src/share/classes/java/io/FileSystem.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2013, 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

@@ -235,10 +235,13 @@
         } else {
             return false;
         }
     }
 
+    // NUL character
+    static final char CHAR_NUL = '\u0000';
+
     static {
         useCanonCaches      = getBooleanProperty("sun.io.useCanonCaches",
                                                  useCanonCaches);
         useCanonPrefixCache = getBooleanProperty("sun.io.useCanonPrefixCache",
                                                  useCanonPrefixCache);