private static void addRadioButtonsListeners(final JRadioButton[] radioButtons, ChangeListener listener) {
    final ButtonGroup group = new ButtonGroup();
    for (final JRadioButton radioButton : radioButtons) {
      radioButton.getModel().addChangeListener(listener);
      group.add(radioButton);
    }
    if (group.getSelection() == null) group.setSelected(radioButtons[0].getModel(), true);
  }
private static void addRadioButtonsListeners(final JRadioButton[] radioButtons, ChangeListener listener)