01 /*
02 * Java Genetic Algorithm Library (jenetics-1.5.0).
03 * Copyright (c) 2007-2013 Franz Wilhelmstötter
04 *
05 * Licensed under the Apache License, Version 2.0 (the "License");
06 * you may not use this file except in compliance with the License.
07 * You may obtain a copy of the License at
08 *
09 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 * Author:
18 * Franz Wilhelmstötter (franz.wilhelmstoetter@gmx.at)
19 */
20 package org.jenetics.util;
21
22 import static org.jenetics.util.object.eq;
23 import static org.jenetics.util.object.hashCodeOf;
24
25
26 /**
27 * @author <a href="mailto:franz.wilhelmstoetter@gmx.at">Franz Wilhelmstötter</a>
28 * @since 1.0
29 * @version 1.0 — <em>$Date: 2013-08-29 $</em>
30 */
31 class Tuple2<T1, T2> {
32
33 final T1 _1;
34 final T2 _2;
35
36 public Tuple2(final T1 t1, final T2 t2) {
37 _1 = t1;
38 _2 = t2;
39 }
40
41 @Override
42 public int hashCode() {
43 return hashCodeOf(getClass()).and(_1).and(_2).value();
44 }
45
46 @Override
47 public boolean equals(final Object obj) {
48 if (obj == this) {
49 return true;
50 }
51 if (obj == null || obj.getClass() != getClass()) {
52 return false;
53 }
54
55 final Tuple2<?, ?> tuple = (Tuple2<?, ?>)obj;
56 return eq(_1, tuple._1) && eq(_2, tuple._2);
57 }
58
59 @Override
60 public String toString() {
61 return "(" + _1 + ", " + _2 + ")";
62 }
63
64 }
65
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