src/java.desktop/share/classes/java/awt/desktop/AppForegroundEvent.java

@@ -33,15 +33,17 @@
  * Event sent when the application has become the foreground app, and when it is
  * no longer the foreground app.
  *
  * @see AppForegroundListener#appRaisedToForeground(AppForegroundEvent)
  * @see AppForegroundListener#appMovedToBackground(AppForegroundEvent)
- *
  * @since 9
  */
 public final class AppForegroundEvent extends AppEvent {
 
+    /**
+     * Use serialVersionUID from JDK 9 for interoperability.
+     */
     private static final long serialVersionUID = -5513582555740533911L;
 
     /**
      * Constructs an {@code AppForegroundEvent}.
      *