[color=#FF0000]问题1：[/color]请看下面注释，CMD/C 是啥东西？

public class OSExecute {

    public static void command(String command){
        boolean err = false;
        try{
            Process process = new ProcessBuilder(command.split(" ")).start();
            BufferedReader results = new BufferedReader(
                    new InputStreamReader(process.getInputStream()));
            String s;
            while((s = results.readLine()) != null){
                System.out.println(s);
            }
            
            BufferedReader errors = new BufferedReader(
                    new InputStreamReader(process.getErrorStream()));
            while((s = errors.readLine()) != null){
                System.err.println(s);
                err = true;
            }
        }catch(Exception e){
            if(!command.startsWith("CMD/C")){  //这里的CMD/C是什么意思，为什么要以这个结尾？
                command("CMD/C " + command);
            }else{
                throw new RuntimeException();
            }
        }
        if(err){
            throw new OSExecuteException("Errors executing " + command);
        }
    }
}

public class OSExecuteDemo {

    public static void main(String[] args){
        OSExecute.command("javap OSExecute");
    }
}

public class OSExecuteException extends RuntimeException{

    public OSExecuteException(String why){
        super(why);
    }
}