Java tutorial
//package com.java2s; /* * Convenience methods for working with Java arrays. * Copyright (C) 2005-2010 Stephen Ostermiller * http://ostermiller.org/contact.pl?regarding=Java+Utilities * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program 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 for more details. * * See LICENSE.txt for details. */ public class Main { /** * Tests two arrays to see if the arrays are equal. * Two arrays will be equal only if they are the same length * and contain objects that are equal in the same order. * * @param arr1 first array * @param arr2 second array * @return true iff two arguments are equal * @since ostermillerutils 1.06.00 */ public static boolean equal(Object[] arr1, Object[] arr2) { if (arr1 == null && arr2 == null) return true; if (arr1 == null || arr2 == null) return false; if (arr1.length != arr2.length) return false; for (int i = 0; i < arr1.length; i++) { if (!equalObjects(arr1[i], arr2[i])) return false; } return true; } /** * Tests if the two objects are equal * * @param o1 first object * @param o2 second object * @since ostermillerutils 1.06.00 */ private static boolean equalObjects(Object o1, Object o2) { if (o1 == null && o2 == null) return true; if (o1 == null || o2 == null) return false; return o1.equals(o2); } }