Double click listener on JTable in Java

Try this:

mytable.addMouseListener(new MouseAdapter() {
    public void mousePressed(MouseEvent mouseEvent) {
        JTable table =(JTable) mouseEvent.getSource();
        Point point = mouseEvent.getPoint();
        int row = table.rowAtPoint(point);
        if (mouseEvent.getClickCount() == 2 && table.getSelectedRow() != -1) {
            // your valueChanged overridden method 
        }
    }
});