--- old/src/java.desktop/share/classes/java/awt/event/AdjustmentEvent.java	2019-09-21 12:30:19.179000000 -0700
+++ new/src/java.desktop/share/classes/java/awt/event/AdjustmentEvent.java	2019-09-21 12:30:18.975000000 -0700
@@ -104,6 +104,7 @@
      * @serial
      * @see #getAdjustable
      */
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     Adjustable adjustable;
 
     /**