JTable in a JComboBox
hello all
does anybody has a good idea or solution to display a JTable in a JComboBoxPopup (instead of a list) and after selecting a row, it fills in a defined column of this row in the editor field of the combo box?
thanx a lot
greetings from switzerland
elkon
I am not sure about "after selecting a row, it fills in a defined column of this row in the editor field of the combo box"
However you can use a custom Renderer to return the component that you want to display in the JComboBox. The Java Tutorial has an example that uses a custom renderer to return a JLabel. You could use it to return a JTable.
http://web2.java.sun.com/docs/books/tutorial/uiswing/components/widgets.html
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Appearing the added JTable's cell JComboBox at running the Class
During the time of employing the JTable,arising the problem of how to appear the added JTable's cell JComboBox at loading the class..Can you aid me plz to resolve this bug...If u know answer,plz forward the resolution..
Sorry, I don't understand the question so I'll just point you to the Swing tutorial on "How to Use Tables" which has a working example of using a combo box in a table:
http://java.sun.com/docs/books/tutorial/uiswing/components/table.html -
Filtering the rows of a JTable based on JCombobox selection
Hi,,,
I write an application where I have a combobox contains the JTable first column data when i click on the item it should give me the rows, which contains the selected item as their first column data. I am enable to get the list like that, please, help me in this.........................................
Thanks In Advance,
Sun_sgrkHi Albert,
I write the code like this.............., please, check it, if I am following any where wrong let me know.......
JComboBox filterCb=(JComboBox)evt.getSource();
if(filterCb==filterComboBox){
for(int i=0;i<wtOb.length;i++){
for(int j=0;j<4;j++){
if(wtOb[0].toString()==filterComboBox.getSelectedItem())
System.out.println(""+wtOb[i][j]);
This code I written in netbeans, when I am printing the values of wtOb[i][j] in console its getting the rows, suppose I am selecting the topic as GeneralTopic then its givining me the output as-----
GeneralTopic
Dealer5
Player3
BlackJack2
GeneralTopic
Dealer7
Player6
BlackJack
but I am getting the trouble when i want to show these rows only in my table, please, give me any suggestion or any help to resolve it. I tried with table.setModel also but its not working.
Regards,
sun_sgrk -
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. -
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. -
JTable with editable JComboBoxes
For some reason once I added editable JComboBoxes to a JTable I can no longer tab among the fields in the table. If I just select a cell, I can tab to the other cells in that row, and then to proceeding rows as I reach the end of each. However if I double click the cell and enter data or select from the combobox. I no longer can tab to the next cell. At that point once I do hit tab, I am taken to the next table. Not the next cell in the row, or the next row in the current table.
I have tried messing with a bunch of listeners, but I am not using the right listener on the right object? What listerner and object should the listener belong to? Table, model, cell editor, combobox, jpanel, jframe ? I hope this is not to vague.Well I am starting to think it's an implementation issue. Like I am not doing it how I should. I am basically doing
JComboBox jcb = new JComboBox();
jcb.setEditable(true);
column.setCellEditor(new DefaultCellEditor(jcb));
When I think I should be inheriting, and creating my own editor and/or renderer? Now my combobox vars are globally available in the class, so I can set and clear their contents. It does not matter that each row in the table has the same content in the combo boxes, that's basically what I want. User to be able to select an existing entry or make a new one.
What I am trying to do is on tables have a drop down box that shows up when a user types a matching entry. If no entry matches, no popup box. If entry matches, box pops up and shows possible entries starting with what they are typing. Like code completion in IDE's like Netbeans. However I am doing this in a table. I thought a JComboBox would be a good widget to start with? -
JTable JComboBox display Problems
I have a JTable which uses JCombobox's to display one column's infomation.
Most times this works perfectly well and displayes correctly.
But sometimes the combo box will not be displayed at all in the table (just get a white cell). When clicked apon the combo box works correctly and the information is in the cell, as it is used latter on in the program . Once a value is selected in the combo box the cell goes back to being white.
The only corrilation I can find is that this seems to occure more frequently when I am debugging or running alot of programss in the back ground.
Any suggestiongs on where I can start looking.
ThanksSounds like the Cell Renderer is not working as expected.
- that might be a starting point for you, hard to say much more without
any code... -
Displaying a JComboBox in JTable
I have a JComboBox in a JTable. The JComboBox contains JCheckBox's.
To enable the user to select multiple checkbox items in the combobox, my class which extends JComboBox also implements ComboBoxEditor. In getItem I use showPopup inside a thread to enable multiple selections.
public Object getItem()
SwingUtilities.invokeLater(new Runnable()
public void run()
showPopup();
return getSelectedItem();
The code that I have written works when the combobox is dsplayed in a panel. However, when it is placed in a JTable it fails with a:
Exception occurred during event dispatching:
java.awt.IllegalComponentStateException: component must be showing on the screen to determine its location
at java.awt.Component.getLocationOnScreen_NoTreeLock(Component.java:1507)
at java.awt.Component.getLocationOnScreen(Component.java:1481)
at javax.swing.JPopupMenu.show(JPopupMenu.java:921)
at javax.swing.plaf.basic.BasicComboPopup.show(BasicComboPopup.java:177)
at javax.swing.plaf.basic.BasicComboBoxUI.setPopupVisible(BasicComboBoxUI.java:927)
at javax.swing.JComboBox.setPopupVisible(JComboBox.java:790)
at javax.swing.JComboBox.showPopup(JComboBox.java:775)
at com.clarologic.pm.backoffice.usermanagement.accounts.usertabs.branchdetails.rolecombobox.RoleComboBox$1.run(RoleComboBox.java:155)
The last line corresponds to the showPopup(); in the getItem() function.
Anyone seen this and resolved it before ??
ChrisICE,
public Object getItem()
SwingUtilities.invokeLater(new Runnable()
public void run()
if (isShowing())
showPopup();
return getSelectedItem();
This certainly stops the exception, however, it also wrecks the desired functionality.
I wonder if the table renderer is getting in the way, which is causing the problem to occur.
Chris -
JTable JComboBox setEditable(true) does what?
The JTable column uses JComboBox. What is expected of combo.setEditable(true)? Here is the relevant code.
Thanks
for (int k = 0; k < m_data.getColumnCount (); k++)
TableCellRenderer renderer = null;
TableCellEditor editor = null;
if (k==0) /* sysname column */
renderer=new DefaultTableCellRenderer();
JComboBox combo= new JComboBox(sys_names);
combo.setRequestFocusEnabled(false);
combo.setBackground(Color.yellow);
combo.setEditable(true);
combo.getEditor().getEditorComponent().setBackground(Color.blue)
editor=new DefaultCellEditor(combo);
[\code]That fits my limited experience. I'm currently only providing non-editable combos as the focus handling and traversal gets messy with editable ones. This may be due tosome other code I've put in to alter the default JTable behaviour, but I havn't had time to look into it yet.
-
Setting color of an item in a Jcombobox in a JTable when editing
Hello,
I have a situation where I have a JCombobox in a JTable . The JCombobox is non-editable. The items within the combobox are colored in pink or blue in order to help the user differentiate between the two categories that are in the list.
But the problem is that when the user is on that cell and is just typing the first letter(s) in the combobox, he does see the item starting with that letter(s) but that item is not shown as colored. However, if the user clicks on the combobox with a mouse, the list pops-up and the items are shown as colored. I want the first part to work where the user can just use keyboard and see the items as colored in that cell itself. By default, currently when the row is selected the foreground is white and background is black. I want that particularly when this combobox has focus and an item is selected, the foreground should be of the same color as the color of the item.
Can someone help?
Thanks a lot in advance.Additional information on above:
I associate a customized renderer with the column of my table for which i want to set the colors.
TableColumn tc6 = jTableDRS.getColumnModel().getColumn(myDRSModel.FINANCECODE_COLUMN);
tc6.setCellRenderer(new ColorRenderer());
here is the renderer that I am using...
public class ColorRenderer extends JLabel implements TableCellRenderer {
protected Border noFocusBorder;
public ColorRenderer() {
noFocusBorder = new EmptyBorder(1, 2, 1, 2);
setOpaque(true);
setBorder(noFocusBorder);
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
Color foreground = null;
Color background = null;
Font font = null;
if(column == myDRSModel.FINANCECODE_COLUMN)
setFont((font != null) ? font : table.getFont());
String str = (String)value.toString();
if (!str.equalsIgnoreCase("SELECT ONE")) {
int y = financedesc.indexOf(str);
if((payreceiveind.get(y).toString()).equals("R")){
setForeground(Color.RED);
} else if((payreceiveind.get(y).toString()).equals("P")){
setForeground(new Color(147,112,240));
if(isSelected)
if((payreceiveind.get(y).toString()).equals("R")){
setForeground(Color.RED);
} else if((payreceiveind.get(y).toString()).equals("P")){
setForeground(new Color(147,112,240));
setBackground(table.getSelectionBackground());
else{
setBackground(table.getBackground());
else
if(isSelected)
setForeground(table.getSelectionForeground());
setBackground(table.getSelectionBackground());
else
setForeground(table.getForeground());
setBackground(table.getBackground());
setValue(value);
return this;
protected void setValue(Object value) {
setText((value == null) ? "" : value.toString());
} -
Jtable sorting column having Jcombobox renderer
Hi
I am trying to sort Jtable column having Jcombobox renderer , please can you give me some idea to do it.
already tried with JDK1.6 table.setAutoCreateRowSorter(true);To get better help sooner, post a [_SSCCE_|http://mindprod.com/jgloss/sscce.html] that clearly demonstrates your problem.
Use code tags to post codes -- [code]CODE[/code] will display asCODEOr click the CODE button and paste your code between the {code} tags that appear.
db -
JComboBox: Can I have the arrow to show up in non-editing mode ?
Hi,
I have a JComboBox in a JTable. The JComboBox is not editable. If I'm selecting from the popup, the Popup shows a nice little arrow on the right. If I'm not selecting (e.g. I'm in another cell or another component has focus), the arrow doesn't show.
I don't care, but the users get picky sometimes. They want to see the arrow ALWAYS.
Thanks
HolgerThanks. that was easy. Sample code below.
May the duke be with you !
TablePanel.java
Simple implementation of TableModel for demo purposes. Shows static,
read-only information.
Example usage: java TablePanel
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;
public class TablePanel extends JPanel {
public TablePanel() {
super();
init();
private final void init() {
initLabel();
initTable();
initOkButton();
private final void initLabel() {
JLabel label = new JLabel();
label.setText("This is a test");
add(label);
private final void initOkButton() {
JButton okButton = new JButton();
okButton.setText("OK");
okButton.addActionListener(new ActionListener() {
public final void actionPerformed(ActionEvent e) {
System.out.println("ok button pressed");
System.exit(0);
add(okButton);
private final void initTable() {
JTable table = new JTable();
table.setModel(new SimpleTableModel());
table.getColumnModel().getColumn(0).
setCellRenderer(new ComboBoxRenderer(Color.red));
table.getColumnModel().getColumn(0).
setCellEditor(new ComboBoxEditor(Color.green));
add(table);
private final class ComboBoxEditor
extends JComboBox
implements TableCellEditor {
public ComboBoxEditor(Color background) {
this.setBackground(background);
public Component getTableCellEditorComponent(JTable table,
Object value,
boolean isSelected,
int row,
int column) {
return this;
public Object getCellEditorValue() {
return getSelectedItem();
public boolean isCellEditable(EventObject anEvent) {
return true;
public boolean shouldSelectCell(EventObject anEvent) {
return true;
public boolean stopCellEditing() {
return true;
public void cancelCellEditing() {
public void addCellEditorListener(CellEditorListener l) {
public void removeCellEditorListener(CellEditorListener l) {
private final class ComboBoxRenderer
extends JComboBox
implements TableCellRenderer {
public ComboBoxRenderer(Color background) {
this.setBackground(background);
public Component
getTableCellRendererComponent(JTable table,
Object value,
boolean isSelected,
boolean hasFocus,
int row,
int column) {
return this;
public final static void main(String[] args) {
System.out.println("TablePanel test started");
TablePanel panel = new TablePanel();
panel.setPreferredSize(new Dimension(400, 200));
JFrame frame = new JFrame("TablePanelTest");
frame.getContentPane().add(panel);
frame.pack();
frame.setVisible(true);
frame.addWindowListener(new WindowAdapter() {
public final void windowClosing(WindowEvent e) {
System.out.println("TablePanel2 test complete");
System.exit(0);
SimpleTableModel.java
Simple implementation of TableModel for demo purposes. Shows static,
read-only information.
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
public class SimpleTableModel
extends AbstractTableModel
implements TableModel {
public SimpleTableModel() {
super();
public final boolean isCellEditable(int row, int column) {
return true;
public final Object getValueAt(int row, int column) {
return "r" + row + " c" + column;
public final int getColumnCount() {
return 3;
public final int getRowCount() {
return 5; -
Okay so I have 5 combo boxes, and only 1 is enabled to start with. When you make a selection in that first combo box it populates a JTable with the appropriate data based on the selection. Than I want the user to select the row in the JTable and it will enable the other 4 JComboBoxes and load the data from the 4 columns of the JTable into the JComboBoxes. The only part I am having trouble with is selecting the JTable Row. I tried using a ActionEventListner and that clearly did not work =). Any help is appreciated.
Wow Camickr you must have gotten all 27,000 of your posts being an asshole. And this is the Java Programming Forum..... And I solved my problem thanks....
For anyone who wants to know what I did here it is.
This goes where you initialize your components.
jTable1.getSelectionModel().addListSelectionListener(listener);and heres the class fired by the listener.
public class SelectionListener implements ListSelectionListener {
JTable table;
SelectionListener(JTable table) {
this.table = jTable1;
public void valueChanged(ListSelectionEvent e) {
if (jTable1.getValueAt(jTable1.getSelectedRow(), 0) == ""){
jcomboTitle.setSelectedItem(0);
}else{
jcomboTitle.setSelectedItem(jTable1.getValueAt(jTable1.getSelectedRow(), 0));
if (jTable1.getValueAt(jTable1.getSelectedRow(), 0) == ""){
jcomboArtist.setSelectedItem(0);
}else{
jcomboArtist.setSelectedItem(jTable1.getValueAt(jTable1.getSelectedRow(), 1));
if (jTable1.getValueAt(jTable1.getSelectedRow(), 0) == ""){
jcomboAlbum.setSelectedItem(0);
}else{
jcomboAlbum.setSelectedItem(jTable1.getValueAt(jTable1.getSelectedRow(), 2));
if (jTable1.getValueAt(jTable1.getSelectedRow(), 0) == ""){
jcomboGenre.setSelectedItem(0);
}else{
jcomboGenre.setSelectedItem(jTable1.getValueAt(jTable1.getSelectedRow(), 3));
} -
JTable: renderer problem-urgent
Thanx "pasteven". That url is too good.
I wrote my own renderer for each cell in JTable that uses JCombobox for rendering purpose. But when i select an item in that combo box, some times renderer is not setting the selected item in that combobox. Sometimes when i change the selection of item in the previous cell,it is getting reflected in all other cells of that particular column.
Here is my code. Please help me.
import java.util.*;
import java.io.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.table.TableCellEditor.*;
import javax.swing.table.*;
import javax.swing.DefaultCellEditor;
public class Render extends javax.swing.JFrame {
JTextField textField0=new JTextField();
JComboBox cmb_Editor1=new JComboBox();
JComboBox cmb_Editor2=new JComboBox();
JComboBox cmb_Editor3=new JComboBox();
EachRowRenderer rend;
EachRowEditor eee;
/** Creates new form Render */
public Render() {
initComponents ();
rend=new EachRowRenderer();
eee=new EachRowEditor(table);
table.setDefaultRenderer(java.lang.Object.class,rend);
table.setDefaultEditor(java.lang.Object.class,eee);
cmb_Editor3.addItem("Y");
cmb_Editor3.addItem("N");
eee.setEditorAt(0,1,new DefaultCellEditor(cmb_Editor3));
eee.setEditorAt(1,1,new DefaultCellEditor(cmb_Editor3));
eee.setEditorAt(2,1,new DefaultCellEditor(cmb_Editor3));
eee.setEditorAt(0,2,new DefaultCellEditor(new JCheckBox()));
rend.add(0,2,new CheckBoxCellRenderer());
rend.add(0,1,new ComboBoxCellRenderer(cmb_Editor3));
rend.add(1,1,new ComboBoxCellRenderer(cmb_Editor3));
rend.add(2,1,new ComboBoxCellRenderer(cmb_Editor3));
JCheckBox chk=new JCheckBox();
pack ();
public class EachRowEditor implements TableCellEditor {
protected Hashtable editors;
protected TableCellEditor editor, defaultEditor;
JTable table;
public EachRowEditor(JTable table) {
this.table = table;
editors = new Hashtable();
defaultEditor = new DefaultCellEditor(new JTextField());
public void setEditorAt(int row,int column, TableCellEditor editor) {
editors.put(""+row+column,editor);
public Component getTableCellEditorComponent(JTable table,
Object value, boolean isSelected, int row, int column) {
return editor.getTableCellEditorComponent(table,
value, isSelected, row, column);
public Object getCellEditorValue() {
return editor.getCellEditorValue();
public boolean stopCellEditing() {
return editor.stopCellEditing();
public void cancelCellEditing() {
editor.cancelCellEditing();
public boolean isCellEditable(EventObject anEvent) {
selectEditor((MouseEvent)anEvent);
// editor.isCellEditable(anEvent);
return true;
public void addSeperateCellEditorListener(int row,int column,CellEditorListener l) {
editor=(TableCellEditor)editors.get(""+row+column);
editor.addCellEditorListener(l);
public void addCellEditorListener(CellEditorListener l) {
editor.addCellEditorListener(l);
public void removeCellEditorListener(CellEditorListener l) {
editor.removeCellEditorListener(l);
public boolean shouldSelectCell(EventObject anEvent) {
selectEditor((MouseEvent)anEvent);
return editor.shouldSelectCell(anEvent);
protected void selectEditor(MouseEvent e) {
int row;
int column;
if (e == null) {
row = table.getSelectionModel().getAnchorSelectionIndex();
column=table.getSelectionModel().getLeadSelectionIndex();
} else {
row = table.rowAtPoint(e.getPoint());
column=table.columnAtPoint(e.getPoint());
editor = (TableCellEditor)editors.get(""+row+column);
if (editor == null) {
editor = defaultEditor;
public class CheckBoxCellRenderer extends JCheckBox implements TableCellRenderer
CheckBoxCellRenderer() {
setHorizontalAlignment(JLabel.CENTER);
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus,
int row, int column) {
setSelected((value != null && ((Boolean)value).booleanValue()));
setToolTipText("checkbox");
return this;
public class TextFieldCellRenderer extends JTextField implements TableCellRenderer
JTextField textField;
TextFieldCellRenderer(JTextField textField) {
this.textField=textField;
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus,
int row, int column) {
setText((textField.getText() != null) ? textField.getText() : "");
return textField;
public class ComboBoxCellRenderer extends JComboBox implements TableCellRenderer
JComboBox comboBox=null;
ComboBoxCellRenderer(JComboBox comboBox) {
this.comboBox=comboBox;
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus,
int row, int column) {
setSelectedItem(comboBox.getSelectedItem());
return this;
public class EachRowRenderer implements TableCellRenderer {
protected Hashtable renderers;
protected TableCellRenderer renderer, defaultRenderer;
public EachRowRenderer() {
renderers = new Hashtable();
defaultRenderer = new DefaultTableCellRenderer();
public void add(int row,int column ,TableCellRenderer renderer) {
renderers.put(""+row+column,renderer);
public Component getTableCellRendererComponent(JTable table,
Object value, boolean isSelected, boolean hasFocus,
int row, int column) {
renderer = (TableCellRenderer)renderers.get(""+row+column);
if (renderer == null) {
renderer = defaultRenderer;
return renderer.getTableCellRendererComponent(table,
value, isSelected, hasFocus, row, column);
/** 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 FormEditor.
private void initComponents() {
jScrollPane1 = new javax.swing.JScrollPane();
table = new javax.swing.JTable();
addWindowListener(new java.awt.event.WindowAdapter() {
public void windowClosing(java.awt.event.WindowEvent evt) {
exitForm(evt);
table.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"
Class[] types = new Class [] {
java.lang.Object.class, java.lang.Object.class, java.lang.Object.class, java.lang.Object.class
public Class getColumnClass (int columnIndex) {
return types [columnIndex];
jScrollPane1.setViewportView(table);
getContentPane().add(jScrollPane1, java.awt.BorderLayout.CENTER);
/** Exit the Application */
private void exitForm(java.awt.event.WindowEvent evt) {
System.exit (0);
* @param args the command line arguments
public static void main (String args[]) {
new Render ().show ();
// Variables declaration - do not modify
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTable table;
// End of variables declaration
Please help me.I ran into the same problem in Java 1.4. The problem is that the JTable is not feeding the initial value to the cell editor. I found the following workaround. You have to override the JTable method prepareEditor() like this:
<CODE>
public Component prepareEditor(TableCellEditor editor, int row, int column) {
Component ret = super.prepareEditor(editor, row, column);
// Translate column to the data model coordinates by using the
// identifier. We'll check only for the JComboBox columns (in
// this example columns 8 and 9).
int col = 0;
String id = (String)getColumnModel().getColumn(column).getIdentifier();
if ( id.equals( tableModel.getColumnName(8) ) )
col = 8;
else if ( id.equals( tableModel.getColumnName(9) ) )
col = 9;
if (col == 8 || col == 9) {
String item = (String)tableModel.getValueAt(row, col);
((JComboBox)((DefaultCellEditor)editor).getComponent()).setSelectedItem( item );
return ret;
</CODE>
You have to translate from table coordinates to table model coordinates in case the user reorders column - if you don't allow this for your table then you won't have to do this. -
Problem sorting JTable with custom cell editor
Greetings,
I have created a JTable with a JComboBox as the cell editor for the first column. However, I couldn't simply set the default cell editor for the column to be a JComboBox, since the values within the list were different for each row. So instead, I implemented a custom cell editor that is basically just a hashtable of cell editors that allows you to have a different editor for each row in the table (based on the ideas in the EachRowEditor I've seen in some FAQs - see the code below). I also used a custom table model that is essentially like the JDBCAdapter in the Java examples that populates the table with a query to a database.
The problem comes when I try to sort the table using the TableSorter and TableMap classes recommended in the Java Tutorials on JTables. All of the static (uneditable) columns in the JTable sort fine, but the custom cell editor column doesn't sort at all. I think that the problem is that the hashtable storing the cell editors never gets re-ordered, but I can't see a simple way to do that (how to know the old row index verses the new row index after a sort). I think that I could implement this manually, if I knew the old/new indexes...
Here's the code I use to create the JTable:
// Create the Table Model
modelCRM = new ContactTableModel();
// Create the Table Sorter
sorterCRM = new TableSorter(modelCRM);
// Create the table
tblCRM = new JTable(sorterCRM);
// Add the event listener for the sorter
sorterCRM.addMouseListenerToHeaderInTable(tblCRM);
Then, I populate the column for the custom cell editor like this:
// Add the combo box for editing company
TableColumn matchColumn = getTable().getColumn("Match");
RowCellEditor rowEditor = new RowCellEditor();
// loop through and build the combobox for each row
for (int i = 0; i < getTable().getRowCount(); i++) {
JComboBox cb = new JComboBox();
cb.addItem("New");
//... code to populate the combo box (removed for clarity)
rowEditor.add(i,new DefaultCellEditor(cb, i))); //TF
} // end for
matchColumn.setCellEditor(rowEditor);
Any ideas how to do this, or is there a better way to either sort the JTable or use a combobox with different values for each row? Please let me know if more code would help make this clearer...
Thanks,
Ted
import java.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;
public class RowCellEditor implements TableCellEditor
protected Hashtable editors;
protected TableCellEditor editor, defaultEditor;
public RowCellEditor()
editors = new Hashtable();
defaultEditor = new DefaultCellEditor(new JTextField());
public void add(int row, TableCellEditor editor)
editors.put(new Integer(row), editor);
public Component getTableCellEditorComponent(JTable table,
Object value,
boolean isSelected,
int row,
int column)
editor = (TableCellEditor) editors.get(new Integer(row));
if (editor == null)
editor = defaultEditor;
return editor.getTableCellEditorComponent(table,
value,
isSelected,
row,
column);
public Object getCellEditorValue() {
return editor.getCellEditorValue();
public boolean stopCellEditing() {
return editor.stopCellEditing();
public void cancelCellEditing() {
editor.cancelCellEditing();
public boolean isCellEditable(EventObject anEvent) {
return true; //TF
//return editor.isCellEditable(anEvent);
public void addCellEditorListener(CellEditorListener l) {
editor.addCellEditorListener(l);
public void removeCellEditorListener(CellEditorListener l) {
editor.removeCellEditorListener(l);
public boolean shouldSelectCell(EventObject anEvent) {
return editor.shouldSelectCell(anEvent);
-------------------Well, I found a solution in another post
(see http://forum.java.sun.com/thread.jsp?forum=57&thread=175984&message=953833#955064 for more details).
Basically, I use the table sorter to translate the row index for the hashtable of my custom cell editors. I did this by adding this method to the sorter:
// This method is used to get the correct row for the custom cell
// editor (after the table has been sorted)
public int translateRow(int sortedRowIndex)
checkModel();
return indexes[sortedRowIndex];
} // end translateRow()
Then, when I create the custom cell editor, I pass in a reference to the sorter so that when the getTableCellEditorComponent() method is called I can translate the row to the newly sorted row before returning the editor from the hashtable.
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