if (selectionListener == null) return;
    public void valueChanged(TreeSelectionEvent e) {        //    System.out.println("VALUE CHANGED " + e);        if (selectionListener == null)            return;        if (selectionListener != null) {            for (int i=selectionListener.size()-1; i>=0; i-- ) {                ((TreeSelectionListener)selectionListener.get(i)).valueChanged(e);            }        }        reload();    }