[Ldsoss] Automatic Update in Java

[Jay Askren]

I'm working on an open source project in which I want to make updating
the application very easy.  For instance Firefox automatically updates
itself when there is an update.  MLS from the church does the same
thing.  I want to do this with my own Java application.  Does anyone
know of an open source, or at least inexpensive way to do this?  Of
course, I could make it a web app, and it would be a non issue, but
this app is more appropriately a desktop app.

Jay