使用java

Question

我正试图杀死一个分离的屏幕会话。最近我用以下java代码启动了一个屏幕会话：

1. 刚刚创建了一个新的ProcessBuilder：

   ProcessBuilder pb = new ProcessBuilder("/bin/sh", "-c", "screen -mdS " + 
   servername + " java " + "-Xms256M -Xmx" + max_ram + "M -jar server.jar 
   ").directory(tempDirectory);
   

2. 开始新流程

   try {
   
     Process p = pb.start(); // start a process
     subserver.setProcess(p); // save the process if we need it later again
     BufferedReader reader = new BufferedReader(new 
   
     InputStreamReader(p.getInputStream()));
     String line;
     while ((line = reader.readLine()) != null) {
       System.out.println(line);
     }
   
   } catch (Exception e) {         
      e.printStackTrace();
   }   
   

但问题是：如何杀死这个新进程？