/**  Copyright (c) 2001 Sun Microsystems, Inc.  All rights*  reserved.**  Redistribution and use in source and binary forms, with or without*  modification, are permitted provided that the following conditions*  are met:**  1. Redistributions of source code must retain the above copyright*  notice, this list of conditions and the following disclaimer.**  2. Redistributions in binary form must reproduce the above copyright*  notice, this list of conditions and the following disclaimer in*  the documentation and/or other materials provided with the*  distribution.**  3. The end-user documentation included with the redistribution,*  if any, must include the following acknowledgment:*  "This product includes software developed by the*  Sun Microsystems, Inc. for Project JXTA."*  Alternately, this acknowledgment may appear in the software itself,*  if and wherever such third-party acknowledgments normally appear.**  4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA"*  must not be used to endorse or promote products derived from this*  software without prior written permission. For written*  permission, please contact Project JXTA at http://www.jxta.org.**  5. Products derived from this software may not be called "JXTA",*  nor may "JXTA" appear in their name, without prior written*  permission of Sun.**  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED*  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES*  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE*  DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR*  ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,*  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT*  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF*  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND*  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,*  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT*  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF*  SUCH DAMAGE.*  ====================================================================**  This software consists of voluntary contributions made by many*  individuals on behalf of Project JXTA.  For more*  information on Project JXTA, please see*  <http://www.jxta.org/>.**  This license is based on the BSD license adopted by the Apache Foundation.**  $Id: ExecFactory.java,v 1.2 2006/06/10 07:03:24 nano Exp $*/package net.jxta.myjxta.util.exec;import java.util.HashMap;import java.util.Map;/** * * @version $Id: ExecFactory.java,v 1.2 2006/06/10 07:03:24 nano Exp $ * * @author james todd [gonzo at jxta dot org] * @author mike mcangus [mcangus at jxta dot org] */public final class ExecFactory {    private static final String OS =        System.getProperties().getProperty("os.name");    private static final Exec DEFAULT_STRATEGY = new BaseExec();    private static final Map<String, Exec> strategies;    static {        strategies = new HashMap<String, Exec>();        Exec win9x = new ExecWindows();        strategies.put("Windows 95", win9x);        strategies.put("Windows 98", win9x);        Exec winnt = new ExecWindowsNT();        strategies.put("Windows NT", winnt);        strategies.put("Windows 2000", winnt);        strategies.put("Windows XP", winnt);        Exec unix = new ExecUnix();        strategies.put("Linux", unix);        strategies.put("SunOS", unix);        Exec macOSX = new ExecMacOSX();        strategies.put("Mac OS X",macOSX);    }    /**     * Returns the Exec for the current OS, or the default Exec if no matching Exec exists for the current OS.     *      * @return the Exec for the current OS, or the default Exec if no matching Exec exists for the current OS.     */    public static Exec getExec() {        return (strategies.containsKey(OS) ?                strategies.get(OS) : DEFAULT_STRATEGY);    }}