/** Uninstalls the UI delegate for the specified component */ public void uninstallUI(JComponent c) { frame = (JInternalFrame) c; Container cont = ((JInternalFrame) (c)).getContentPane(); if (cont instanceof JComponent) { JComponent content = (JComponent) cont; if (content.getBorder() == handyEmptyBorder) { content.setBorder(null); } } super.uninstallUI(c); }