--- old/src/java.desktop/share/classes/java/applet/Applet.java	2019-09-21 12:30:11.575000000 -0700
+++ new/src/java.desktop/share/classes/java/applet/Applet.java	2019-09-21 12:30:11.203000000 -0700
@@ -544,6 +544,7 @@
     /**
      * The accessible context associated with this {@code Applet}.
      */
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     AccessibleContext accessibleContext = null;
 
     /**