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

*** 1,7 ****
  /*
!  * Copyright (c) 2012, 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
--- 1,7 ----
  /*
!  * Copyright (c) 2012, 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
*** 27,36 ****
--- 27,37 ----
  /**
   * An operation on a single {@code long} operand yielding a {@code long} result.
   *
   * @since 1.8
   */
+ @FunctionalInterface
  public interface LongUnaryOperator {
  
      /**
       * Returns the {@code long} result of the operation upon the {@code long}
       * operand.