Jtable with html in a cell

Hi,
Somebody can tell me how can i put a Jlabel with html in a Jtable cell. Is that possible ?
Tks.

you need to implement a TreeTableCellRenderer
and add the renderer to your table.
check the Java tutorial on table
forgot the link..so you gotta google the link "java Table tutorial"

Similar Messages

JTable with JPanel form as cell renderer/editor

I have a JTable that uses a custom cell editor/renderer. The cell editor/renderer is a JPanel form with labels and text panes. As the user edits the information, I adjust the table row height (setRowHeight) and the JPanel layout manager updates the layout on the cell editor. This all seems to work fine. However, when the user exists the cell and the cell renderer is shown, it has the correct new row height but has not been correctly layed-out for the new row height. How do I force my cell renderer to be re-layout after the editor closes?

That does not seem to work. I have done the following:
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int r, int c)
this.table = (EditorTable) table;
row = r;
column = c;
if (isSelected)
setBackground (Preferences.selectedRowBgColor);
else
setBackground (formBg);
// constructs the panel components
setCellValue (value);
revalidate();
return (this);

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 me

I 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 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.

JTable with multiple colors in one cell

Hello.
I'm looking for a way to display colorized text inside one column of my table.
For Example using the String: "^6en^3try"
I want ^1 to ^7 to be colorcodes for different colors, so that the substring "en" is displayed in pink and the substring "try" in blue.
I tried finding a solution for this on the net, but only found two general ideas on how to accomplish that:
- "custom cell renderer for the column"
- "put html in the cells"
Now I've never worked with a custom cell renderer and I think using html could be a little too much for such a "simple" task.
Any ideas on which way to go and how to do it?

You can use DefaultTableCellRenderer
for example
private class ColorCellRenderer extends DefaultTableCellRenderer{
public void setValue(Object value) {
String cellData = value.toString();
cellData = cellData.trim();
if(cellData.equals("some condition")) {
setForeground(Color.BLUE);
................ write your code
set the default renderer using
setDefaultRenderer
u can use some thing like this
super.setDefaultRenderer(ColorCell.class, new ColorCellRenderer());
ColorCell extends Object {}
and override the getColumnClass method in the table model class to get the custom class
Hope this will help u
Edited by: RA----------------AK on Mar 25, 2010 12:35 AM

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.

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 advance

If 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.

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.

How do I create a JTable with some empty cells in it?

I have a three column JTable. The first column is a String showing description. The second column contains numbers (double) and the third column also contains numbers. In some cases not all cells in a row should contain data. So for instance, I could have row one showing only description (a String in the first column), and then row two showing description (a String in the first column) and a number (a double in the second column) in columns one and two respectively. My problem is that, the data gets copied from the cells with data to the cells which are supposed to be empty. So, how do I create a JTable with some empty cells in it.

I have tried empty strings for those values, but it did not work. My table puts objects in an arraylist called reconciliation. The arraylist takes different objects with the same super class. The code below explains. Are you suggesting I pass null to my constructor?
JTable table = new JTable(new ReconTableModel());The method below is from the table model
protected List<Reconciliation> reconciliation = new ArrayList<Reconciliation>();
protected void fillModel(){
      reconciliation.add(new CashBook("Cash Book Report"," "," "));
      reconciliation.add(new CheckingBankAccount("Checking Bank Account"," "," "));
      reconciliation.add(new BankBalance("Bank Balance As Per Bank Statement",500," "));
      reconciliation.add(new PaymentVouchers("Payment Voucher Receipt",300," "));
      reconciliation.add(new DepositVoucher("Deposit Voucher Receipt",1000," "));
      reconciliation.add(new ReconciledBalance("Reconcilied Bank Balance",1200," "));
      reconciliation.add(new BalanceAt("Bank Balance At",800," "));
      reconciliation.add(new Difference("Difference",400," "));
      Collections.sort( reconciliation, new Comparator<Reconciliation>(){
      public int compare( Reconciliation a, Reconciliation b) {
        return a.getTransactionName().compareTo( b.getTransactionName());
}

JTable with custom column model and table model not showing table header

Hello,
I am creating a JTable with a custom table model and a custom column model. However the table header is not being displayed (yes, it is in a JScrollPane). I've shrunk the problem down into a single compileable example:
Thanks for your help.
import javax.swing.*;
import javax.swing.table.*;
public class Test1 extends JFrame
     public static void main(String args[])
          JTable table;
          TableColumnModel colModel=createTestColumnModel();
          TestTableModel tableModel=new TestTableModel();
          Test1 frame=new Test1();
          table=new JTable(tableModel, colModel);
          frame.getContentPane().add(new JScrollPane(table));
          frame.setSize(200,200);
          frame.setVisible(true);
     private static DefaultTableColumnModel createTestColumnModel()
          DefaultTableColumnModel columnModel=new DefaultTableColumnModel();
          columnModel.addColumn(new TableColumn(0));
          return columnModel;
     static class TestTableModel extends AbstractTableModel
          public int getColumnCount()
               return 1;
          public Class<?> getColumnClass(int columnIndex)
               return String.class;
          public String getColumnName(int column)
               return "col";
          public int getRowCount()
               return 1;
          public Object getValueAt(int row, int col)
               return "test";
          public void setValueAt(Object aValue, int rowIndex, int columnIndex)
}Edited by: 802416 on 14-Oct-2010 04:29
added

Kleopatra wrote:
jduprez wrote:
See http://download.oracle.com/javase/6/docs/api/javax/swing/table/TableColumn.html#setHeaderValue(java.lang.Object)
When the TableColumn is created, the default headerValue is null
So, the header ends up rendered as an empty label (probably of size 0 if the JTable computes its header size based on the renderer's preferred size).nitpicking (can't resist - the alternative is a cleanup round in some not so nice code I produced recently <g>):
- it's not the JTable's business to compute its headers size (and it doesn't, the header's the culprit.) *> - the header should never come up with a zero (or near-to) height: even if there is no title shown, it's still needed as grab to resize/move the columns. So I would consider this sizing behaviour a bug.*
- furthermore, the "really zero" height is a longstanding issue with MetalBorder.TableHeaderBorder (other LAFs size with the top/bottom of their default header cell border) which extends AbstractBorder incorrectly. That's easy to do because AbstractBorder itself is badly implemented
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6459419
Thanks for the opportunity to have some fun :-)
JeanetteNo problem, thanks for the insight :)

Problem with addRow and MultiLine Cell renderer

Hi ,
Ive a problem with no solution to me .......
Ive seen in the forum and Ivent found an answer.......
The problem is this:
Ive a JTable with a custom model and I use a custom multiline cell renderer.
(becuse in the real application "way" hasnt static lenght)
When I add the first row all seem to be ok.....
when I try to add more row I obtain :
java.lang.ArrayIndexOutOfBoundsException: 1
at javax.swing.SizeSequence.insertEntries(SizeSequence.java:332)
at javax.swing.JTable.tableRowsInserted(JTable.java:2926)
at javax.swing.JTable.tableChanged(JTable.java:2858)
at javax.swing.table.AbstractTableModel.fireTableChanged(AbstractTableMo
del.java:280)
at javax.swing.table.AbstractTableModel.fireTableRowsInserted(AbstractTa
bleModel.java:215)
at TableDemo$MyTableModel.addRow(TableDemo.java:103)
at TableDemo$2.actionPerformed(TableDemo.java:256)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:17
64)
at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Abstra
ctButton.java:1817)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel
.java:419)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:257
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonL
istener.java:245)
at java.awt.Component.processMouseEvent(Component.java:5134)
at java.awt.Component.processEvent(Component.java:4931)
at java.awt.Container.processEvent(Container.java:1566)
at java.awt.Component.dispatchEventImpl(Component.java:3639)
at java.awt.Container.dispatchEventImpl(Container.java:1623)
at java.awt.Component.dispatchEvent(Component.java:3480)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3450
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3165)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3095)
at java.awt.Container.dispatchEventImpl(Container.java:1609)
at java.awt.Window.dispatchEventImpl(Window.java:1590)
at java.awt.Component.dispatchEvent(Component.java:3480)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:450)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchTh
read.java:197)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
ad.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:144)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:136)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:99)
This seems to be caused by
table.setRowHeight(row,(getPreferredSize().height+2)); (line 164 of my example code)
About the model I think its ok.....but who knows :-(......
Please HELP me in anyway!!!
Example code :
import javax.swing.*;
import javax.swing.table.*;
import java.text.*;
import javax.swing.text.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
public class TableDemo extends JFrame {
private boolean DEBUG = true;
MyTableModel myModel = new MyTableModel();
MyTable table = new MyTable(myModel);
int i=0;
public TableDemo() {
super("TableDemo");
JButton bottone = new JButton("Aggiungi 1 elemento");
table.setPreferredScrollableViewportSize(new Dimension(500, 70));
//table.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
//Add the scroll pane to this window.
getContentPane().add(bottone,BorderLayout.NORTH);
getContentPane().add(scrollPane, BorderLayout.CENTER);
bottone.addActionListener(Add_Action);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
class MyTable extends JTable {
MultiLineCellRenderer multiRenderer=new MultiLineCellRenderer();
MyTable(TableModel tm)
super(tm);
public TableCellRenderer getCellRenderer(int row,int col) {
          if (col==1) return multiRenderer;
          else return super.getCellRenderer(row,col);
class MyTableModel extends AbstractTableModel {
Vector data=new Vector();
final String[] columnNames = {"Name",
"Way",
"DeadLine (ms)"
public int getColumnCount() { return 3; }
public int getRowCount() { return data.size(); }
public Object getValueAt(int row, int col) {
Vector rowdata=(Vector)data.get(row);
                                                            return rowdata.get(col); }
public String getColumnName(int col) {
return columnNames[col];
public void setValueAt (Object value, int row,int col)
     //setto i dati della modifica
Vector actrow=(Vector)data.get(row);
actrow.set(col,value);
     this.fireTableCellUpdated(row,col);
     public Class getColumnClass(int c)
          return this.getValueAt(0,c).getClass();
     public boolean isCellEditable(int row, int col) {
//Note that the data/cell address is constant,
//no matter where the cell appears onscreen.
if (col == 1)
return false;
else
return true;
public void addRow (String name,ArrayList path,Double dead) {
     Vector row =new Vector();
     row.add(name);
     row.add(path);
     row.add(dead);
     row.add(name); //!!!Mi tengo questo dato da utilizzare come key per andare a
     //prendere il path nella lista dei paths di Project
     //(needed as key to retrive data if name in col. 1 is changed)
     data.add(row);
     //Inspector.inspect(this);
     System.out.println ("Before firing Adding row...."+this.getRowCount());
     this.fireTableRowsInserted(this.getRowCount(),this.getRowCount());
public void delRow (String namekey)
for (int i=0;i<this.getRowCount();i++)
if (namekey.equals(this.getValueAt(i,3)))
data.remove(i);
this.fireTableRowsDeleted(i,i);
//per uscire dal ciclo
i=this.getRowCount();
public void delAllRows()
int i;
int bound =this.getRowCount();
for (i=0;i<bound;i++)
     {data.remove(0);
     System.out.println ("Deleting .."+data);
this.fireTableRowsDeleted(0,i);
class MultiLineCellRenderer extends JTextArea implements TableCellRenderer {
private Hashtable rowHeights=new Hashtable();
public MultiLineCellRenderer() {
setEditable(false);
setLineWrap(true);
setWrapStyleWord(true);
//this.setBorder(new Border(
public Component getTableCellRendererComponent(JTable table,Object value,                              boolean isSelected, boolean hasFocus, int row, int column) {
//System.out.println ("Renderer called"+value.getClass());
if (value instanceof ArrayList) {
String way=new String     (value.toString());
setText(way);
TableColumn thiscol=table.getColumn("Way");
//System.out.println ("thiscol :"+thiscol.getPreferredWidth());
//setto il size della JTextarea sulle dimensioni della colonna
//per quanto riguarda il widht e su quelle ottenute da screen per l'height
this.setSize(thiscol.getPreferredWidth(),this.getPreferredSize().height);
// set the table's row height, if necessary
//System.out.println ("Valore getPreferred.height"+getPreferredSize().height);
     if (table.getRowHeight(row)!=(this.getPreferredSize().height+2))
     {System.out.println ("Setting Row :"+row);
         System.out.println ("Dimension"+(getPreferredSize().height+2));
         System.out.println ("There are "+table.getRowCount()+"rows in the table ");
         if (row<table.getRowCount())
         table.setRowHeight(row,(getPreferredSize().height+2));
else
setText("");
return this;
/**Custom JTextField Subclass che permette all'utente di immettere solo numeri
class WholeNumberField extends JTextField {
private Toolkit toolkit;
private NumberFormat integerFormatter;
public WholeNumberField(int value, int columns) {
super(columns);
toolkit = Toolkit.getDefaultToolkit();
integerFormatter = NumberFormat.getNumberInstance(Locale.US);
integerFormatter.setParseIntegerOnly(true);
setValue(value);
public int getValue() {
int retVal = 0;
try {
retVal = integerFormatter.parse(getText()).intValue();
} catch (ParseException e) {
// This should never happen because insertString allows
// only properly formatted data to get in the field.
toolkit.beep();
return retVal;
public void setValue(int value) {
setText(integerFormatter.format(value));
protected Document createDefaultModel() {
return new WholeNumberDocument();
protected class WholeNumberDocument extends PlainDocument {
public void insertString(int offs,
String str,
AttributeSet a)
throws BadLocationException {
char[] source = str.toCharArray();
char[] result = new char[source.length];
int j = 0;
for (int i = 0; i < result.length; i++) {
if (Character.isDigit(source))
result[j++] = source[i];
else {
toolkit.beep();
System.err.println("insertString: " + source[i]);
super.insertString(offs, new String(result, 0, j), a);
ActionListener Add_Action = new ActionListener() {
          public void actionPerformed (ActionEvent e)
          System.out.println ("Adding");
          ArrayList way =new ArrayList();
          way.add(new String("Uno"));
          way.add(new String("Due"));
          way.add(new String("Tre"));
          way.add(new String("Quattro"));
          myModel.addRow(new String("Nome"+i++),way,new Double(0));
public static void main(String[] args) {
TableDemo frame = new TableDemo();
frame.pack();
frame.setVisible(true);

In the addRow method, change the line
this.fireTableRowsInserted(this.getRowCount(),this.getRowCount()); to
this.fireTableRowsInserted(data.size() - 1, data.size() - 1);Sai Pullabhotla

JTable with JCheckbox problems

Ok so I have a couple of questions. I have a JTable with a column represented as a checkbox.
1. If I put the checkbox column as the first in the table, the rest of the cells are blank/null. Any idea what the reason is?
2. What is the best workaround to having draggable columns, meaning icons/checkboxes don't render if you move the columns around?
3. Does anyone have some links to good resources on JTables and things like custom components in them. I have googled but don't get many good links so would appreciate any help
Code snippet as follows:
public class ClobberTableCellRenderer implements TableCellRenderer
private JPanel renderPanel = new JPanel(new BorderLayout());
private JLabel renderLbl = new JLabel("");
private JCheckBox checked = new JCheckBox();
private Icon successIcon;
private Icon errorIcon;
public Component getTableCellRendererComponent(JTable table,
Object value,
boolean isSelected,
boolean hasFocus,
int row,
int column)
String columnName = table.getModel().getColumnName(column);
if (value == null)
return null;
else if ("Status".equals(columnName) && "ok".equals(value))
renderLbl.setIcon(successIcon);
renderLbl.setText("");
renderPanel.remove(checked);
else if ("Status".equals(columnName) && "error".equals(value))
renderLbl.setIcon(errorIcon);
renderLbl.setText("");
renderPanel.remove(checked);
else if ("Active".equals(columnName))
renderLbl.setText("");
renderPanel.add(checked);
renderPanel.setBackground(Color.white);
else
renderLbl.setHorizontalAlignment(value instanceof Date || value instanceof Number ? JLabel.RIGHT : JLabel.LEFT);
renderLbl.setIcon(null);
renderLbl.setText(value instanceof Date ? df.format((Date)value) : value.toString());
renderLbl.setToolTipText(null);
renderPanel.setToolTipText(null);
renderPanel.remove(checked);
if (isSelected)
renderPanel.setBackground((Color)UIManager.getDefaults().get("Table.selectionBackground"));
else
renderPanel.setBackground((Color)UIManager.getDefaults().get("Table.background"));
return renderPanel;
}

Hi :) I have also worked on JTables and JCheckBoxes before. This article
helped me a lot: http://www-128.ibm.com/developerworks/java/library/j-jtable/

Need Help with HTML Batch Processing

Hi,
New to this forum so be kind
I am trying to work out a way to batch process html's.
The html template is used in our eBay listings.
All the information I want to change is the same.
Eg in my template I have the number "0234" it appears for 6 times, sometimes in the text sometimes in part of the image title I am loading.
I then have an excel sheet listing all my codes that i need to make htmls for - 0234, 0235, 0236 etc etc...
I use say 10 templates depending on what number im doing.
So next cell to the codes (in excel) I list what template I would need.
Now I know in dreamweaver I can search for "0234" in my html & replace to create my new html. But I have 1000's to do, and I am sure I am doing it a long way manually.
Is it possible to use the excel sheet and dreamweaver together to process all these changes in a scripted batch system? and even load which html to use?
Or maybe use a different software?
Any advice would be much appreciated.
Kind Regards

The closest to this I have done was in using Photoshop and text files to create hundreds of photoshop designed banners that all had different copy/type on them but based on a template and, the same idea but with pharmacy magnets using InDesign and Excel.
The idea is that you put text boxes in the document and specify a variable for them and then equate those boxes either to variables in a text file or to column headers in an Excel file.
Google on "Data Merging" and perhaps you'll find something.
I'm not aware of a way to do this with html documents but if you approach the html as just a text file, then conceptually, you should be able to create a template whereby you assign a variable to certain divs or input boxes or whatever. Then, you might have to re-process the entire lot to remove the code needed to distinguish a field as dynamic but that would easier to remove.
I'll watch this post as well because massive replacements are always something to know about!

Can we create JTable with multiple rows with varying number of columns ?

Hi All,
I came across a very typical problem related to JTable. My requirement is that cells should be added dynamically to the JTable. I create a JTable with initial size of 1,7 (row, columns) size. Once the 7 columns are filled with data, a new row should be created. But the requirement is, the new row i.e. second row should have only one cell in it initially. The number of cells should increase dynamically as the data is entered. The table is automatically taking the size of its previous row when new row is added. I tried by using setColumnCount() to change the number of columns to '1' for the second row but the same is getting applied to the first row also.
So can you please help me out in this regard ? Is it possible to create a JTable of uneven size i.e. multiple rows with varying number of columns in each row ?
Thanks in Advance.

Well a JTable is always going to paint the same number of columns for each row. Anything is possible if you want to rewrite the JTable UI to do this, but I wouldn't recommend it. (I certainly don't know how to do it).
A simpler solution might be to override the isCellEditable(...) method of JTable and prevent editing of column 2 until data in column 1 has been entered etc., etc. You may also want to provide a custom renderer that renderers the empty column differently, maybe with a grey color instead of a white color.

JTable with ImageIcons does not react to even handling

Hi.
I have a populated JTable with ONLY ImageIcons in it. I need to generate event responses on mouseClicks. However, any event listener I associate with this, nothing seems to be happening.
(Somehow, I'm guess the ImageIcons - which are rendered on a JLabel, are/is the source of all troubles!!)
The code is below :
import java.io.File;
import java.awt.Point;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Container;
import java.awt.Component;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JFrame;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JTable;
import javax.swing.ImageIcon;
import javax.swing.JScrollPane;
import javax.swing.ListSelectionModel;
import javax.swing.table.TableColumn;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.AbstractTableModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
*     Entry point for the Images Table.
*     @author Raj Gaurav
public class SpecialCharacterDialog extends JDialog{
     String collectionString[] = null;
     ImageIcon suite[] = null;
     public SpecialCharacterDialog() {
          Container contentPane = getContentPane();
          //     Create the Table Model and create the Table from the model
          MyTableModel model = new MyTableModel();
          JTable table = new JTable(model);
          table.setDefaultRenderer(ImageIcon.class, new CustomCellRenderer());
          table.setCellSelectionEnabled(true);
          table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
ListSelectionModel rowSM = table.getSelectionModel();
rowSM.addListSelectionListener(new ListSelectionListener() {
public void valueChanged(ListSelectionEvent e) {
//Ignore extra messages.
if (e.getValueIsAdjusting()) return;
ListSelectionModel lsm = (ListSelectionModel)e.getSource();
if (lsm.isSelectionEmpty()) {
System.out.println("No rows are selected.");
} else {
int selectedRow = lsm.getMinSelectionIndex();
System.out.println("Row " + selectedRow
+ " is now selected.");
          //     Add the table to the contentPane
          JScrollPane pane = new JScrollPane(table);
          contentPane.add(pane);
*     This class contains all the DATA information, the ImageIcons
*     needed for display.
class SymbolCollection {
     final static int NUMBER_OF_COLUMNS = 15;
     private String collectionString[] = null;
     private ImageIcon suite[] = null;
     *     Constructor : Initialises all the ImageIcon and their Names.
     public SymbolCollection() {
          File f = new File("C:\\Test\\Images");
          collectionString = f.list();
          int numberOfImages = collectionString.length;
          suite = new ImageIcon[numberOfImages];
          for(int i = 0;i < numberOfImages; i++) {
               suite[i] = new ImageIcon("C:\\Test\\images" + File.separator + collectionString);
     *     Returns the total number of images in "images" folder.
     public int getTotalNumberOfImages() {
          return suite.length;
     *     Returns the target ImageIcon.
     public ImageIcon getImageIconAt(int number) {
          return suite[number];
     *     Returns the target ImageIcon Name.
     public String getImageIconNameAt(int number) {
          return collectionString[number];
     *     Returns an array of ALL the ImageIcons available.
     public ImageIcon[] getImageIcons() {
          return suite;
     *     Returns an array of ALL the ImageIcon names available
     public String[] getImageIconNames() {
          return collectionString;
     *     Returns TRUE for all cells
     public boolean isEditable(int row, int col) {
          return true;
*     Defines the table model for the tabel.
class MyTableModel extends AbstractTableModel {
     private SymbolCollection collection = null;
     private Object data[][] = null;
     *     Constructor for the TableModel. Initialises the "data" field for table.
     public MyTableModel() {
          int countOfImages = 0;
          collection = new SymbolCollection();
          data = new Object[getRowCount()][SymbolCollection.NUMBER_OF_COLUMNS];
          for(int i = 0; i < getRowCount(); i++) {
               for(int j = 0; j < SymbolCollection.NUMBER_OF_COLUMNS; j++) {
                    if(countOfImages == collection.getTotalNumberOfImages()) {
                         break;
                    data[i][j] = collection.getImageIconAt(countOfImages);
                    countOfImages++;
     *     Returns the number of rows for this table.
     *     It is calculated as : TotalNumber/NumberOfColumns if remainder is ZERO or,
     *                              TotalNumber/NumberOfColumns + 1 if not.
     public int getRowCount() {
          int numberOfRows = collection.getTotalNumberOfImages()/SymbolCollection.NUMBER_OF_COLUMNS;
          if(numberOfRows == 0) {
               return numberOfRows;
          else {
               return numberOfRows + 1;
     *     Returns the number of Columns for this table
     public int getColumnCount() {
          return SymbolCollection.NUMBER_OF_COLUMNS;
     *     Returns the CLASS data type for this table
     public Class getColumnClass(int col) {
          return collection.getImageIconAt(0).getClass();
     *     Returns the table data at (row, col).
     public Object getValueAt(int row, int col) {
          return data[row][col];
*     Renders the table to display images in individual cells
class CustomCellRenderer extends JLabel implements TableCellRenderer {
     public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int col) {
          setIcon((ImageIcon)value);
          return this;

Hi.
I have a populated JTable with ONLY ImageIcons in it. I need to generate event responses on mouseClicks. However, any event listener I associate with this, nothing seems to be happening.
(Somehow, I'm guess the ImageIcons - which are rendered on a JLabel, are/is the source of all troubles!!)
The code is below :
import java.io.File;
import java.awt.Point;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Container;
import java.awt.Component;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JFrame;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JTable;
import javax.swing.ImageIcon;
import javax.swing.JScrollPane;
import javax.swing.ListSelectionModel;
import javax.swing.table.TableColumn;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.AbstractTableModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
*     Entry point for the Images Table.
*     @author Raj Gaurav
public class SpecialCharacterDialog extends JDialog{
     String collectionString[] = null;
     ImageIcon suite[] = null;
     public SpecialCharacterDialog() {
          Container contentPane = getContentPane();
          //     Create the Table Model and create the Table from the model
          MyTableModel model = new MyTableModel();
          JTable table = new JTable(model);
          table.setDefaultRenderer(ImageIcon.class, new CustomCellRenderer());
          table.setCellSelectionEnabled(true);
          table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
ListSelectionModel rowSM = table.getSelectionModel();
rowSM.addListSelectionListener(new ListSelectionListener() {
public void valueChanged(ListSelectionEvent e) {
//Ignore extra messages.
if (e.getValueIsAdjusting()) return;
ListSelectionModel lsm = (ListSelectionModel)e.getSource();
if (lsm.isSelectionEmpty()) {
System.out.println("No rows are selected.");
} else {
int selectedRow = lsm.getMinSelectionIndex();
System.out.println("Row " + selectedRow
+ " is now selected.");
          //     Add the table to the contentPane
          JScrollPane pane = new JScrollPane(table);
          contentPane.add(pane);
*     This class contains all the DATA information, the ImageIcons
*     needed for display.
class SymbolCollection {
     final static int NUMBER_OF_COLUMNS = 15;
     private String collectionString[] = null;
     private ImageIcon suite[] = null;
     *     Constructor : Initialises all the ImageIcon and their Names.
     public SymbolCollection() {
          File f = new File("C:\\Test\\Images");
          collectionString = f.list();
          int numberOfImages = collectionString.length;
          suite = new ImageIcon[numberOfImages];
          for(int i = 0;i < numberOfImages; i++) {
               suite[i] = new ImageIcon("C:\\Test\\images" + File.separator + collectionString);
     *     Returns the total number of images in "images" folder.
     public int getTotalNumberOfImages() {
          return suite.length;
     *     Returns the target ImageIcon.
     public ImageIcon getImageIconAt(int number) {
          return suite[number];
     *     Returns the target ImageIcon Name.
     public String getImageIconNameAt(int number) {
          return collectionString[number];
     *     Returns an array of ALL the ImageIcons available.
     public ImageIcon[] getImageIcons() {
          return suite;
     *     Returns an array of ALL the ImageIcon names available
     public String[] getImageIconNames() {
          return collectionString;
     *     Returns TRUE for all cells
     public boolean isEditable(int row, int col) {
          return true;
*     Defines the table model for the tabel.
class MyTableModel extends AbstractTableModel {
     private SymbolCollection collection = null;
     private Object data[][] = null;
     *     Constructor for the TableModel. Initialises the "data" field for table.
     public MyTableModel() {
          int countOfImages = 0;
          collection = new SymbolCollection();
          data = new Object[getRowCount()][SymbolCollection.NUMBER_OF_COLUMNS];
          for(int i = 0; i < getRowCount(); i++) {
               for(int j = 0; j < SymbolCollection.NUMBER_OF_COLUMNS; j++) {
                    if(countOfImages == collection.getTotalNumberOfImages()) {
                         break;
                    data[i][j] = collection.getImageIconAt(countOfImages);
                    countOfImages++;
     *     Returns the number of rows for this table.
     *     It is calculated as : TotalNumber/NumberOfColumns if remainder is ZERO or,
     *                              TotalNumber/NumberOfColumns + 1 if not.
     public int getRowCount() {
          int numberOfRows = collection.getTotalNumberOfImages()/SymbolCollection.NUMBER_OF_COLUMNS;
          if(numberOfRows == 0) {
               return numberOfRows;
          else {
               return numberOfRows + 1;
     *     Returns the number of Columns for this table
     public int getColumnCount() {
          return SymbolCollection.NUMBER_OF_COLUMNS;
     *     Returns the CLASS data type for this table
     public Class getColumnClass(int col) {
          return collection.getImageIconAt(0).getClass();
     *     Returns the table data at (row, col).
     public Object getValueAt(int row, int col) {
          return data[row][col];
*     Renders the table to display images in individual cells
class CustomCellRenderer extends JLabel implements TableCellRenderer {
     public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int col) {
          setIcon((ImageIcon)value);
          return this;

Jtable with html in a cell

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