Cell Editor Problem in JTable

I have a problem using JTable. I have a requirement like each specified cell will have different editors like JtextField or Jcombobox as per some condition. I am building the rows at run time. Number of rows may vary as per condition.
can anyone guide me what to do?
thanks

Override the getCellEditor(...) method to return the appropriate editor.

Similar Messages

Help!!! JTable cell editor problem...

I am having a problem with table cell editors.
The problem is that when I click on another component
in the frame (out side of the JTable) the cell editors's
stopCellEditing() is not called so I get a JTable with a cell
editor in editing mode.
Any help?
Thanks a lot

It is difficult to tell what happens with FocusEvents when you are actually editing a cell and the editor is "up". I am experiencing different difficulties with the same root issue. I think the problem here is that the Java Focus Manager is consuming the focus event without propagating the event to any of the JTable components (CellEditor or JTable). I am not sure if this is exactly the case but I haven't been able to trap focus events in the Editors, Renderers or JTable anywhere. If the editor is not "up" then event handling seems to be fairly normal but when you are actually editing a cell it becomes tricky.
However, this is a problem I fixed by placing a FocusGained event handler on the other (non JTable) component and then manually stopping editing on the JTable. In other words in the JFrame (or whatever component you are using) I added a FocusListener to the non JTable component and inside of FocusGanied() I execute:
public void focusGained(FocusEvent e){
table.getCellEditor().stopEditing();
table.removeEditor();
You could, of course, use cancelEditing() as well. You'll probably want to wrap the code with some robustness as follows to ensure that you don't get trapped by wierdness.
public void focusGained(FocusEvent e){
if (table.isEditing() && table.getCellEditor() != null){
table.getCellEditor().stopEditing();
table.removeEditor();
This is probably not the only way to solve the problem but it was the way that worked when I encountered that issue.

Custom JTable cell editor problem

I have a custom JTable cell editor which is a JPanel with 2 JtextFields, One for a name, the other for a data value. My problem lies in when the the cell is selected and then the user start typing. The JTextfield outline shows up, but there is no carat. I can only edit the cell when I click the mouse in it again. I have my isCellEditable method set to only allow editing on 2 mouse clicks, but I did try it with just returning true and had the same problem. Please help.
Code:
class cellValue {
String name;
String data;
Color nameColor;
Color dataColor;
Font font;
public cellValue(String n, String d, Color nC, Color dC, Font ff){
name = n;
data = d;
nameColor = nC;
dataColor = dC;
font = ff;
} //end class
public class TextFieldCellEditor extends JPanel implements TableCellRenderer, TableCellEditor{
private EventListenerList listenerList = new EventListenerList();
private ChangeEvent event = new ChangeEvent(this);
private cellValue s;
private int e_row=0;
private int e_col=0;
private JTextField ta;
private JTextField tb;
public TextFieldCellEditor() {
setLayout(new GridBagLayout());
ta = new JTextField();
tb = new JTextField();
tb.setHorizontalAlignment(SwingConstants.RIGHT);
add(ta, new GridBagConstraints(0,0,1,1,0.6,0.0,java.awt.GridBagConstraints.WEST,java.awt.GridBagConstraints.BOTH,new Insets(0,1,0,0),0,0));
add(new JLabel(" "),new GridBagConstraints(1,0,1,1,0.1,0.0,java.awt.GridBagConstraints.WEST,java.awt.GridBagConstraints.BOTH,new Insets(0,1,0,0),0,0));
add(tb, new GridBagConstraints(2,0,1,1,0.3,0.0,java.awt.GridBagConstraints.EAST,java.awt.GridBagConstraints.BOTH,new Insets(0,1,0,0),0,0));
} //end init
public Component getTableCellRendererComponent(JTable table, Object value,boolean isSelected,
boolean hasFocus,int row, int column) {
s = (cellValue)value;
e_row = row;
e_col = column;
ta.setText(s.name);
tb.setText(s.data);
ta.setFont(s.font);
tb.setFont(s.font);
ta.setForeground(s.nameColor);
tb.setForeground(s.dataColor);
setForeground(table.getForeground());
setBackground(table.getBackground());
ta.setBackground(table.getBackground());
tb.setBackground(table.getBackground());
ta.setCaretColor(Color.WHITE);
tb.setCaretColor(Color.WHITE);
return (JComponent)(this);
public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
return (getTableCellRendererComponent(table, value,isSelected, true, row, column));
public boolean isCellEditable(EventObject e) {
if (e instanceof MouseEvent) {
return ((MouseEvent)e).getClickCount() >= 2;
} return true;
// return true;
public boolean shouldSelectCell(EventObject anEvent) {
return (true);
public void cancelCellEditing() {
public boolean stopCellEditing() {
fireEditingStopped();
return (true);
public Object getCellEditorValue() {
return (ta.getText());
public void addCellEditorListener(CellEditorListener l){
try {
SwingUtilities.invokeLater(
new Runnable() {
public void run() {requestFocus();}
} catch (Exception e) {};
listenerList.add(CellEditorListener.class, l);
public void removeCellEditorListener(CellEditorListener l) {
listenerList.remove(CellEditorListener.class, l);
protected void fireEditingStopped(){
Object[] listeners = listenerList.getListenerList();
for (int i = listeners.length - 2; i >= 0; i -= 2)
((CellEditorListener)listeners[i+1]).editingStopped(event);
protected void fireEditingCanceled() {
Object[] listeners = listenerList.getListenerList();
for (int i = listeners.length - 2; i >= 0; i -= 2)
((CellEditorListener)listeners[i+1]).editingCanceled(event);
} //end class

Thanks again for the repley.
I tried removing the celleditorlistener and using the setSurrenderFocusOnKeystroke, but it did not work. The textfield is editable;
I did change:
public void addCellEditorListener(CellEditorListener l){
try {
SwingUtilities.invokeLater(
new Runnable() {
public void run() {ta.requestFocus();}
} catch (Exception e) {};
listenerList.add(CellEditorListener.class, l);
}This allows the first textfield to request focus and this seems to work. But when I highlight a cell, then start typing, the first character I type puts me into the editor, but it is lost. Example:
I type hello
and get ello in the cell. Then when I press enter the input is excepted and the selection goes to the next cell, but I cannot move the Highlight cursor at all, seems locked. The only way I can continue to the next cell is to use the mouse.
You said you had a cell editor working. Would you care to share as an example. This is killing me to get this to work properly.
Thanks again
Dave

JTable Cell Editor Problems

Hi All,
I have a problem concerning the editing for my table. When I click on a column a dialog box opens up and the user picks the values he wants. But after he presses ok in the dialog box the user again has to press enter in the selected cell or click on another cell in the table for the selected cell to lose focus.I am using a textfield as the returning component in the getcomponent method for the the table cell editor. Is there a way I can force the textfield to register an enter automatically so it loses focus or is there another way?
Thanks, in advance.

this is how my code is structured:
public class MyTableCellEditor extends AbstractCellEditor implements TableCellEditor,
     ActionListener{
     private static final long serialVersionUID = 0;
     private int clickCountToStart = 2; // Default value is double click
     private JFrame editingFrame;
     // This is the component that will handle the editing of the cell value
     JTextField txtresult = new JTextField(10);
     String result = null;
     public MyTableCellEditor(JFrame jframe){
          //txtresult.addActionListener(this);
          editingFrame = jframe;
    public int getClickCountToStart(){
        return clickCountToStart;
    public int setClickCountToStart(int c){
        clickCountToStart = c;
         return clickCountToStart;
    public boolean isCellEditable(EventObject e){
        if(e instanceof MouseEvent){
             if(((MouseEvent)e).getClickCount()>=this.getClickCountToStart()){
                  return true;
        return false;
    public boolean stopCellEditing(){
         fireEditingStopped();
         return true;
    // This method is called when a cell value is edited by the user.
    public Component getTableCellEditorComponent(JTable table, Object value,
            boolean isSelected, int row, int col) {
         // Make certain columns non editable
         if(table.getColumnName(col).equals("Sub Number")){
              return null;
         else if(table.getColumnName(col).equals("Transmitter#/Receiver#")){
              return null;
         if(table.getColumnName(col).equals("TOOLMODE")){
              result = toolModeModify();
             if(result==null){
                  result = value.toString();
              if(result != null){
                  txtresult.setText(result);
             else{
                  txtresult.setText(value.toString());
        else{
             result = ModifyCell();
             if(result != null){
                  txtresult.setText(result);
             else{
                  if(value != null){
                       txtresult.setText(value.toString());
         txtresult.setEditable(false);
         return txtresult;
    public void actionPerformed(ActionEvent e) {
        //stopCellEditing(); //Make the renderer reappear.
    // This method is called when editing is completed.
    // It must return the new value to be stored in the cell.
    public Object getCellEditorValue() {
         try{
             return txtresult.getText();
         }catch(NullPointerException ne){
              return null;
    private String toolModeModify(){
         Object[] possibilities = {"0", "1", "2","3"};
         String number = (String)JOptionPane.showInputDialog(
                             editingFrame,
                             "Option 0: Receiver\n"
                             + "Option 1: UDT\n"
                             + "Option 2: TRX/UDR\n" +
                             "Option 3: OFF\n",
                             "Select Mode",
                             JOptionPane.PLAIN_MESSAGE,
                             null,
                             possibilities,
                             "0");
         return number;
    private String ModifyCell(){
          String editCell = "Edit Cell Value";
          String s;
          s = JOptionPane.showInputDialog(editingFrame, editCell, null,
                    JOptionPane.PLAIN_MESSAGE);
          if(s != null){
               return s;
          else{
               return null;
}I dont know what I am doing wrong.

JTable cell editor problem

Hi, I have a custom cell editor component being used on my JTable (a calendar component) and am having problems bringing the component out of edit mode when selecting another cell.
If I click on a cell it enters edit mode correctly, the I can drop a popup window out from this editor to display the calendar. If however I move to another cell this window remains active.
Could anyone explain how to come out of edit mode when moving to another cell (not necessarily selecting just moving the mouse in to another) ?
I also have a second problem in that the calendar editor doesn't set the value in to the cell when choosing a date from the component. It keeps the original value that was in the cell. I have implemented a setValueAt() method so I'm not sure why this is not fired, any ideas?? Code is below :
public class DueDateTableModel extends AbstractTableModel {
    private Vector vAllDueDates = null;
    private Connection conn = null;
    private Statement stmt = null;
    private ResultSet rsDueDates = null;
    private int iColCount;
    private String sSqlDueDates = null;
    private String[] testColNames = null;
    public DueDateTableModel(int pColCount, Vector pAllDueDates, String[] pColNames){
        iColCount = pColCount;
        vAllDueDates = pAllDueDates;
        testColNames = pColNames;
        populateTableCells();
        //setupEditors();
    public int getColumnCount() {
        return iColCount;
    public int getRowCount() {
        return vAllDueDates.size();
    public String getColumnName(int iCol) {
          return testColNames[iCol];
    public Object getValueAt(int iRow, int iCol) {
        // TODO Auto-generated method stub
        Vector v = (Vector)vAllDueDates.elementAt(iRow);
        return v.elementAt(iCol);
    public void setValueAt(Object oValue, int iRow, int iCol) {
        Vector v = (Vector)vAllDueDates.elementAt(iRow);
        v.setElementAt(oValue,iCol);
        fireTableCellUpdated(iRow,iCol);
    public boolean isCellEditable(int iRow, int iCol) {
        if(getValueAt(iRow,iCol)==null){
            return false;
        }else{
            return true;
    private class DueDateEditor extends CalendarComboBox implements TableCellEditor{
        //protected EventListenerList listenerList = new EventListenerList();
        //protected ChangeEvent changeEvent = new ChangeEvent(this);
        public DueDateEditor(){
            super();
        public void removeCellEditorListener(CellEditorListener l){
            //listenerList.remove(CellEditorListener.class, l);
        public Component getTableCellEditorComponent(JTable table, Object value
                , boolean isSelected, int row, int column){
            //Just return the input panel and not the panel that the calendar comboBox is on
            return this.inputPanel;
          public Object getCellEditorValue(){
              return this.getDate();
          public boolean isCellEditable(EventObject evt) {
            //if (evt instanceof MouseEvent) {
              // return ((MouseEvent)evt).getClickCount() >= 2;
            return true;
          public boolean shouldSelectCell(EventObject anEvent){
              return false;
          public boolean stopCellEditing(){
              //this.setDate();
              return true;
          public void cancelCellEditing(){
          public void addCellEditorListener(CellEditorListener l){
              //listenerList.add(CellEditorListener.class, l);
          /*protected void fireEditingStopped() {
              CellEditorListener listener;
              Object[] listeners = listenerList.getListenerList();
               for (int i = 0; i < listeners.length; i++) {
                     if (listeners[i] == CellEditorListener.class) {
                            listener = (CellEditorListener) listeners[i + 1];
                            listener.editingStopped(changeEvent);
    }Sorry the classes are quite basic, I'm not very familiar with custom cell editors, I have normally used default ones like combobox etc.
Regards
Alan

To get better help sooner, post a SSCCE that clearly demonstrates your problem.
To post code, use the code tags -- [code]Your Code[/code]will display asYour CodeOr use the code button above the editing area and paste your code between the {code}{code} tags it generates.
luck, db

Cell Editor for a JTable within A JTable Cell

My individual cells each contain a seperate JTable and I need to write a cell editor for it. I'm not really sure how to write one so if someone show me where I can find some useful examples of such a cell editor I would greatly appreciate it. Thank you for your time. :-)

So, you have a big table whose cells each contain a little table. I assume you already have the little tables working correctly with cell editors and so on, and you want to write a cell editor for the big table. Correct?
My problem with this is that I can't imagine how this would actually work in practice. Suppose I click on a cell in the big table; then the cell renderer displays the appropriate little table. At this point should I see one of the cells in that little table selected, and should I be able to use the Tab key to move around the little table? And if so, then I can't use the Tab key to move around the big table. Next, suppose I press F2 indicating that I want to edit the little table. What should change? Should I now be able to tab around the little table, whereas I couldn't before? And if so, how do I indicate that I have stopped editing the little table? Pressing Enter indicates to the little table's cell editor that its editing is finished, but how should I tell the big table's cell editor that its editing is finished?
Perhaps if you can answer this, you may have a better idea of how to solve your problem. Sorry I only have questions and not answers.

Focus cell editor component of JTable when starting editing by typing

Hello, everybody.
We all know that the JTable component doesn't actually focus the actual cell editor component when editing is started by typing. But I need this functionality in an application of mine. So, I ask: is there a way to transfer focus to the editor component when editing is started by typing?
Thank you.
Marcos

Well, I think that I've found it: JTable#setSurrendersFocusOnKeystroke.
Marcos

Problem using an editable JComboBox as JTable cell editor

Hi,
i have a problem using an editable JComboBox as cell editor in a JTable.
When i edit the combo and then I press the TAB or ENTER key then all works fine and the value in the TableModel is updated with the edited one, but if i leave the cell with the mouse then the value is not passed to the TableModel. Why ? Is there a way to solve this problem ?
Regards
sergio sette

if (v1.4) [url
http://java.sun.com/j2se/1.4.2/docs/api/javax/swing/JTa
le.html#setSurrendersFocusOnKeystroke(boolean)]go
hereelse [url
http://forum.java.sun.com/thread.jsp?forum=57&thread=43
440]go here
Thank you. I've also found this one (the first reply): http://forum.java.sun.com/thread.jsp?forum=57&thread=124361 Works fine for me.
Regards
sergio sette

Using a JPanel as cell editor in JTable

I have a composite component (JPanel that contains a JTextField and a
JButton) that I would like to use as the a cell editor in a JTable.The JButton instantiates a UI editor component that I have designed. Example would be date editor for dates, tet editor for strings etc. This editor allows the user to select a date to populate the JTextField (the date may also be manually entered).
I have no problem with the rendering of the component within the table.However, I would like for the JTextField embedded within the JPanel to receive focus and a visible caret, when using the tab key to navigate to the cell. After reading through some of the posts here , I was able to transfer the focus. But I dont see a visible caret. I am unable to edit. I have to click on the text box and then start typing. Its a great pain in the ass.
I have a custom designed table and custom designed editor. Code is attached...
<pre>
protected boolean processKeyBinding(KeyStroke ks, KeyEvent e,int condition, boolean pressed) {
final int selRow = getSelectedRow();
final int rowCount = getRowCount();
final int selCol = getSelectedColumn();
final EventObject obj = (EventObject) e;
if (selRow == -1) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
changeSelection(0, 1, false, false);
editCellAt(0, 1, obj);
boolean isSelected = false;
if ((ks == KeyStroke.getKeyStroke(KeyEvent.VK_TAB,0)) ||
(ks == KeyStroke.getKeyStroke(KeyEvent.VK_ENTER,0))) {
if (selCol == 1) {
isSelected= getCellEditor(selRow,selCol).stopCellEditing();
targetRow = (selRow + 1) % rowCount;
SwingUtilities.invokeLater(new Runnable() {
public void run() {
if (editCellAt(targetRow, 1, obj)) {
changeSelection(targetRow, 1, false, false);
getComponentAt(targetRow, 1).requestFocus();
} else {
getCellEditor(selRow, selCol).shouldSelectCell(obj);
return super.processKeyBinding(ks,e,condition,pressed);
</pre>
Relevant code of my custom editor is below....
public Component getTableCellEditorComponent(JTable table,
Object value, boolean isSelected, int row, int column) {
lastEditedRow = row;
lastEditedCol = column;
lastEditedTable = table;
lastEditedValue = value;
val = value;
((JTextField)editorComponent).
setText(val == null ? "" : val.toString());
setClickCountToStart(1);
if (value instanceof CycCollectionChooserModel) {
String collection = ((CycCollectionChooserModel)value).
getCollection().cyclify();
button.setVisible(EditorForCollectionMap.hasUIEditor(collection));
button.setMargin (new Insets (1,1,1,1));
button.setIconTextGap(0);
buttonListener.model = (CycCollectionChooserModel)value;
buttonListener.rowIndex = row;
buttonListener.localTable = table;
return panel;
public boolean isCellEditable(EventObject evt) {
if (evt instanceof MouseEvent) {
int clickCount;
clickCount = 1;
return ((MouseEvent)evt).getClickCount() >= clickCount;
return super.isCellEditable(evt);
public boolean stopCellEditing() {
if (super.stopCellEditing()) {
final int targetRow = (lastEditedRow+1)%lastEditedTable.getRowCount();
SwingUtilities.invokeLater(new Runnable() {
public void run() {
lastEditedTable.changeSelection(targetRow, 1, false, false);
lastEditedTable.getComponentAt(targetRow, 1).requestFocus();
return true;
return false;
Does any one know why I am not able to see the caret? Any insights you have will be most welcome.
Thanks in advance,
Praveen.

Almost solved the problem. Navigation through Tab key, up/ down arrow, Enter key works for text boxes. Navigation through Tab Key, Up/down arrow works for combo boxes. But for "Enter" key it doesnt. Changes in code ....
(I have added a key listener to my editor class)
<pre>
protected boolean processKeyBinding(KeyStroke ks, KeyEvent e,int condition, boolean pressed) {
final int selRow = getSelectedRow();
final int rowCount = getRowCount();
final int selCol = getSelectedColumn();
final EventObject obj = (EventObject) e;
if (selRow == -1) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
changeSelection(0, 1, false, false);
editCellAt(0, 1, obj);
boolean isSelected = false;
if ((ks == KeyStroke.getKeyStroke(KeyEvent.VK_TAB,0)) ||
(ks == KeyStroke.getKeyStroke(KeyEvent.VK_ENTER,0)) ||
(ks == KeyStroke.getKeyStroke(KeyEvent.VK_DOWN,0))) {
if (selCol == 1) {
final int targetRow = (selRow + 1) % rowCount;
getCellEditor(selRow,selCol).stopCellEditing();
SwingUtilities.invokeLater(new Runnable() {
public void run() {
editCellAt(targetRow, 1, obj);
changeSelection(targetRow, 1, false, false);
getComponentAt(targetRow, 1).requestFocus();
if ((ks == KeyStroke.getKeyStroke(KeyEvent.VK_UP,0))||
(ks == KeyStroke.getKeyStroke(KeyEvent.VK_TAB,1))) {
if (selCol == 1) {
final int targetRow = (selRow - 1) % rowCount;
getCellEditor(selRow,selCol).stopCellEditing();
SwingUtilities.invokeLater(new Runnable() {
public void run() {
editCellAt(targetRow, 1, obj);
changeSelection(targetRow, 1, false, false);
getComponentAt(targetRow, 1).requestFocus();
return super.processKeyBinding(ks,e,condition,pressed);
public class FactEditorComboBoxTableEditor extends DefaultCellEditor implements KeyListener{
//// Constructors
/** Creates a new instance of FactEditorComboBoxTableEditor. */
public FactEditorComboBoxTableEditor(JComboBox comboBox) {
super(comboBox);
JTextField TF =(JTextField)((ComboBoxEditor)comboBox.getEditor()).
getEditorComponent();
TF.addKeyListener(this);
public class FactEditorComboBoxTableEditor extends DefaultCellEditor implements KeyListener{
//// Constructors
/** Creates a new instance of FactEditorComboBoxTableEditor. */
public FactEditorComboBoxTableEditor(JComboBox comboBox) {
super(comboBox);
JTextField TF =(JTextField)((ComboBoxEditor)comboBox.getEditor()).
getEditorComponent();
TF.addKeyListener(this);
</pre>
P.S : viravan, help me solve this problem and you will get the rest of the dukes LOL

JTable & custom cell editor

Hello everyone,
what is the correct way of writing a custom cell editor for a JTable? I followed the example in the Java tutorial ([How to use tables|http://java.sun.com/docs/books/tutorial/uiswing/components/table.html#editor]), but the result is a bit weird. The code I have is the following:
    private class NumericCellEditor extends AbstractCellEditor implements TableCellEditor {
        NumericFTField field = new NumericFTField(threeDecimalsFormat, 3, null, 1);
        public Component getTableCellEditorComponent(JTable table, Object value,
                boolean isSelected, int row, int col) {
            field.setValue(value);
            return field;
        public Object getCellEditorValue() {
            return field.getValue();
        @Override
        public boolean stopCellEditing() {
            if (((NumericFTField)field).verifyDouble()) {
                field.setBorder(new EmptyBorder(0, 0, 0, 0));
                fireEditingStopped();
                return true;
            } else {
                field.setBorder(BorderFactory.createLineBorder(Color.red));
                return false;
    }where the NumericFTField is a class derived from JFormattedTextField that only allows digits, decimal separator, minus and 'E' to be inserted, and it monitors clipboard operations. verifyDouble() is a method of the NumericFTField class that verifies whether the current input can be parsed to a double and whether it satisfies everything it should. This is then used in
((TableColumn)jTblSpecs.getColumnModel().getColumn(1)).setCellEditor(new NumericCellEditor());The NumericFTField class works great, I use it also in place of a JTextFields, so I'd say there is nothing wrong with it.
After I click in a cell (single click), it behaves a little different that the default cell editor: the cell is not highlighted, but it immediately jumps to the editing state (why???). I, indeed, can insert the allowed characters only. When I click in a cell, do some editing and press Enter, the cell's content gets validated. If it is invalid, stopCellEditing() method does its magic; if it is valid, the caret disappears and everything SEEMS okay. However, if I started typing at this point, the cell reverts to the editing state, but now I am able to enter any character I want. It truly looks like the cell editor is now some other component, not the original NumericFTField one. What is going on here?
It would be great is someone could provide a short schematic source of a custom cell editor class that would work exactly as the JTable's default one except it would only permit digits and so on. It doesn't have to be anything fancy, just a "skeleton" of the class with comments like "input verification here" etc.
I am sorry for any lack of clarity, but I am still a Java newbie.
Any help would be much appreciated.
Best regards,
vt

Hi,
I am also facing the same problem. In addition to what you have specified, my requirement is to be able to select multiple rows for deletion. But, the very first row selected using mouse is not visible as selected though its selected. The other rows are visible as selected.
If you can use any JDK version, start using JDK1.6. You will not be facing this problem. There were so many changes done for swings from JDK 1.4 to 1.6. But, I have to strictly use JDK1.4, but could not find any workaround for this problem.
It would be great if anyone can help me out in this issue to get workaround for this problem.

Setting cell editor for individual cell in JTable

Hi there,
I want to provide individual cell editor for my JTable. Basically, my JTable shows property names and values. I want to show different cell editors for different properties.
I followed the advice in this post:
http://forum.java.sun.com/thread.jsp?forum=57&thread=423318
but I have a question:
I looked at the code of DefaultCellEditor. It just has a single editor component (the one provided in the constructor), so all the methods use the same component and certain aspects are customized for the type of component. Again, there can be only one type of component at a time.The problem that I am facing is that I will have different components for different row/column of the same table. So how do I implement some of the methods (for example, getCellEditorValue()), when I have multiple editor components?
Also, how do I commit changes made by the user?
I am extremely confused.
Someone please help!
Thanks.

Actually, that's what I am currently doing.
Here is my cell editor class:
public class ObjectPropertyEditor extends DefaultCellEditor
       public ObjectPropertyEditor()
          super(new JTextField());
          Vector list = new Vector();
          list.add("Yes");
          list.add("No");
         myCombo = new JComboBox(list);
      public Component getTableCellEditorComponent(JTable table, Object value,
          boolean isSelected, int row, int column)
         String colName = (String)table.getValueAt(row,0);
         if(colName.equalsIgnoreCase("Leaf-Node?")) //if it is the "Leaf" property, return the combo box as the editor
             return myCombo;
        else //for all other properties, use JTextField of the super class
            return super.getTableCellEditorComponent(table,value,isSelected,row,column);
    private JComboBox myCombo;
}The problem I have is that when I select a new item from the combo box, the new selection is not reflected in the tableModel. I don't know how I can achive that. I think I need the functionalities that DefaultCellEditor gives to its delegate when its constructor arguments is a combo box. But how can I get two different sets of functionalities (JTextField and JComboBox) ?
Please help!
Thanks.

JTable cell editor ..not able to delete value in the cell

Hello,
I have applied Cell Editor on the JTAble. I'm able to enter value initially in the cell.
Once I tab out of that cell, go back to the same cell, edit the value again and tab out. It still shows me old value, not the updated one.
I'm using putClientProperty("terminateEditOnFocusLost", Boolean.TRUE) to recognise the cell value without focus lost.
Does this cause any problem ???
Thanks in advance
Kapil

then what might be the problem of value not getting deleted ??
Code is:
public class MyTableCellEditor extends AbstractCellEditor
implements TableCellEditor {
//This is the component that will handle the editing of the cell value
private JTextField component = null;
//This method is called when a cell value is edited by the user.
public Component getTableCellEditorComponent(JTable table, Object value,
boolean isSelected, int rowIndex, int vColIndex) {
component = new JTextField();
System.out.println("value*************** "+value);
System.out.println("Component value*************** "+component.getText());
if(value != null){
component.setText(value.toString());
else{
component.setText("");
// Return the configured component
return component;
// This method is called when editing is completed.
// It must return the new value to be stored in the cell.
public Object getCellEditorValue() {
return component.getText();
public boolean shouldSelectCell(EventObject anEvent) {
return false;
}

Tab between cells and celleditor in JTable

I placed a cell editor in a JTable column JTextField.
After I type something in this editor and press tab it stays in the same cell and when I press tab again then it goes to the next column.
How can I correct this so that After I type something in the cell and press tab I want it to go to the next column directly in JTable.
Thanks.

I'd have to see your code to tell you what's wrong. I tried it this way and had no problem.
TableColumn tc = table.getColumnModel().getColumn(2);
tc.setCellEditor(new DefaultCellEditor(new JTextField()));by the way, I don't think you need to explicitly set the cell editor component to JTextField. It uses that by default.

Implementing a focuslistener to a cell editor

hi,
can somebody help on how to do this??
al i need is to track when the status of the cell editor on a jtable.
any suggestions??
thank you

I know about the Stack object in java, I'm just trying to avoid having to pop everything from the stack, remove last element then push everything back in once the stack reaches full capacity. I'm no expert but that seems kind of inefficient, even though I only have 100 elements.
And as far as showing code, I don't really have any code yet I'm just trying to come with a good algorithm.
One idea I have is to use a Hashtable instead of a Stack and as keys use an integer value. So as an element is stored it's done something like:
Hashtable<Integer, Object> table=new Hashtable<Integer, Object>();
int cnt=0;
table.add(new Integer(cnt++), newObject);Everytime you add an element you check the value of cnt. Once it reaches 100 to add a new element to the table you just add it as you normally would, but you also remove the cnt-100th element so
table.add(new Integer(cnt++), newObject);
table.remove(new Integer(cnt-100));The only problem with this is that cnt will constantly be growing and if the program runs for a long time or if the add operations occur frequently then you run the risk of running out of values (if you reach Integer.MAX_VALUE)
What do you guys think, is there a way to improve this algorithm or a better different way?

Problem in JTable with a JComboBox cell editor

Hi gurus,
Please help! I am having a problem with a JTable that has a JComboBox cell editor. When the table is first loaded, the combo box column displays correct data. But whenever I click the combo box, the selection will be set to the first item in the combo box list once the popup menu pops up even before I make any new selection. It is very annoying.
Here is how I set the cell editor:
populateComboBoxModel(); // populate the combo box model.
DefaultCellEditor cell_editor = new DefaultCellEditor(new JComboBox(
combo_model));
contrib_table.getColumnModel().getColumn(1).setCellEditor(
cell_editor);
I didn't set the cell renderer so I assume it is using the default cell renderer.
Thanks !

Not quite. The example doesn't have a different cell editor for each row of the table. I'm sure I must be missing something, bc I've found many references to the fact that this is possible to do. And I have most of it working. However, when I click on any given combobox, it automatically switches to the first value in the list, not the selected item. I've tried setting the selected item all over the code, but it has no effect on this behavior. Also, it only happens the first time I select a given cell. For example, suppose the first row has items A, B, and C, with B being the selected value. The table initially displays with B in this cell, but when I click on B, it switches to A when it brings up the list. If I select B, and move on to some other cell, and then go back and click on B again, it doesn't switch to A.
There seems to be a disconnect between the values that I display initially, and the values that I set as selected in the comboboxes. Either that, or it behaves as though I never set the selected item for the combobox at all.
Any help would be greatly appreciated.

Cell Editor Problem in JTable

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