title: Date based licensing logic for Java web app?
body: <p>I am trying to come up with a logic for a date based licensing mechanism for a Java web app. The app needs to be deployed in client sites which may not have access to the Internet (deployed on the intranet). In this case how do I build a licensing mechanism based on Start / End Dates. If I use the server system Date / Time for this, I risk the system admin changing the server date / time in order to keep the locense active. 
  Any suggestions? Windows dektop apps seem to do this, not sure how?</p>
  
  <p>Sanjay.</p>