1 /* 2 * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/util/LangUtils.java $ 3 * $Revision: 503413 $ 4 * $Date: 2007-02-04 06:22:14 -0800 (Sun, 04 Feb 2007) $ 5 * 6 * ==================================================================== 7 * Licensed to the Apache Software Foundation (ASF) under one 8 * or more contributor license agreements. See the NOTICE file 9 * distributed with this work for additional information 10 * regarding copyright ownership. The ASF licenses this file 11 * to you under the Apache License, Version 2.0 (the 12 * "License"); you may not use this file except in compliance 13 * with the License. You may obtain a copy of the License at 14 * 15 * http://www.apache.org/licenses/LICENSE-2.0 16 * 17 * Unless required by applicable law or agreed to in writing, 18 * software distributed under the License is distributed on an 19 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 20 * KIND, either express or implied. See the License for the 21 * specific language governing permissions and limitations 22 * under the License. 23 * ==================================================================== 24 * 25 * This software consists of voluntary contributions made by many 26 * individuals on behalf of the Apache Software Foundation. For more 27 * information on the Apache Software Foundation, please see 28 * <http://www.apache.org/>. 29 * 30 */ 31 32 package org.apache.http.util; 33 34 /** 35 * A set of utility methods to help produce consistent 36 * {@link Object#equals equals} and {@link Object#hashCode hashCode} methods. 37 * 38 * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a> 39 * 40 * @since 4.0 41 * 42 * @deprecated Please use {@link java.net.URL#openConnection} instead. 43 * Please visit <a href="http://android-developers.blogspot.com/2011/09/androids-http-clients.html">this webpage</a> 44 * for further details. 45 */ 46 @Deprecated 47 public final class LangUtils { 48 49 public static final int HASH_SEED = 17; 50 public static final int HASH_OFFSET = 37; 51 52 /** Disabled default constructor. */ LangUtils()53 private LangUtils() { 54 } 55 hashCode(final int seed, final int hashcode)56 public static int hashCode(final int seed, final int hashcode) { 57 return seed * HASH_OFFSET + hashcode; 58 } 59 hashCode(final int seed, final boolean b)60 public static int hashCode(final int seed, final boolean b) { 61 return hashCode(seed, b ? 1 : 0); 62 } 63 hashCode(final int seed, final Object obj)64 public static int hashCode(final int seed, final Object obj) { 65 return hashCode(seed, obj != null ? obj.hashCode() : 0); 66 } 67 equals(final Object obj1, final Object obj2)68 public static boolean equals(final Object obj1, final Object obj2) { 69 return obj1 == null ? obj2 == null : obj1.equals(obj2); 70 } 71 equals(final Object[] a1, final Object[] a2)72 public static boolean equals(final Object[] a1, final Object[] a2) { 73 if (a1 == null) { 74 if (a2 == null) { 75 return true; 76 } else { 77 return false; 78 } 79 } else { 80 if (a2 != null && a1.length == a2.length) { 81 for (int i = 0; i < a1.length; i++) { 82 if (!equals(a1[i], a2[i])) { 83 return false; 84 } 85 } 86 return true; 87 } else { 88 return false; 89 } 90 } 91 } 92 93 } 94