obj==comboCategory)
               String selecteditem = (String)comboCategory.getSelectedItem();
               displayAuthor(selecteditem);
               System.out.println("Selected Item"+selecteditem);
          else if(obj==btnclose)
               setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
          else if(obj==comboAuthor)
               String selecteditem1 = (String)comboAuthor.getSelectedItem();
               displayavailablity(selecteditem1);
               //System.out.println("Selected Item"+selecteditem1);
               System.out.println("Selected Author"+selecteditem1);
     private void displayAuthor(String selecteditem)
          try
          {     Vector data = new Vector();
               rs= st.executeQuery("SELECT BAuthorandPublisher FROM Books where BCat='" + selecteditem + "' Group By Books.BAuthorandPublisher");
               System.out.println("Executing");
               while(rs.next())
                    data.add(rs.getString(1));
               //((DefaultComboBoxModel)comboAuthor.getModel()).setVectorData(data);
               comboAuthor.setModel(new DefaultComboBoxModel(data));
          catch(SQLException ex)
               System.out.println("ERROR");
     private void displayavailablity(String selecteditem1)
               try
                    Vector columnNames = new Vector();
                    Vector data1 = new Vector();
                    rs= st.executeQuery("SELECT * FROM Books where BAuthorandPublisher='" + selecteditem1 +"'");
                    ResultSetMetaData md= rs.getMetaData();
                    int columns =md.getColumnCount();
                    String booktblheading[]={"Book ID","Book NAME","BOOK AUTHOR/PUBLISHER","REFRENCE","CATEGORY"};
                    for(int i=1; i<= booktblheading.length;i++)
                         columnNames.addElement(booktblheading[i-1]);
                    while(rs.next())
                         Vector row = new Vector(columns);
                         for(int i=1;i<=columns;i++)
                              row.addElement(rs.getObject(i));
                         data1.addElement(row);
                         //System.out.println("data is:"+data);
                    ((DefaultTableModel)table.getModel()).setDataVector(data1,columnNames);
                    //DefaultTableModel model = new DefaultTableModel(data1,columnNames);
                    //table.setModel(model);
                    rs.close();
                    st.close();
               catch(SQLException ex)
}Please check my code and give me some Better Solution
Thank you

You already have a posting on this topic:
http://forum.java.sun.com/thread.jspa?threadID=5143235

How to change font/ font color etc in a graphic object using JCombobox?

Hello
My program im writing recently is a small tiny application which can change fonts, font sizes, font colors and background color of the graphics object containing some strings. Im planning to use Jcomboboxes for all those 4 ideas in implementing those functions. Somehow it doesnt work! Any help would be grateful.
So currently what ive done so far is that: Im using two classes to implement the whole program. One class is the main class which contains the GUI with its components (Jcomboboxes etc..) and the other class is a class extending JPanel which does all the drawing. Therefore it contains a graphics object in that class which draws the string. However what i want it to do is using jcombobox which should contain alit of all fonts available/ font sizes/ colors etc. When i scroll through the lists and click the one item i want - the graphics object properties (font sizes/ color etc) should change as a result.
What ive gt so far is implemented the jcomboboxes in place. Problem is i cant get the font to change once selecting an item form it.
Another problem is that to set the color of font - i need to use it with a graphics object in the paintcomponent method. In this case i dnt want to create several diff paint.. method with different property settings (font/ size/ color)
Below is my code; perhaps you'll understand more looking at code.
public class main...
Color[] Colors = {Color.BLUE, Color.RED, Color.GREEN};
        ColorList = new JComboBox(Colors);
ColorList.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent ev) {
                 JComboBox cb = (JComboBox)ev.getSource();
                Color colorType = (Color)cb.getSelectedItem();
                drawingBoard.setBackground(colorType);
          });;1) providing the GUI is correctly implemented with components
2) Combobox stores the colors in an array
3) ActionListener should do following job: (but cant get it right - that is where my problem is)
- once selected the item (color/ font size etc... as i would have similar methods for each) i want, it should pass the item into the drawingboard class (JPanel) and then this class should do the job.
public class DrawingBoard extends JPanel {
       private String message;
       public DrawingBoard() {
              setBackground(Color.white);
              Font font = new Font("Serif", Font.PLAIN, fontSize);
              setFont(font);
              message = "";
       public void setMessage(String m) {
            message = m;
            repaint();
       public void paintComponent(Graphics g) {
              super.paintComponent(g);
              //setBackground(Color.RED);
              Graphics2D g2 = (Graphics2D) g;
              g2.setRenderingHint
              g2.drawString(message, 50, 50);
       public void settingFont(String font) {
            //not sure how to implement this?                          //Jcombobox should pass an item to this
                               //it should match against all known fonts in system then set that font to the graphics
      private void settingFontSize(Graphics g, int f) {
                     //same probelm with above..
      public void setBackgroundColor(Color c) {
           setBackground(c);
           repaint(); // still not sure if this done corretly.
      public void setFontColor(Color c) {
                //not sure how to do this part aswell.
               //i know a method " g.setColor(c)" exist but i need to use a graphics object - and to do that i need to pass it in (then it will cause some confusion in the main class (previous code)
       My problems have been highlighted in the comments of code above.
Any help will be much appreciated thanks!!!

It is the completely correct code
I hope that's what you need
Just put DrawingBoard into JFrame and run
Good luck!
public class DrawingBoard extends JPanel implements ActionListener{
     private String message = "message";
     private Font font = new Font("Serif", Font.PLAIN, 10);
     private Color color = Color.RED;
     private Color bg = Color.WHITE;
     private int size = 10;
     public DrawingBoard(){
          JComboBox cbFont = new JComboBox(GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames());
          cbFont.setActionCommand("font");
          JComboBox cbSize = new JComboBox(new Integer[]{new Integer(14), new Integer(13)});
          cbSize.setActionCommand("size");
          JComboBox cbColor = new JComboBox(new Color[]{Color.BLUE, Color.RED, Color.GREEN});
          cbColor.setActionCommand("color");
          JComboBox cbBG = new JComboBox(new Color[]{Color.BLUE, Color.RED, Color.GREEN});
          cbBG.setActionCommand("bg");
          add(cbFont);
          cbFont.addActionListener(this);
          add(cbSize);
          cbSize.addActionListener(this);
          add(cbColor);
          cbColor.addActionListener(this);
          add(cbBG);
          cbBG.addActionListener(this);
     public void setMessage(String m){
          message = m;
          repaint();
     protected void paintComponent(Graphics g){
          super.paintComponent(g);
          Graphics2D g2 = (Graphics2D)g;
          g2.setColor(bg);//set background color
          g2.fillRect(0,0, getWidth(), getHeight());
          g2.setColor(color);//set text color
          FontRenderContext frc = g2.getFontRenderContext();
          TextLayout tl = new TextLayout(message,font,frc);//set font and message
          AffineTransform at = new AffineTransform();
          at.setToTranslation(getWidth()/2-tl.getBounds().getWidth()/2,
                    getWidth()/2 + tl.getBounds().getHeight()/2);//set text at center of panel
          g2.fill(tl.getOutline(at));
     public void actionPerformed(ActionEvent e){
          JComboBox cb = (JComboBox)e.getSource();
          if (e.getActionCommand().equals("font")){
               font = new Font(cb.getSelectedItem().toString(), Font.PLAIN, size);
          }else if (e.getActionCommand().equals("size")){
               size = ((Integer)cb.getSelectedItem()).intValue();
          }else if (e.getActionCommand().equals("color")){
               color = (Color)cb.getSelectedItem();
          }else if (e.getActionCommand().equals("bg")){
               bg = (Color)cb.getSelectedItem();
          repaint();
}

Problem with JComboBox in aTable Cell

I try to put JComboBox in JTableCell,
what i want to do is something like this...
Question | Answer |
1. what is your favourite | a. Pizza |
food? | b. Hot Dog |
2. what is your favourite | a. red |
color? | b. blue |
Object[][] data = {
{"1.What is your favourite food?", new AnswerChoices(new String[]{"a.Pizza","b.Hot Dog"})},
{"2.What is your favourite color?", new AnswerChoices(new String[]{"a.red","b.blue"})}
here my code;
//class AnswerChoicesCellEditor
import javax.swing.table.*;
import javax.swing.*;
import java.awt.Component;
import java.awt.event.MouseEvent;
import java.util.EventObject;
import de.falcom.table.*;
public class AnswerChoicesCellEditor extends AbstractCellEditor implements TableCellEditor{
     protected JComboBox mComboBox;
public AnswerChoicesCellEditor(){
     mComboBox = new JComboBox();
     mComboBox.addActionListener(this);
     mComboBox.setEditable(false);
public Component getTableCellEditorComponent(JTable table,Object value,boolean isSelected,int row,int column){
     if(value instanceof AnswerChoices){
          AnswerChoices a = (AnswerChoices)value;
          String[] c = a.getChoices();
          mComboBox.removeAllItems();
          for(int i=0; i < c.length; i++)
               mComboBox.addItem(c);
               mComboBox.setSelectedIndex(a.getAnswer());
     return mComboBox;
public Object getCellEditorValue(){
     int nchoices = mComboBox.getItemCount();
     String[] c = new String[nchoices];
     for(int i = 0; i<nchoices; i++){
          c[i] = mComboBox.getItemAt(i).toString();
     return new AnswerChoices(c,mComboBox.getSelectedIndex());
     //return mComboBox.getSelectedItem(); //here i get but after selection there is no comboBox in tableCell
//the Renderer class
import javax.swing.table.TableCellRenderer;
import javax.swing.*;
import java.awt.Component;
public class AnswerChoicesCellRenderer extends JComboBox implements TableCellRenderer {
     private Object curValue;
/** Creates new AnswerChoiceCellRenderer */
public AnswerChoicesCellRenderer() {
setEditable(false);
public Component getTableCellRendererComponent(JTable table,Object value,boolean isSelected,boolean hasFocus,int row,int column) {
if (value instanceof AnswerChoices) {
AnswerChoices nl = (AnswerChoices)value;
String[] tList = nl.getChoices();
if (tList != null) {
removeAllItems();
for (int i=0; i<tList.length; i++)
addItem(tList[i]);
     setSelectedIndex(AnswerChoices.getAnswer());
     //this.setSelectedItem();
//return this;
//this.getTableCellRendererComponent(table,value,isSelected,hasFocus,row,column);
if (table != null)
if (table.isCellEditable(row, column))
setForeground(CellRendererConstants.EDITABLE_COLOR);
else
setForeground(CellRendererConstants.UNEDITABLE_COLOR);
          setBackground(table.getBackground());
return this;
public class AnswerChoices {
     static int ans = 0;
     String[] choices ;
public AnswerChoices(String[]c,int a){
          choices = c;
          ans          = a;
public AnswerChoices(String[] c){
          this(c,0);
public String[] getChoices(){
     return choices;
public void setAnswer(int a){
     ans = a;
public static int getAnswer(){
     return ans;
//the TableModel i used in my app
import java.awt.Color;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import javax.swing.table.TableModel;
import javax.swing.*;
public class FAL_Table extends JTable {
/** Creates new FAL_Table */
public FAL_Table(DefaultTableModel dtm) {
super(dtm);
setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
setRowSelectionAllowed(false);
setColumnSelectionAllowed(false);
setBackground(java.awt.Color.white);
setDefaultCellEditorRenderer();
private void setDefaultCellEditorRenderer(Class forClass, TableCellEditor editor, TableCellRenderer renderer) {
     setDefaultEditor(forClass, editor);
     setDefaultRenderer(forClass, renderer);
     private void setDefaultCellEditorRenderer() {
          // Setting default editor&renderer of Boolean
          setDefaultCellEditorRenderer(Boolean.class, new BooleanCellEditor(), new BooleanCellRenderer());
          //Setting default editor&renderer of ComboBox
          setDefaultCellEditorRenderer(JComboBox.class, new ComboBoxCellEditor( ),new ComboBoxRenderer());
          // Number class
          // Setting default editor&renderer of java.math.BigDecimal
          setDefaultCellEditorRenderer(java.math.BigDecimal.class,new NumberCellEditor(), new NumberCellRenderer());
          // Setting default editor&renderer of java.math.BigInteger
          setDefaultCellEditorRenderer(java.math.BigInteger.class,new NumberCellEditor(), new NumberCellRenderer());
          // Setting default editor&renderer of java.lang.Byte
          setDefaultCellEditorRenderer(Byte.class,new NumberCellEditor(), new NumberCellRenderer());
          // Setting default editor&renderer of Double
          setDefaultCellEditorRenderer(Double.class,new NumberCellEditor(), new NumberCellRenderer());
          // Setting default editor&renderer of Float
          setDefaultCellEditorRenderer(Float.class,new NumberCellEditor(), new NumberCellRenderer());
          // Setting default editor&renderer of Integer
          setDefaultCellEditorRenderer(Integer.class,new NumberCellEditor(), new NumberCellRenderer());
          // Setting default editor&renderer of Long
          setDefaultCellEditorRenderer(Long.class,new NumberCellEditor(), new NumberCellRenderer());
          // Setting default editor&renderer of Short
          setDefaultCellEditorRenderer(Short.class,new NumberCellEditor(), new NumberCellRenderer());
          // Setting default editor&renderer of String
          setDefaultCellEditorRenderer(String.class,new StringCellEditor(), new StringCellRenderer());
          // Setting default editor&renderer of FileName
          setDefaultCellEditorRenderer(FileName.class,new FileNameCellEditor(), new FileNameCellRenderer());
          // Setting default editor&renderer of Color
          setDefaultCellEditorRenderer(Color.class,new ColorCellEditor(), new ColorCellRenderer());
          setDefaultCellEditorRenderer(AnswerChoices.class, new AnswerChoicesCellEditor(), new AnswerChoicesCellRenderer());
          setDefaultCellEditorRenderer(JSpinner.class, new SpinnerCellEditor(), new SpinnerRenderer());
public Class getCellClass(int row,int col) {
TableModel model = getModel();
if (model instanceof FAL_TableModel) {
FAL_TableModel ptm = (FAL_TableModel)model;
return ptm.getCellClass(row,convertColumnIndexToModel(col));
return model.getColumnClass(convertColumnIndexToModel(col));
public TableCellRenderer getCellRenderer(int row, int column) {
TableColumn tableColumn = getColumnModel().getColumn(column);
TableCellRenderer renderer = tableColumn.getCellRenderer();
if (renderer == null) {
renderer = getDefaultRenderer(getCellClass(row,column));
return renderer;
public TableCellEditor getCellEditor(int row, int column) {
TableColumn tableColumn = getColumnModel().getColumn(column);
TableCellEditor editor = tableColumn.getCellEditor();
if (editor == null) {
editor = getDefaultEditor(getCellClass(row,column));
return editor;
import javax.swing.table.*;
import java.util.Vector;
import java.awt.event.MouseEvent;
import java.util.EventObject;
public class FAL_TableModel extends DefaultTableModel implements TableModel {
public FAL_TableModel() {
this((Vector)null, 0);
public FAL_TableModel(int numRows, int numColumns) {
super(numRows,numColumns);
public FAL_TableModel(Vector columnNames, int numRows) {
super(columnNames,numRows);
public FAL_TableModel(Object[] columnNames, int numRows) {
super(convertToVector(columnNames), numRows);
public FAL_TableModel(Vector data, Vector columnNames) {
setDataVector(data, columnNames);
public FAL_TableModel(Object[][] data, Object[] columnNames) {
setDataVector(data, columnNames);
     public boolean isCellEditable(int row, int col) {
//Note that the data/cell address is constant,
//no matter where the cell appears onscreen.
Object obj = getValueAt(row,col);
if (col != 1){
return false;
     }else{
          return true;
public Class getCellClass(int row,int col) {
Object obj = getValueAt(row,col);
if (obj != null)
     return obj.getClass();
     else
     return Object.class;
public Object getCellValue(int row,int col) {
Object obj = getValueAt(row,col);
          return obj;
my problem is, when i select an item from one of the comboBox in the table the value of the other cells changes too and i have the same problem with JSpinner.
please help i am stuck
Gebi

and when i try to get the current value oa a cell it returns the Component class like this
AnswerChoices@bf1f20 ...

How to clear Autocomplete text in Jquery.

Hi All,
I have implemented a Autocomplete text item using jquery.Every thing looks fine, but when we clear the country the corresponding state should be cleared.
Here is the code, can any body hep me out where and how to clear the values.
<script type="text/javascript">
$( function() {
    $("#P16_ENG_CTRY").autocomplete({
        source : function( request , response) {
                        data = getCountry(request.term);
                        response( data );
        focus : function(event , ui){
                    event.preventDefault();
function getCountry(key)
   document.getElementById('P16_ENG_CTRY')=='';
   var ajaxRequest = new htmldb_Get( null , '&APP_ID.' , 'APPLICATION_PROCESS=GET_COUNTRY' , 0);
   ajaxRequest.add( 'G_MX01' , key);
   ajaxResult = ajaxRequest.get();
   return ((ajaxResult.length>0)? ajaxResult.split( '~' ):null);
$( function() {
    $("#P16_ENG_STATE").autocomplete({
        source : function( request , response) {
                        data = getStateJ(request.term);
                        response( data );
        focus : function(event , ui){
                    event.preventDefault();
function getStateJ(key)
document.getElementById('P16_ENG_STATE')=='';
      var ajaxRequest = new htmldb_Get( null , '&APP_ID.' , 'APPLICATION_PROCESS=GET_JSTATE' , 0);
          ajaxRequest.add('G_MX01',document.getElementById('P16_ENG_CTRY').value);
          ajaxRequest.add( 'G_MX03' , key);
          ajaxResult = ajaxRequest.get();
   return ((ajaxResult.length>0)? ajaxResult.split( '~' ):null);
$( function() {
    $("#P16_ENG_CITY").autocomplete({
        source : function( request , response) {
                        data = getCityJ(request.term);
                        response( data );
        focus : function(event , ui){
                    event.preventDefault();
});Thanks,
Anoo..

Thanks VC for a quick turn around, i have made changes like this which wroks fine but when i click the event outside then it is clearing the list fo state.
Is it possible to clear when i had tried to remove the country manually the sate should clear at at time insted of click the event.
<script type="text/javascript">
$( function() {
    $("#P16_ENG_CTRY").autocomplete({
        source : function( request , response) {
                        data = getCountry(request.term);
                        response( data );
        focus : function(event , ui){
                    event.preventDefault();
        change : function(event,ui) {
                 if ($('P16_ENG_CTRY').val()==null || $('P16_ENG_CTRY').val()==""){
              $("#P16_ENG_STATE").val('');}}
Thanks,
Anoo..

How to change background color in AutoComplete window ?

Is it possible to change background color in AutoComplete window ?

Bob, A.Ankit, you're both chasing a ghost here.
The screenshot shows an autocomplete enabled textbox with its dropdown list of autocomplete values to choose from. There is no property defining its backcolor. Not in the textbox nor in any class, neither any other baseclass nor _combobox of _base.vcx
The only way to chnage that color is not recommended, via changing windows theme colors. That would effect any window and control.
If you need another color even turning off themes won't help as VFP doesn't offer any property controlling that color, so you really would need to implement the autocomplete feature yourself, if you want the specify this backcolor.
Bye, Olaf.
Olaf Doschke - TMN Systemberatung GmbH http://www.tmn-systemberatung.de

Events in a SIM toolkit applet

Hi,
I am looking at some sample (and simple) code:
public MyApplet() {
          // Define the applet Menu Entry
          idMenu1 = reg.initMenuEntry(Menu1, (short) 0, (short) Menu1.length,
                    PRO_CMD_SELECT_ITEM, false, (byte) 0, (short) 0);
          // Define the Unformatted SMS PP event that trigger the applet
          reg.setEvent(EVENT_UNFORMATTED_SMS_PP_ENV);
public void processToolkit(byte event) {
          EnvelopeHandler envHdlr = EnvelopeHandler.getTheHandler();
          if (event == EVENT_MENU_SELECTION) {
               byte selectedItemId = envHdlr.getItemIdentifier();
               if (selectedItemId == idMenu1) {
                    menu1Action();
          if (event == EVENT_UNFORMATTED_SMS_PP_ENV) {
               UnformattedSmsPpAction();
In processToolkit we procees EVENT_MENU_SELECTION and EVENT_UNFORMATTED_SMS_PP_ENV, yet in the ctor we subscribed only for the latter. Does that mean that it is not necessary to subscribe to EVENT_MENU_SELECTION and that this event is always delivered to the applet (that created the menu)?

For UICC, SIM etc check this link: [http://en.wikipedia.org/wiki/UICC]
For ETSI, 3GPP etc., this is where it gets confusing, you should do the research for yourself. As for using the latest specification, you actually want to use the specification your card complies to, i.e. if the card is old it may not comply with the latest specifications.
Regarding Java applets and toolkit applets:
To send commands to a Java applet you first select (see GlobalPlatform standard) it and then you send it some APDUs as specified in the 7816-4 and GlobalPlatform standards. You can also implement custom APDUs that only your applet will recognize.
The toolkit applets are Java applets, you can send them APDUs (first you select them) as well. The difference is that toolkit applets can also receive events from the mobile phone like SMS received or user selected some menu. You can also send commands to the phone to display text, menus etc.
A Java applet can do what a toolkit applet does, but to implement it yourself you be very hard. The Java API that is used in toolkit applet programming provides facilities to (for example) show something on the phone's display without sending and receiving heaps of APDUs.
If your card will be used in a mobile phone then you write a toolkit applet (to which you can still send APDUs if you have to). If your card will be used for something else, like access card or a bank card then you don't need toolkit applet functionality.
The biggest problem with this technology that there are almost no books, only the standards, which you do have to read, and forums.

Trying to add a listener to a JComboBox in a JTable

Hi all.
I have a little problem which I can't resolve.
I made a program in which I create a table using a class which extends JTable (but this isn't the point with the problem, I think. It's only for rendering purposes)
In this table I put various types of items (such as Strings, JButton, JComboBox). I have no problem with the visualization of them, but the problem is with the listener for the combo boxes. I created a listener of my own and registered it in the constructor of the combo box editor, but when I change a value it's never fired. Can someone please help me?
Here's some code which can help understanding the problem
Combo box editor:
public class MyComboBoxEditor extends DefaultCellEditor{
public MyComboBoxEditor(JTableX _tabellaDiAppartenenza) {
super(new JComboBox());
(JComboBox)super.editorComponent).addItemListener(new MyItemListener((JComboBox)super.editorComponent));
public Component getTableCellEditorComponent(JTable arg0, Object arg1, boolean arg2, int arg3, int arg4) {
String elementi[]=new String[((JComboBox)arg1).getItemCount()];
for(int i=0;i<((JComboBox)arg1).getItemCount();i++){
elementi=(String)((JComboBox)arg1).getItemAt(i);
super.editorComponent=new JComboBox(elementi);
return super.getTableCellEditorComponent(arg0, arg1, arg2, arg3, arg4);
}combo box listener:public class MyItemListener implements ItemListener{
private JComboBox combo;
public MyItemListener(JComboBox object){
combo=object;
public void itemStateChanged(ItemEvent arg0) {
int changeEvent = arg0.getStateChange();
if(changeEvent==ItemEvent.SELECTED){
Object value=arg0.getItem();
combo.setSelectedItem(value);
}table:public class JTableX extends JTable{
protected MyCellEditorModel myCellEditorModel;
public JTableX(MyDataModel tm){
super(tm);
Object ge = defaultEditorsByColumnClass.get(Boolean.class);
DefaultCellEditor dce = (DefaultCellEditor)ge;
dce.setClickCountToStart(0);
MyButtonEditor mbe = new MyButtonEditor(new JCheckBox("Bottone"), this);
mbe.setClickCountToStart(0);
MyComboBoxEditor mcbe = new MyComboBoxEditor(this);
mcbe.setClickCountToStart(0);
defaultEditorsByColumnClass.clear();
Hashtable cellEditors = new Hashtable();
cellEditors.put(JButton.class, mbe);
cellEditors.put(JComboBox.class, mcbe);
cellEditors.put(Boolean.class, dce);
this.defaultRenderersByColumnClass.put(JButton.class, new MyButtonRenderer());
this.defaultRenderersByColumnClass.put(JComboBox.class, new MyComboBoxRenderer());
defaultEditorsByColumnClass.put(Object.class, new MyCellEditorModel1(cellEditors));
public TableCellEditor getCellEditor(int row, int col){
if(myCellEditorModel!=null) return myCellEditorModel;
return super.getCellEditor(row,col);
public TableCellRenderer getCellRenderer(int row, int column) {
Object value = getValueAt(row,column);
if (value !=null) {
return getDefaultRenderer(value.getClass());
return super.getCellRenderer(row,column);
public void setCellEditor(MyCellEditorModel anEditor) {
myCellEditorModel = anEditor;
}Hoping the code is enough to understand the problem, I thanks all for watching and reading the post and for the future answeres.
Bye all.

super.editorComponent=new JComboBox(elementi);You create a new combo box each call to getTableCellEditComponent() (overriding the one of the constructor), but you aren't adding a ItemListener to it.

Implementation of Autocomplete JComboBox in an applet

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