--- old/src/java.management/share/classes/sun/management/MonitorInfoCompositeData.java	2019-10-16 19:12:47.861961838 -0700
+++ new/src/java.management/share/classes/sun/management/MonitorInfoCompositeData.java	2019-10-16 19:12:47.649961838 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -40,6 +40,7 @@
  * construction of a CompositeData use in the local case.
  */
 public class MonitorInfoCompositeData extends LazyCompositeData {
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     private final MonitorInfo lock;
 
     private MonitorInfoCompositeData(MonitorInfo mi) {