--- a/src/java.base/share/classes/java/io/OptionalDataException.java	Thu Oct 17 20:27:44 2019 +0100
+++ b/src/java.base/share/classes/java/io/OptionalDataException.java	Thu Oct 17 20:53:35 2019 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1996, 2005, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 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
@@ -47,10 +47,11 @@
  */
 public class OptionalDataException extends ObjectStreamException {
 
+    @java.io.Serial
     private static final long serialVersionUID = -8011121865681257820L;
 
     /*
-     * Create an <code>OptionalDataException</code> with a length.
+     * Create an {@code OptionalDataException} with a length.
      */
     OptionalDataException(int len) {
         eof = false;
@@ -58,7 +59,7 @@
     }
 
     /*
-     * Create an <code>OptionalDataException</code> signifying no
+     * Create an {@code OptionalDataException} signifying no
      * more primitive data is available.
      */
     OptionalDataException(boolean end) {