--- a/src/java.desktop/share/classes/java/awt/SequencedEvent.java	Tue Sep 24 22:57:28 2019 +0100
+++ b/src/java.desktop/share/classes/java/awt/SequencedEvent.java	Tue Sep 24 18:25:54 2019 -0700
@@ -55,11 +55,13 @@
     private static final LinkedList<SequencedEvent> list = new LinkedList<>();
 
     private final AWTEvent nested;
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     private AppContext appContext;
     private boolean disposed;
     private final LinkedList<AWTEvent> pendingEvents = new LinkedList<>();
 
     private static boolean fxAppThreadIsDispatchThread;
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     private Thread fxCheckSequenceThread;
     static {
         AWTAccessor.setSequencedEventAccessor(new AWTAccessor.SequencedEventAccessor() {