[JDEV] Expiry date

[Colin Bell]

Hi all

I'm trying to create a time limited trial version of my java web app. 
All I need to do is figure out a way to keep track of the date. ie 
store the date and then check it, add a day until x number of days has 
passed. I could just create text file, but that would be too easy to 
find and delete. Does anyone have a technique or tip for doing this 
kind of thing ? Is there perhaps an ability to store a bit of 
information in the JVM indefinitely ?

Many thanks

Colin