JTable with JButton Cell renderer
How can I get buttons (JButtons) to "depress" properly in a JTable when using them as the cell renderer for a specific column in a JTable? Currently when pressing any button in the column, there is no change in the visible state of the button, i.e. it doesn't change color to create impression of depression.
Is the [problem not the fact that the JTable cell renderers merely rubberstamp each cell with the appropriate display, i.e. the actual component in the cell is not an actual button (just looks like one)? If this is the case, then the same problem will persis with a JToggleButton as well won't it?
Similar Messages
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Performance decrease with custom cell renderer
Hi,
Finally, I have my cell renderer working fine (it was simpler than I thought). Anyway, I'm suspecting something is not working quite well yet. When I try to reorder my colums (by dragging them) they move like slow motion. If I don't register my custom cell renderer, I can move my columns fine. Next is the code of my custom renderer.
class PriorityRenderer extends DefaultTableCellRenderer {
public Component getTableCellRendererComponent(
JTable table, Object value, boolean isSelected,
boolean hasFocus, int row, int column) {
if(value instanceof coloredValue) {
coloredValue cv = (coloredValue)value;
if(isSelected) this.setBackground(table.getSelectionBackground());
else this.setBackground(cv.getbkColor());
this.setForeground(cv.gettxColor());
this.setText(value.toString());
this.setOpaque(true);
return this;
}All the cells of my JTable are "coloredValue"s. This is a little class with a String, two colors and some getter methods.
Can anyone giveme a hint ?
Thanks!!OK! Now the performance problem is gone!! (I don't know why, I didn't touch a thing)
Thanks anyway -
Override the ToolTipText of the JTable with JButton ToolTipTex(pls see msg)
Hi All,
Could you please me to solve this problem?
I have two Icons display on 2 JButtons (2 different ToolTipText for buttons). The Buttons are display on a JPanel. The Panel is display on one of the cell inside JTable. Is it possible that when I move the mouse over each Icon it will displays the ToolTipText of each of the JButton (I am try to replace the ToolTipText of the JTable with the ToolTipText of the JButton when mouse over and when I move the mouse to the next JButton I get a different ToolTipText). The reason I am using the JButton is that in the future I will add actionListener() to do something when the user click on it.
I have try working with glassPane, addMouseMotionListener, MouseEvent.getPoint(), SwingUtilities.convertPoint, SwingUtilities.getDeepestComponentAt.
Thank you in advance.
Note: I am getting the Icons from Object [].Hello, the following is one ugly piece of code but I guess that's pretty much what you were after. Just test the tooltip and you'll see that it depends both on the cell and on which of the two buttons is hovered.import javax.swing.*;
import javax.swing.table.TableCellRenderer;
import java.awt.*;
import java.awt.event.MouseEvent;
public class TestTooltipTable {
private static class CustomTableCellRenderer implements TableCellRenderer {
private JButton theLeftButton;
private JButton theRightButton;
private JPanel thePanel;
public CustomTableCellRenderer() {
theLeftButton = new JButton("left action");
theRightButton = new JButton("right action");
thePanel = new JPanel(new GridLayout(1, 2)) {
public String getToolTipText(MouseEvent e) {
Point p = e.getPoint();
Rectangle leftRect = theLeftButton.getBounds();
Rectangle rightRect = theRightButton.getBounds();
if (leftRect.contains(p)) {
return theLeftButton.getToolTipText();
} else if (rightRect.contains(p)) {
return theRightButton.getToolTipText();
return " ";
thePanel.add(theLeftButton);
thePanel.add(theRightButton);
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected,
boolean hasFocus, int row, int column) {
String text = (String)value;
theLeftButton.setToolTipText("left action " + text);
theRightButton.setToolTipText("right action " + text);
return thePanel;
public static void main(String[] args) {
final JFrame frame = new JFrame(TestTooltipTable.class.getName());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Object[][] data = {{"1", "A"}, {"2", "B"}, {"3", "C"}};
String[] columnNames = {"Number", "Letter"};
JTable table = new JTable(data, columnNames) {
public String getToolTipText(MouseEvent event) {
return super.getToolTipText(event);
table.setDefaultRenderer(Object.class, new CustomTableCellRenderer());
ToolTipManager.sharedInstance().registerComponent(table);
frame.getContentPane().add(new JScrollPane(table));
SwingUtilities.invokeLater(new Runnable() {
public void run() {
frame.pack();
frame.show();
} -
Inconsistent behavior with Custom Cell Renderer
I have two questions:
Questions # 1.
I have created a custom cell renderer for my JTable that changes color if the text property changes and the text contains the letter 'S'. Like
so:
class SchedRenderer extends DefaultTableCellRenderer{
public SchedRenderer(){
super();
final Color c = scSelfCont.panelbg;
this.setForeground(c);
this.addPropertyChangeListener("text",new PropertyChangeListener(){
public void propertyChange(PropertyChangeEvent e){
boolean foundS=false;
String text=e.getNewValue().toString();
for(int i=0;i<text.length();i++)
if(text.charAt(i)=='S'){
foundS=true;
break;
if(foundS){
SchedRenderer.this.setBackground(Color.red);
SchedRenderer.this.setForeground(Color.red);
else{
SchedRenderer.this.setBackground(c);
SchedRenderer.this.setForeground(c);
99% of the time it works just fine. But occasionally the cell will revert back to its original color, and then back to the correct color after clicking somewhere entirely different. I set some breakpoints in the property change handler and it gets called quite frquently even if no change has been made. At first I thought this was a JDK bug, but I am now convinced that there simply must be a better way to do this, any ideas?
Question # 2:
Is there a simple way to change the color of an entire row without selecting it? Currently I am using Custom Cell Renderers to change
colors of cells, but it seems like such an obtuse method. Is there a better way?
Thanks in advance.
Adrian CalvinI have two questions:
Questions # 1.
I have created a custom cell renderer for my JTable that changes color if the text property changes and the text contains the letter 'S'. Like
so:
class SchedRenderer extends DefaultTableCellRenderer{
public SchedRenderer(){
super();
final Color c = scSelfCont.panelbg;
this.setForeground(c);
this.addPropertyChangeListener("text",new PropertyChangeListener(){
public void propertyChange(PropertyChangeEvent e){
boolean foundS=false;
String text=e.getNewValue().toString();
for(int i=0;i<text.length();i++)
if(text.charAt(i)=='S'){
foundS=true;
break;
if(foundS){
SchedRenderer.this.setBackground(Color.red);
SchedRenderer.this.setForeground(Color.red);
else{
SchedRenderer.this.setBackground(c);
SchedRenderer.this.setForeground(c);
[\code]
99% of the time it works just fine. But occasionally the cell will revert back to its original color, and then back to the correct color after clicking somewhere entirely different. I set some breakpoints in the property change handler and it gets called quite frquently even if no change has been made. At first I thought this was a JDK bug, but I am now convinced that there simply must be a better way to do this, any ideas?
Question # 2:
Is there a simple way to change the color of an entire row without selecting it? Currently I am using Custom Cell Renderers to change
colors of cells, but it seems like such an obtuse method. Is there a better way?
Thanks in advance.
Adrian Calvin -
How can we have a JTable with rounded cells
I want to create a JTable with circular or oval shaped Cells, can anybody please help me as to how to go about it?
Thanks in advanceIf you share an Apple ID for purchases then you share all purchases.
You can hide purchases that are not synced locally (with the cloud icon next to them) to the device here:
Settings > Music > tuen Show All Music off
I suggest you create a playlist for each person in iTunes on your computer with only their music on it. Then sync just that playlist to each persons device. -
Adding rows to Jtable with spanded cells
I have a jtable with multiple spanded cells. I am using a custom jtable(the code is in http://www2.gol.com/users/tame/swing/examples/JTableExamples4.html) but i need insert a new row when you click on a button.
I doing this:
jtable.getModel().addRow(vector);
but it throws an exception:
Exception occurred during event dispatching:
java.lang.ArrayIndexOutOfBoundsException: 11 >= 11
at java.util.Vector.elementAt(Unknown Source)
at javax.swing.table.DefaultTableModel.getValueAt(Unknown Source)
at javax.swing.JTable.getValueAt(Unknown Source)
at javax.swing.JTable.prepareRenderer(Unknown Source)
at jp.gr.java_conf.tame.swing.table.MultiSpanCellTableUI.paintCell(MultiSpanCellTableUI.java:96)
at jp.gr.java_conf.tame.swing.table.MultiSpanCellTableUI.paintRow(MultiSpanCellTableUI.java:68)
at jp.gr.java_conf.tame.swing.table.MultiSpanCellTableUI.paint(MultiSpanCellTableUI.java:39)
at javax.swing.plaf.ComponentUI.update(Unknown Source)
at javax.swing.JComponent.paintComponent(Unknown Source)
at javax.swing.JComponent.paint(Unknown Source)
at javax.swing.JComponent.paintChildren(Unknown Source)
at javax.swing.JComponent.paint(Unknown Source)
at javax.swing.JViewport.paint(Unknown Source)
at javax.swing.JComponent.paintChildren(Unknown Source)
at javax.swing.JComponent.paint(Unknown Source)
at javax.swing.JComponent.paintWithBuffer(Unknown Source)
at javax.swing.JComponent._paintImmediately(Unknown Source)
at javax.swing.JComponent.paintImmediately(Unknown Source)
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Can anybody help meI am using the same code in http://www.codeguru.com/java/articles/139.shtml but it thorws the same exception.
I need a solution it is urgent -
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. -
Size of combobox in JTable with custom cell editor
Hi All -
I have a JTable that displays a combobox in certain cells. I have a custom table model, renderer, and editor. All of that works fine. I render the combobox with the renderer, and then return the combobox as an editor in the editor so that it can drop down and actually be of use. My problem is - I set the size of the combobox with a setBounds call in the renderer, I add it to a panel, and return the panel - because I dont want the combobox to take up the entire space of the cell. This approach fails in the editor. The setBounds and setSize calls have no effect. As soon as you click the combobox, the editor takes over and all of a sudden the combobox resizes to the entire area of the cell. I assume this is because in the editor you arent actually placing anything - your simply returning the "editing form" of the component.
So - anybody know of a way to work around this? Worst case, I could just allow the combobox to use the entire area of the cell - but it makes it uglier so I figured I would run it by the forums.
EricRather than just redirect you to my previous answer from ages ago, I'll just give it again. :-)
You can actually do this, but you have to get tricky. By default, the dropdown's width will be the same width as the cell... but it doesn't have to be that way. Essentially what you have to do is override the UI (MetalComboBoxUI) for the combo component. In your new customized UI component subclass (that you set the combo to use), modify the the createPopup() method of this UI class, and add your own logic to set the size of the popup before you return it.
Ideally the size would be based on the computed max width of a rendered item shown in the combo, but really you could set it to whatever just to see how it works. -
JTable :Setting the cell renderer overrides default behaviour
I have a class renderer as shown below.
I would like to apply this renderer to my cells in my JTable (see below):
When I use "setDefaultRenderer" I get the behaviour I expect. Fx. that number columns a right aligned, dates show as dates etc. However when I use "setCellRenderer" it eems that the functionality of the superclass is overridden ??. Any explanation - anyone ?
TableColumnModel tcModel;
JTable table
tcModel = table.getColumnModel();
Enumeration enum;
enum = tcModel.getColumns();
/* This works */
table.setDefaultRenderer(Object.class,new renderer()); //The renderer works for all objects.
while ( enum.hasMoreElements() )
tColumn = (TableColumn)enum.nextElement();
/* But this does not !!? */
/* tColumn.setCellRenderer(new renderer()); */
class renderer extends DefaultTableCellRenderer
public Component getTableCellRendererComponent(
JTable _table,
Object _value,
boolean _isSelected,
boolean _hasFocus,
int _row, int _col)
Component cell = super.getTableCellRendererComponent(_table,_value,_isSelected,_hasFocus,_row,_col);
return cell ;
}I have a class renderer as shown below.
I would like to apply this renderer to my cells in my JTable (see below):
When I use "setDefaultRenderer" I get the behaviour I expect. Fx. that number columns a right aligned, dates show as dates etc. However when I use "setCellRenderer" it eems that the functionality of the superclass is overridden ??. Any explanation - anyone ?
TableColumnModel tcModel;
JTable table
tcModel = table.getColumnModel();
Enumeration enum;
enum = tcModel.getColumns();
/* This works */
table.setDefaultRenderer(Object.class,new renderer()); //The renderer works for all objects.
while ( enum.hasMoreElements() )
tColumn = (TableColumn)enum.nextElement();
/* But this does not !!? */
/* tColumn.setCellRenderer(new renderer()); */
class renderer extends DefaultTableCellRenderer
public Component getTableCellRendererComponent(
JTable _table,
Object _value,
boolean _isSelected,
boolean _hasFocus,
int _row, int _col)
Component cell = super.getTableCellRendererComponent(_table,_value,_isSelected,_hasFocus,_row,_col);
return cell ;
} -
Is it possible to create Table where each cell
will have permanent label (its number) together with an editable text?Yes we can have it like that
for that u need to create a panel with one label and textbox in it
and renderer that column with this panel -
Hi all,
When I make the JComboBox(es) become the cell of the JTable, the list of JComboBox is not expanded as the way a JComboBox behaves when you click on the arrow to see the whole list. I think the JComboBox is not receiving the mouse click event. Another way to say, something keeps the JComboBox from receiving the mouse click.
Has anybody experienced this scenario?
Frank.Is the table cell editable? If it isn't, that is your problem. Enable cell editing for that cell(s).
Stephen -
JTable with more cell editors??
Hi,
I have a JTbale in which I have two special columns- one with buttons and the other similar to the the color changer from the swing tutorial.
My question is should I have now two renders and two editors in this situation?
Tnaxshould I have now two renders and two editors in this situation?You should!
;o)
V.V. -
JTable with custom cell for folding and unfolding rows
Hi,
I am trying to implement a JTable, whereas one of the columns is a custom component, which has a small + in the right upper corner.
When you push this + the JTable should unfold other rows, giving more detail on the current row.
So something like this :
|--------------------------------|
| <some-string> + |
|--------------------------------|Drawing this custom component for the column is no problem but I am having trouble implementing the MouseMotionListener events over this.
If I add a mouseMotionListener to the JTable, I am able to forward these events to my custom class which draws this custom component.
But off course the X and Y coordinates of this MouseEvent are not mapped into the grid of my custom component, which poses my question.
How can I attach to each cell of this custom column of my JTable, a listener as to implement some mouseover and mouseclick stuff ?
In case this post is not all that clear, I will try to add a demo showing my problem.
Kind regards,
Wim.You're reinventing a wheel that's been done a few times. One example is JTreeTable (http://community.java.net/javadesktop/) but there are others.
-
How can I add a row into a JTable with JButton
Hi all. I have the following code:
package gui;
import db.*;
import javax.swing.table.AbstractTableModel;
import java.util.ArrayList;
public class FoundersTable extends AbstractTableModel{
private static final int COLUMNS = 8;
private String columnNames[] = {"��� ����", "���", "�������", "�������", "���������", "��������",
"����� �� ����������", "������ �� ����, �����"};
private ArrayList data;
public FoundersTable(){
data = new ArrayList();
public int getRowCount() {
return data.size();
public int getColumnCount() {
return columnNames.length;
public String getColumnName(int colIndex) {
return columnNames[colIndex];
public Object getValueAt(int rowIndex, int columnIndex) {
return ((ArrayList)data.get(rowIndex)).get(columnIndex);
public void setValueAt(Object value, int rowIndex, int columnIndex) {
((ArrayList)data.get(rowIndex)).set(columnIndex, value);
fireTableCellUpdated(rowIndex, columnIndex);
public void addRow(ArrayList neueZeile) {
data.add(neueZeile);
int index = data.size() - 1;
fireTableRowsInserted(index, index);
public void removeRow(int index) {
data.remove(index);
fireTableRowsDeleted(index, index);
public void removeAllRows() {
data.clear();
fireTableRowsDeleted(0, 0);
public boolean isCellEditable(int rowIndex, int columnIndex) {
return true;
}Now in my MainJFrame class I have one button for additing and one button for removing a selected row. How can I add/remove rows with this two buttons.
ThanksNo my question is how can I add and remove rows WITH buttons My point was the code is the same. You use the addRow(...) method. Why did you write an addRow(...) method if you aren't going to use it?
I don't understand your problem. Do you not know how to write an ActionListener? -
Need help serializing an AbstractTableModel for a JTable with cell editing.
Fun times are ahead. Here we go!
I have a JTable that contains data I'd like to serialize out to a file to be restored and viewed later.
So I tried saving the AbstractTableModel subclass out to a file. Whenever I do this, I get the following error message:
java.io.NotSerializableException: javax.swing.JTable$CellEditorRemover
Now I know for fact that serializing an AbstractTableModel that was installed in a JTable without cell editing works just fine (my old code did exactly that). As a result, I think that the code that handles events in the AbstractTableModel contains references back out to the JTable, which causes the JTable to be saved no matter what (even though I'm just interested in saving the TableModel only). It causes a bigger file than normal, but file size is not an issue. The only issue I have is that CellEditorRemover (an undocumented inner class of JTable), which is automatically installed for JTables with editable cells, is not serializable.
This leads to the following questions:
1. Is there a way to avoid serialization/deserialization of the CellEditorRemover inner class of JTable?
2. Is there a way to save an AbstractTableModel without saving all of the event listeners associated with it?
I think an answer to either of these questions would go a long way towards solving my problem. Otherwise, I'll resign myself to weeping silently in the corner of my office.
Thanks!I would suggest that if you can you only save the
data... but i would do this by using the
externalizable interface.
What you will need to do is have the
writeExternal(ObjectOutputStream out) and
readExternal(ObjectOutputStream out) methods in your
class. These will be responsiable for saving the
data.
Here's an example of what you can do in these
methods... this is just a little tidbit from a program
i've written.public void writeExternal(ObjectOutput out) throws
IOException {
out.writeInt(size);
out.writeObject(drawName);
out.writeInt(playersLength);
for(int i = 0; i < playersLength; i++)
) out.writeObject(players);
out.writeInt(seedsLength);
for(int i = 0; i < seedsLength; i++)
) out.writeObject(seeds[i]);
out.writeInt(drawLength);
for(int i = 0; i < drawLength; i++)
) out.writeObject(draw[i]);
public void readExternal(ObjectInput in) throws
IOException, ClassNotFoundException {
size = in.readInt();
drawName = (String)in.readObject();
playersLength = in.readInt();
for(int i = 0; i < playersLength; i++) players[i] =
= (String)in.readObject();
seedsLength = in.readInt();
for(int i = 0; i < seedsLength; i++) seeds[i] =
= (String)in.readObject();
drawLength = in.readInt();
for(int i = 0; i < drawLength; i++) draw[i] =
= (String)in.readObject();
You can now use your class as you would a Serializable
class, but it will only save the data
Hope this helped
webaf409java
I forgot to add some critical information in my original post. My apologies. :(
I've thought about using Externalizable, but am hesitant to use it because the application would no longer be able to read in files using the old save format (ie, AbstractTableModels for JTables without CellEditorRemovers ). I want to preserve the ability to read the old saved AbstractTableModel formats if possible.
Do you know of a way to revert to the default deserialization mechanism from readExternal? This way, during deserialization, I could do a quick test on the object being read and have the ability to default to the regular deserialization mechanism if the object is of the old type or continue with the new Externalizable stuff if the object is one of the new type. Maintaining file compatibility is key.
Maybe you are looking for
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