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