--- old/src/java.desktop/share/classes/java/awt/desktop/ScreenSleepEvent.java	2018-12-04 16:22:51.000000000 -0800
+++ new/src/java.desktop/share/classes/java/awt/desktop/ScreenSleepEvent.java	2018-12-04 16:22:50.000000000 -0800
@@ -35,11 +35,13 @@
  *
  * @see ScreenSleepListener#screenAboutToSleep(ScreenSleepEvent)
  * @see ScreenSleepListener#screenAwoke(ScreenSleepEvent)
- *
  * @since 9
  */
 public final class ScreenSleepEvent extends AppEvent {
 
+    /**
+     * Use serialVersionUID from JDK 9 for interoperability.
+     */
     private static final long serialVersionUID = 7521606180376544150L;
 
     /**