| /* |
| * 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 |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package java.util.function; |
| |
| import java.util.Objects; |
| |
| /** |
| * An operation which accepts a single double argument and returns no result. |
| * This is the primitive type specialization of {@link Consumer} for |
| * {@code double}. Unlike most other functional interfaces, |
| * {@code DoubleConsumer} is expected to operate via side-effects. |
| * |
| * @see Consumer |
| * @since 1.8 |
| */ |
| @FunctionalInterface |
| public interface DoubleConsumer { |
| |
| /** |
| * Accept an input value. |
| * |
| * @param value the input value |
| */ |
| void accept(double value); |
| |
| /** |
| * Returns a {@code DoubleConsumer} which performs, in sequence, the operation |
| * represented by this object followed by the operation represented by |
| * another {@code DoubleConsumer}. |
| * |
| * <p>Any exceptions thrown by either {@code accept} method are relayed |
| * to the caller; if performing this operation throws an exception, the |
| * other operation will not be performed. |
| * |
| * @param other a DoubleConsumer which will be chained after this |
| * DoubleConsumer |
| * @return an DoubleConsumer which performs in sequence the {@code accept} method |
| * of this DoubleConsumer and the {@code accept} method of the specified IntConsumer |
| * operation |
| * @throws NullPointerException if other is null |
| */ |
| default DoubleConsumer chain(DoubleConsumer other) { |
| Objects.requireNonNull(other); |
| return (double t) -> { accept(t); other.accept(t); }; |
| } |
| } |