1607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller/*
2607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
3607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller *
5607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * This code is free software; you can redistribute it and/or modify it
6607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * under the terms of the GNU General Public License version 2 only, as
7607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * published by the Free Software Foundation.  Oracle designates this
8607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * particular file as subject to the "Classpath" exception as provided
9607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * by Oracle in the LICENSE file that accompanied this code.
10607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller *
11607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * This code is distributed in the hope that it will be useful, but WITHOUT
12607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * version 2 for more details (a copy is included in the LICENSE file that
15607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * accompanied this code).
16607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller *
17607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * You should have received a copy of the GNU General Public License version
18607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * 2 along with this work; if not, write to the Free Software Foundation,
19607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller *
21607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * or visit www.oracle.com if you need additional information or have any
23607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * questions.
24607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller */
25607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fullerpackage java.util.function;
26607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller
27607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fullerimport java.util.Objects;
28607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller
29607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller/**
30607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * Represents an operation that accepts a single {@code int}-valued argument and
31607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * returns no result.  This is the primitive type specialization of
32607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * {@link Consumer} for {@code int}.  Unlike most other functional interfaces,
33607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * {@code IntConsumer} is expected to operate via side-effects.
34607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller *
35607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * <p>This is a <a href="package-summary.html">functional interface</a>
36607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * whose functional method is {@link #accept(int)}.
37607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller *
38607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * @see Consumer
39607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller * @since 1.8
40607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller */
41607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller@FunctionalInterface
42607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fullerpublic interface IntConsumer {
43607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller
44607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller    /**
45607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller     * Performs this operation on the given argument.
46607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller     *
47607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller     * @param value the input argument
48607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller     */
49607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller    void accept(int value);
50607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller
51607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller    /**
52607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller     * Returns a composed {@code IntConsumer} that performs, in sequence, this
53607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller     * operation followed by the {@code after} operation. If performing either
54607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller     * operation throws an exception, it is relayed to the caller of the
55607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller     * composed operation.  If performing this operation throws an exception,
56607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller     * the {@code after} operation will not be performed.
57607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller     *
58607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller     * @param after the operation to perform after this operation
59607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller     * @return a composed {@code IntConsumer} that performs in sequence this
60607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller     * operation followed by the {@code after} operation
61607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller     * @throws NullPointerException if {@code after} is null
62607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller     */
63607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller    default IntConsumer andThen(IntConsumer after) {
64607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller        Objects.requireNonNull(after);
65607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller        return (int t) -> { accept(t); after.accept(t); };
66607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller    }
67607050af5a16c46ae53ff4d2c3f47b4ef694b559Neil Fuller}
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