System.err.println("propertyChange: " + pe.getPropertyName());
else System.err.println("propertyChange: " + pe.getPropertyName());
    public void propertyChange(PropertyChangeEvent pe) {        if ("lookAndFeel".equals(pe.getPropertyName())) {            updateComponentTreeCG(getContentPane());            System.err.println("lookAndFeel Change: " + pe.getPropertyName());        }        System.err.println("propertyChange: " + pe.getPropertyName());    }