--- old/src/java.desktop/share/classes/java/awt/Container.java	2019-09-21 12:30:13.259000000 -0700
+++ new/src/java.desktop/share/classes/java/awt/Container.java	2019-09-21 12:30:13.023000000 -0700
@@ -3851,6 +3851,7 @@
          * The handler to fire {@code PropertyChange}
          * when children are added or removed
          */
+        @SuppressWarnings("serial") // Not statically typed as Serializable
         protected ContainerListener accessibleContainerHandler = null;
 
         /**