@@ -0,0 +1,2340 @@
+/*%0A *  Copyright 2011 Eric F. Savage, code@efsavage.com%0A *%0A *   Licensed under the Apache License, Version 2.0 (the %22License%22);%0A *   you may not use this file except in compliance with the License.%0A *   You may obtain a copy of the License at%0A *%0A *       http://www.apache.org/licenses/LICENSE-2.0%0A *%0A *   Unless required by applicable law or agreed to in writing, software%0A *   distributed under the License is distributed on an %22AS IS%22 BASIS,%0A *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.%0A *   See the License for the specific language governing permissions and%0A *   limitations under the License.%0A */%0Apackage com.ajah.util.compare;%0A%0A/**%0A * %0A * Utility methods for comparisons.%0A * %0A * @author %3Ca href=%22http://efsavage.com%22%3EEric F. Savage%3C/a%3E, %3Ca%0A *         href=%22mailto:code@efsavage.com%22%3Ecode@efsavage.com%3C/a%3E.%0A * %0A */%0Apublic class CompareUtils %7B%0A%0A%09/**%0A%09 * Compares two longs.%0A%09 * %0A%09 * @param first%0A%09 *            First value.%0A%09 * @param second%0A%09 *            Second value.%0A%09 * @return -1 if first %3C second, 1 if first %3E second, 0 if equal.%0A%09 */%0A%09public static int compare(long first, long second) %7B%0A%09%09if (first %3C second) %7B%0A%09%09%09return -1;%0A%09%09%7D else if (first %3E second) %7B%0A%09%09%09return 1;%0A%09%09%7D%0A%09%09return 0;%0A%09%7D%0A%0A%09/**%0A%09 * Compares two objects, with null being considered lesser than not-null.%0A%09 * %0A%09 * @param first%0A%09 *            First value.%0A%09 * @param second%0A%09 *            Second value.%0A%09 * @return -1 if first is null and second is not, 1 if first is not null and%0A%09 *         second is, 0 if both are not-null.%0A%09 * @throws IllegalArgumentException%0A%09 *             If Both values are null, as this means it cannot be passed%0A%09 *             along to a comparator even though they are %22equal%22.%0A%09 */%0A%09public static int compareNulls(Object first, Object second) %7B%0A%09%09if (first == null) %7B%0A%09%09%09if (second == null) %7B%0A%09%09%09%09throw new IllegalArgumentException(%22Both values are null%22);%0A%09%09%09%7D%0A%09%09%09return -1;%0A%09%09%7D%0A%09%09if (second == null) %7B%0A%09%09%09return 1;%0A%09%09%7D%0A%09%09return 0;%0A%09%7D%0A%0A%09/**%0A%09 * Compares two doubles.%0A%09 * %0A%09 * @param first%0A%09 *            First value.%0A%09 * @param second%0A%09 *            Second value.%0A%09 * @return -1 if first %3C second, 1 if first %3E second, 0 if equal.%0A%09 */%0A%09public static int compare(double first, double second) %7B%0A%09%09if (first %3C second) %7B%0A%09%09%09return -1;%0A%09%09%7D else if (first %3E second) %7B%0A%09%09%09return 1;%0A%09%09%7D%0A%09%09return 0;%0A%09%7D%0A%0A%7D

Add compare utility class