1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache license, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the license for the specific language governing permissions and
15 * limitations under the license.
16 */
17
18 package org.apache.logging.log4j.core;
19
20 public class Version {
21
22 public static void main(final String[] args) {
23 System.out.println(getProductString());
24 }
25
26 public static String getProductString() {
27 final Package pkg = Version.class.getPackage();
28 if (pkg == null) {
29 return "Apache Log4j";
30 }
31 return String.format("%s %s", pkg.getSpecificationTitle(), pkg.getSpecificationVersion());
32 }
33
34 }