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Editorial Team
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Asked: 2026-05-18T22:08:39+00:00

Here goes my first question. First of all I’m new with Java and still

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Here goes my first question. First of all I’m new with Java and still struggling to understand events. I have JTable with a custom model that extends AbstractTableModel, a CustomTableModelHandler that implements TableModelListener and a custom TableCellRenderer in order to show some custom tool tips (combination of data from different columns). The user can only make single row selection and I checked the option autocreaterowsorter. When removing a row I use this method:

public void removeRow(int modelIndex) {
    fireTableRowsDeleted(modelIndex, modelIndex);
    rowData.remove(modelIndex);
}

The reason why I first fire the data change event is that I want to update a JLabel with a text that contains data from the row I’m about to delete (probably there is a more elegant way). I’m always passing the model index row, I’ve tried clearing the selection in the view but that didn’t help. I can’t seem to reproduce the error 100% of the times, but it seems it happens most of the times after I edit a row, there’s a column sorting active and then delete a row (this is actually the action after which the error occurs).

So, the question is: how can I tell what is the cause of my issue? The entire code is a bit too big to post it here, but I can provide it if someone wants to have a look at it.

The error (which appears lots of time):

run:
Exception in thread "AWT-EventQueue-0" java.lang.IndexOutOfBoundsException: Index: 1, Size: 1
        at java.util.ArrayList.RangeCheck(ArrayList.java:547)
        at java.util.ArrayList.get(ArrayList.java:322)
        at Contacts.ContactsGUI$CustomTableModel.getValueAt(ContactsGUI.java:1975)
        at javax.swing.JTable.getValueAt(JTable.java:2686)
        at javax.swing.JTable.prepareRenderer(JTable.java:5703)
        at javax.swing.plaf.basic.BasicTableUI.paintCell(BasicTableUI.java:2072)
        at javax.swing.plaf.basic.BasicTableUI.paintCells(BasicTableUI.java:1974)
        at javax.swing.plaf.basic.BasicTableUI.paint(BasicTableUI.java:1770)
        at javax.swing.plaf.ComponentUI.update(ComponentUI.java:143)
        at javax.swing.JComponent.paintComponent(JComponent.java:752)
        at javax.swing.JComponent.paint(JComponent.java:1029)
        at javax.swing.JComponent.paintToOffscreen(JComponent.java:5124)
        at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1479)
        at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1410)
        at javax.swing.RepaintManager.paint(RepaintManager.java:1224)
        at javax.swing.JComponent._paintImmediately(JComponent.java:5072)
        at javax.swing.JComponent.paintImmediately(JComponent.java:4882)
        at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:785)
        at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:713)
        at javax.swing.RepaintManager.seqPaintDirtyRegions(RepaintManager.java:693)
        at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:125)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
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1 Answer

  1. Editorial Team

    The reason why I first fire the data change event is that I want to update a JLabel with a text that contains data from the row I’m about to delete (probably there is a more elegant way).

    This functionality should not be part of the TableModel. The button that invokes the delete logic should save the information you require before invoking the remove row method. Then the removeRow() code should remove the row from your rowData before firing the table rows deleted event.

    but it seems it happens most of the times after I edit a row, there’s a column sorting active and then delete a row

    You need to convert the row view to the row model. I think the code should be something like:

    int modelRow = tableConvertRowIndexToModel( selectedRow );
rowData.remove(modelRow); 
fireTableRowsDeleted(modelRow, modelRow);
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