JTable cell value change listener

Which listener can be used to react to the event of JTable cell value chan开发者_开发技巧ge? I tried using TableModelListener but either I got something wrong, or this listener doesn't react on changing the contents of a cell.

I need to act either to changing the content of a cell or to cell losing focus. What is the best way to do this? Thanks.

class extends JTable {

.... (inside contructor)

addPropertyChangeListener(new PropertyChangeListener() {

    @Override
    public void propertyChange(PropertyChangeEvent evt) {
        if ("tableCellEditor".equals(evt.getPropertyName())) {
            if (isEditing())
                processEditingStarted();
            else
                processEditingStopped();
        }
    }
});

... (end constructor)

protected void processEditingStopped() {
    System.out.println("save " + editingRow + ":" + editingColumn);
}

protected void processEditingStarted() {
    System.out.println("edit " + editingRow + ":" + editingColumn);
    if (editRow > -1 && editColumn > -1)
        oldValue = (String) model.getValueAt(editRow, editColumn);
}

}

more details here: http://tips4java.wordpress.com/2009/06/07/table-cell-listener/

Easy way to react to values changing is to customize a table model and react to setValueAt().

If you're looking to make sure edits "stick" when it loses focus, call this on the table.

table.putClientProperty("terminateEditOnFocusLost", Boolean.TRUE); 

As mentioned by Bill, it maybe easier to "watch" the model rather than the JTable, I used this and was able to track changes by column and row:

list.getModel().addTableModelListener(new TableModelListener() {
            public void tableChanged(TableModelEvent e) {
                System.out.println("Column: " + e.getColumn() + " Row: " + e.getFirstRow());
            }
        });

As mentioned in my comment to their answer, it doesn't detect if a change occured only that the cell was edited. So you'll need to check against the original value somehow. But this saved me messing with my JTable constructor.