--- a/src/jdk.jshell/share/classes/jdk/jshell/Util.java	Fri Jan 19 15:21:49 2018 +0800
+++ b/src/jdk.jshell/share/classes/jdk/jshell/Util.java	Fri Jan 19 17:11:52 2018 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, 2018, 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
@@ -56,6 +56,11 @@
     static final String DOIT_METHOD_NAME = "do_it$";
 
     /**
+     * The prefix for all anonymous classes upgraded to member classes.
+     */
+    static final String JSHELL_ANONYMOUS = "$JShell$anonymous$";
+
+    /**
      * A pattern matching the full or simple class name of a wrapper class.
      */
     static final Pattern PREFIX_PATTERN = Pattern.compile(