!747
!awt {

m {
  p {
    awt {
      L<JFrame> frames = listAllFrames();
      print(frames.size() + " frame(s) found.");
      
      L<JList> l = allSwingComponentsOfType(JList.class);
      print(l.size() + " list(s) found.");
      
      for (JList list : l) {
        if (!list.isShowing()) {
          print("Skipping list, not showing.");
          continue;
        }
        
        ListModel model = list.getModel();
        print("List entries: " + model.getSize());
        
        S myTag = "Kilroy was here! :)";
        
        if (!(model instanceof DefaultListModel)) {
          //print("Cannot modify, not a DefaultListModel (" + model.getClass().getName() + ")");
          convertToDefaultListModel(list);
          model = list.getModel();
        }
          
        if (model.getSize() != 0 && eq(myTag, model.getElementAt(model.getSize()-1)))
          print("Kilroy was here already :)");
        else {
          print("Trying to add a string (yes it may fail if it's not a string list) :)");
          
          DefaultListModel m = cast model;
          m.addElement(myTag);
        }
      }
    }
  }
}