    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    }