How do I make a sevlet be called once a day?

I have a servlet in which I would like to be called once a day at a certain time? How do I accomplish that?

What is supposed to call it?

Well I don't know. My last resort was to create a java program that wouls spawn a thread and sleep for 24 hours or something. Is it possible to do something that fires the servlet off on startup and then have it be called every 24 hours or whatever time. I know that i could arrange for a servlet to start on startup

Why do you want to use a servlet for that ?? The servlet can be used to start a timer bean e.g. (There is one provided by the J2SE spec if i remember correct) but not to be the timer itself.

I want the sql to delete some records in my db each morning.

Why not just write a little Java program to do it? A servlet doesn't make much sense for that.
bear