1 /* 2 * Copyright (c) 2015, 2016, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 package jdk.test.lib.util; 25 26 import java.util.Objects; 27 28 /** 29 * Triple - a three element tuple 30 * 31 * @param <F> first element type 32 * @param <S> second element type 33 * @param <T> third element type 34 */ 35 public class Triple<F, S, T> { 36 private final Pair<F, Pair<S, T>> container; 37 38 /** 39 * Constructor 40 * 41 * @param first first element of the triple 42 * @param second second element of the triple 43 * @param third third element of the triple 44 */ 45 public Triple(F first, S second, T third) { 46 container = new Pair<>(first, new Pair<>(second, third)); 47 } 48 49 /** 50 * Gets first element of the triple 51 */ 52 public F getFirst() { 53 return container.first; 54 } 55 56 /** 57 * Gets second element of the triple 58 */ 59 public S getSecond() { 60 return container.second.first; 61 } 62 63 /** 64 * Gets third element of the triple 65 */ 66 public T getThird() { 67 return container.second.second; 68 } 69 70 @Override 71 public int hashCode() { 72 return container.hashCode(); 73 } 74 75 @Override 76 public boolean equals(Object obj) { 77 if (obj instanceof Triple<?, ?, ?>) { 78 Triple<?, ?, ?> objTriple = (Triple<?, ?, ?>) obj; 79 return Objects.equals(container.first, objTriple.container.first) 80 && Objects.equals(container.second, 81 objTriple.container.second); 82 } 83 return false; 84 } 85 86 @Override 87 public String toString() { 88 return "(" + getFirst() + " : " + getSecond() + " : " + getThird() + ")"; 89 } 90 }