protected void uninstallDefaults(JFileChooser fc) {
   uninstallIcons(fc);
   uninstallStrings(fc);
   if (fc.getTransferHandler() instanceof UIResource) {
     fc.setTransferHandler(null);
   }
 }
 protected void installDefaults(JFileChooser fc) {
   installIcons(fc);
   installStrings(fc);
   usesSingleFilePane = UIManager.getBoolean("FileChooser.usesSingleFilePane");
   readOnly = UIManager.getBoolean("FileChooser.readOnly");
   TransferHandler th = fc.getTransferHandler();
   if (th == null || th instanceof UIResource) {
     fc.setTransferHandler(defaultTransferHandler);
   }
   LookAndFeel.installProperty(fc, "opaque", Boolean.FALSE);
 }