JckechBox into JTable -- getselectedrow

Question

I have a problem with Checkbox into JTable
My table has checkbox into first column. If I select checkbox, the program open a new JPanel. To do this I have associated an ActionListener to CheckBox that seems to work fine. This is the related code:
public class AbstractAction implements ActionListener{            
     private static final long serialVersionUID = 1L;     
    public void actionPerformed(ActionEvent evt) {
        JCheckBox cb = (JCheckBox)evt.getSource();
        alarm_NOack_table.getSelectedRow()
        boolean isSel = cb.isSelected();
        if (isSel) {
    } else {
   };As you can see, in the listener I need to know the row number in which there is the selected checkbox, but alarm_NOack_table.getSelectedRow() return always '-1'.
How can I do?
Thanks in advance
Palmis

Answer 1

hey!!!
you will have to use TableModelListener
if you have a look at API
getSelectedRow()
Returns the index of the first selected row, -1 if no row is selected.
it says that only when row is selected. but clicking your check box does not select the whole row. so you need to listen for changes in the table itself. the best would be to write your own table model (extension of AbstractTableModel)
this is how you should be able to get the change a your row where the change occurred
public class YourClass implements TableModelListener{
yourTable.getModel().addTableModelListener(this);
public void tableChanged(TableModelEvent tme){
          int row = tme.getFirstRow();
          int col = tme.getColumn();
//if you want your table model then do this
TableModel tm = (TableModel)tme.getSource();
}and now you should have the row a column where the change has occurred and that's it
hope this will help
v.v.