src/share/classes/java/util/function/Function.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2010, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2010, 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

@@ -33,10 +33,11 @@
  * @param <R> the type of result objects from the {@code apply} operation. May
  * be the same type as {@code <T>}.
  *
  * @since 1.8
  */
+@FunctionalInterface
 public interface Function<T, R> {
 
     /**
      * Yield an appropriate result object for the input object.
      *