comboBox.removeMouseListener(mouseListener);
arrowButton.removeMouseListener(mouseListener);
  protected void uninstallListeners()  {    comboBox.removePropertyChangeListener(propertyChangeListener);    propertyChangeListener = null;    comboBox.removeFocusListener(focusListener);    focusListener = null;    comboBox.removeItemListener(itemListener);    itemListener = null;    comboBox.removeKeyListener(keyListener);    keyListener = null;    comboBox.removeMouseListener(mouseListener);    mouseListener = null;    comboBox.getModel().removeListDataListener(listDataListener);    listDataListener = null;    unconfigureArrowButton();  }