lisBoardsAvailable.removeAll();
((DefaultListModel) lisBoardsAvailable.getModel()).removeAllElements();
    private void refreshBoardsAvailable() {        lisBoardsAvailable.removeAll();        for (Enumeration i = mapSettings.getBoardsAvailable(); i.hasMoreElements();) {            lisBoardsAvailable.add((String) i.nextElement());        }    }