JTable throwing exception when loaded

[Flavio Nobili]

Hi,
Does anyone know why my JTable is throwing this exception?

java.lang.ArrayIndexOutOfBoundsException: 4 >= 4
at java.util.Vector.elementAt(Unknown Source)
at javax.swing.table.DefaultTableColumnModel.getColumn(Unknown Source)
at javax.swing.plaf.basic.BasicTableUI.paintCells(Unknown Source)
at javax.swing.plaf.basic.BasicTableUI.paint(Unknown Source)
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.paintWithOffscreenBuffer(Unknown Source)
at javax.swing.JComponent.paintDoubleBuffered(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.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

Sometimes it is throwed sometimes not, and I don't know what cause this.
Regards,
Fl�vio.

[Nathan Pruett]

It looks like you have made a custom table model and there is an off-by-one error in one of the methods... i.e. you have a 4 column table, but that means the columns are numbered 0-3, and somewhere something is trying to access column 4.

[Flavio Nobili]

Hi Nathan,
In fact it started to happen when I built a customized TableCellRenderer. It's strange, because the exception sometimes is throwed and sometimes is not, even without changing anything. And I have seven columns, but the exception says the index must be less than 4.

Rgs,
Fl�vio.

[Nathan Pruett]

Post the code from your TableCellRenderer, since it looks like that is what is causing the problem...

[Rob Elliott]

Hi Nathan!

Did you discover what your problem was on this one?

I'm receiving the same exception, stack trace however in my case I'm reordering table columns. After I receive it, I'm able to continue reordering columns without any problems. It only happens on my first re-order attempt??

Thanks,
Rob.