ui/src/main/java/ucar/util/prefs/ui/PrefPanel.java
public void removeActionListener(ActionListener l) {
    listenerList.remove(java.awt.event.ActionListener.class, l);
  }
public void removeActionListener(ActionListener l) {
    listenerList.remove(java.awt.event.ActionListener.class, l);
  }
public void removeActionListener ( ActionListener l ) { listenerList . remove ( java . awt . event . ActionListener . class , l ) ; }
Remove listener
Remove listener