src/java.xml/share/classes/com/sun/org/apache/xerces/internal/jaxp/datatype/DurationYearMonthImpl.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2010, 2017 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
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this

@@ -46,11 +46,11 @@
  * @see XMLGregorianCalendar#add(Duration)
  */
 
 class DurationYearMonthImpl
         extends DurationImpl {
-
+    private static final long serialVersionUID = -4430140662861507958L;
 
     /**
      * <p>Constructs a new Duration object by specifying each field individually.</p>
      *
      * <p>All the parameters are optional as long as at least one field is present.