001    /* 
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     *  contributor license agreements.  See the NOTICE file distributed with
004     *  this work for additional information regarding copyright ownership.
005     *  The ASF licenses this file to You under the Apache License, Version 2.0
006     *  (the "License"); you may not use this file except in compliance with
007     *  the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     *  Unless required by applicable law or agreed to in writing, software
012     *  distributed under the License is distributed on an "AS IS" BASIS,
013     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     *  See the License for the specific language governing permissions and
015     *  limitations under the License.
016     *
017     */
018    
019    package org.apache.commons.exec.launcher;
020    
021    import org.apache.commons.exec.OS;
022    
023    /**
024     * Builds a command launcher for the OS and JVM we are running under.
025     */
026    public final class CommandLauncherFactory {
027    
028        private CommandLauncherFactory() {
029        }
030    
031        /**
032         * Factory method to create an appropriate launcher.
033         *
034         * @return the command launcher
035         */
036        public static CommandLauncher createVMLauncher() {
037            // Try using a JDK 1.3 launcher
038            CommandLauncher launcher;
039    
040            if (OS.isFamilyOpenVms()) {
041                launcher = new VmsCommandLauncher();
042            } else {
043                launcher = new Java13CommandLauncher();
044            }
045    
046            return launcher;
047        }
048    }