src/java.desktop/share/classes/java/awt/event/AdjustmentEvent.java

@@ -102,10 +102,11 @@
      * The adjustable object that fired the event.
      *
      * @serial
      * @see #getAdjustable
      */
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     Adjustable adjustable;
 
     /**
      * {@code value} will contain the new value of the
      * adjustable object.  This value will always be  in a