1 /*
   2  * Copyright (c) 2010, 2012 Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package java.util.function;
  26 
  27 /**
  28  * An operation upon a {@code double} input value. The operation may modify
  29  * external state.
  30  *
  31  * <p/>This is the primitive type specialization of {@link Block} for
  32  * {@code double} and also may be used as a {@code Block<Double>}.
  33  *
  34  * @since 1.8
  35  */
  36 public interface DoubleBlock extends Block<Double> {
  37 
  38     @Override
  39     public default void accept(Double t) { accept((double) t); }
  40 
  41     /**
  42      * Use the {@code double} input value in an operation which may modify
  43      * external state.
  44      *
  45      * @param t the input value
  46      */
  47     public void accept(double t);
  48 }