I have created and am working on a server-application that monitors for specific folders and takes appropriate actions whenever files are being added.

Now I come to the point where I want to be able to shutdown the program, for example for applying a patch.

The server runs simply in a command prompt, how can I signal that I want to perform maintenance on it? I do not think reading `System.in` is feasible as I am also outputting text in the prompt.

Regards.