src/java.base/share/classes/java/util/PropertyResourceBundle.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 1996, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2016, 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

@@ -44,12 +44,10 @@
 import java.io.Reader;
 import java.io.IOException;
 import java.nio.charset.MalformedInputException;
 import java.nio.charset.StandardCharsets;
 import java.nio.charset.UnmappableCharacterException;
-import java.security.AccessController;
-import java.util.Locale;
 import sun.security.action.GetPropertyAction;
 import sun.util.PropertyResourceBundleCharset;
 import sun.util.ResourceBundleEnumeration;
 
 /**

@@ -234,7 +232,7 @@
         return lookup.keySet();
     }
 
     // ==================privates====================
 
-    private Map<String,Object> lookup;
+    private final Map<String,Object> lookup;
 }