I have to develop a J2EE application (JSF/MyFaces or Struts not sure yet) where certain tasks will be generated and assigned to users of the same app. When 'X' amount of time has passed (and this task is not completed) I want to send a reminder (maybe by e-mail) to this user.
What would be the best way to implement this? Is Quartz really worth to implement for this requirement? (I have never used this tool, so I have to learn it from scratch)
I guess this reminders must be persisted in a DB (the app will also use EJB), so when someone restarts the application or the server, the state is saved.