Servlet agent for 3 days without destroy()

Question

hello,
i've wrote a java program, that calculates every hour a key and write the key it into a file. now i want to change the program into a servlet.
my problem:
i want to start the servlet like this:
www.myurl.com/servlet/myservlet?start=true
then i want to leave my website and the servlet should begin to calculate every hour (if i'm on the wesite or not).
it should be possible to break the servlet with
www.myurl.com/servlet/myservlet?start=false
i don't really know, but i think, that the servlet will be destroy if i leave my website and will not calculate and write in my file anymore.
is there a possibility to do that (perhaps overwriting destroy())???
the key calculation in my java program is in an extra thread.
hope somone can help me,
thanks,

Answer 1

you don't need to start or stopp the servlet. Servlets are started automaticaly upon the first request for that servlet. Or, if you like, you can define a servlet to startup automaticaly when the serlvet runners starts.
Like this, you just have to handle your "main proccess". I would implement a thread in the servlet init() and do all the processessing in there. With the commands like ?stop or ?start you can simply start or stop the thread.