How to Make a Checkbox editable in a JTable?

Question

I have a CustomModel inheriting from the AbstractTable Model. I make the isCellEditable( ) function in the CustomModel return true for all the columns(pl. see code snippet). One of the columns returns a Boolean value (checkbox in the table) and the rest of the columns return Strings (JLabels in the table). I can edit the all the columns which return text (JLabels), but cant seem to edit the column containing the Boolean Value (checkbox). How can I make the checkbox editable?
Help is greatly appreciated...
here is a piece of the sample code:
public class CustomModel extends AbstractTableModel
private Vector _columnMaps = null;
private MyDefaultData _data = null;
public SniTableModel(Vector columnMaps, MyDefaultData data)
_columnMaps = columnMaps;
_data = data;
public Class getColumnClass(int col)
Object value = getValueAt(0, col);
if (value != null)
return value.getClass();
else
return (new Object()).getClass();
public boolean isCellEditable(int row, int col)
return true;
}

Answer 1

Try this:
i) extend DefaultTableModel instead of AbstractTableModel
ii) public Class getColumnClass(int c) {
if (this.getValueAt(0,c) == null)
return super.getColumnClass(c);
else
//convert booleans to checkboxes in the table
return super.getValueAt(0, c).getClass();