1 package org.apache.maven.cli.compat;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import org.apache.maven.cli.MavenCli;
23 import org.codehaus.classworlds.ClassWorld;
24
25 /**
26 * Main class used to shield the user from the rest of Maven in the event the user is using JDK < 1.5.
27 *
28 * @since 2.2.0
29 */
30 public class CompatibleMain
31 {
32
33 public static void main( String[] args )
34 {
35 ClassWorld classWorld = new ClassWorld( "plexus.core", Thread.currentThread().getContextClassLoader() );
36
37 int result = main( args, classWorld );
38
39 System.exit( result );
40 }
41
42 /**
43 * @noinspection ConfusingMainMethod
44 */
45 public static int main( String[] args, ClassWorld classWorld )
46 {
47 // ----------------------------------------------------------------------
48 // Setup the command line parser
49 // ----------------------------------------------------------------------
50
51 String javaVersion = System.getProperty( "java.specification.version", "1.5" );
52 if ( "1.4".equals( javaVersion ) || "1.3".equals( javaVersion )
53 || "1.2".equals( javaVersion ) || "1.1".equals( javaVersion ) )
54 {
55 System.out.println( "Java specification version: " + javaVersion );
56 System.err.println( "This release of Maven requires Java version 1.5 or greater." );
57 return 1;
58 }
59
60 return MavenCli.main( args, classWorld );
61 }
62 }