src/share/classes/com/sun/java/swing/plaf/windows/DesktopProperty.java

*** 100,110 ****
       * Updates the UIs of all the known Frames.
       */
      private static void updateAllUIs() {
          // Check if the current UI is WindowsLookAndfeel and flush the XP style map.
          // Note: Change the package test if this class is moved to a different package.
!         Class uiClass = UIManager.getLookAndFeel().getClass();
          if (uiClass.getPackage().equals(DesktopProperty.class.getPackage())) {
              XPStyle.invalidateStyle();
          }
          Frame appFrames[] = Frame.getFrames();
          for (Frame appFrame : appFrames) {
--- 100,110 ----
       * Updates the UIs of all the known Frames.
       */
      private static void updateAllUIs() {
          // Check if the current UI is WindowsLookAndfeel and flush the XP style map.
          // Note: Change the package test if this class is moved to a different package.
!         Class<?> uiClass = UIManager.getLookAndFeel().getClass();
          if (uiClass.getPackage().equals(DesktopProperty.class.getPackage())) {
              XPStyle.invalidateStyle();
          }
          Frame appFrames[] = Frame.getFrames();
          for (Frame appFrame : appFrames) {