在java中使用addShutdownHook

Question

我想按顺序执行以下操作

1.停止jetty服务器

2.从jetty删除已使用的资源

3.重新启动jetty服务器。

我在java中使用shutdownhook完成了以上操作：

<code>

        Thread restartThread = new Thread(){
            public void run(){
                try {
                    sleep(5000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                String osName = System.getProperty("os.name");
                logger.debug("OS name:" + osName);
                if (osName != null
                        && osName.toUpperCase().startsWith("WINDOWS")) {
                    Runtime.getRuntime().addShutdownHook(new Thread() {
                        public void run() {
                            try {
                                List<String> cmdLine = new ArrayList<String>();
                                cmdLine.add("cmd.exe");
                                cmdLine.add("/C");
                                cmdLine.add("start");
                                cmdLine.add("\"\"");
                                cmdLine.add(getBaseDir() + File.separator + "restart.bat");

                                final ProcessBuilder pb = new ProcessBuilder(cmdLine);
                                Process process = pb.start();

                              if (process.exitValue() == 0) {
                                        // after stopping server delete stores
                                        deleteCertificates();

                                        // restores files
                                        restoreFiles(tmpdir, backupfilelist);
                                    } 

                                //p.waitFor();
                            } catch (IOException e) {
                                logger.error("Failed to restart:" + e.getMessage(), e);
                            } 
                        }
                    });
                    System.exit(0);
                } else {
                    try {
                        Runtime.getRuntime().exec("service appservice restart");
                    } catch (IOException e) {
                        logger.error("Failed to restart:" + e.getMessage(), e);
                    }
                }
            }
        };
        restartThread.start();
<code>

我担心的是它会按顺序执行，否则应用程序将无法恢复。