1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 package org.openoffice.xmerge; 25 26 /** 27 * This class provides a quick utility to check the version of the 28 * jar file. It has a main method that prints out the version 29 * info. It also provides two static methods for runtime classes 30 * to query. 31 * 32 * @author Herbie Ong 33 */ 34 public final class Version { 35 36 private static Package pkg; 37 38 private static Version version; 39 40 static { 41 42 version = new Version(); 43 pkg = version.getClass().getPackage(); 44 } 45 46 /** 47 * Private constructor to provide a singleton instance. 48 */ Version()49 private Version() { 50 } 51 52 /** 53 * Returns specification version. 54 * 55 * @return The specification version. 56 */ getSpecificationVersion()57 public static String getSpecificationVersion() { 58 return pkg.getSpecificationVersion(); 59 } 60 61 /** 62 * Returns implementation version. 63 * 64 * @return The implementation version. 65 */ 66 getImplementationVersion()67 public static String getImplementationVersion() { 68 return pkg.getImplementationVersion(); 69 } 70 71 /** 72 * Main method for printing out version info. 73 * 74 * @param args Array of arguments, not used. 75 */ main(String args[])76 public static void main(String args[]) { 77 78 System.out.println("Specification-Title: " + pkg.getSpecificationTitle()); 79 System.out.println("Specification-Vendor: " + pkg.getSpecificationVendor()); 80 System.out.println("Specification-Version: " + pkg.getSpecificationVersion()); 81 System.out.println("Implementation-Version: " + pkg.getImplementationVersion()); 82 } 83 } 84 85