I have to develop an intranet based notification system. There are
many systems spread all over the country, available on LAN. Please
suggest the best option:

1. Socket based system, where clients report a problem to a centeral
server. And server issues alerts.

2. A RMI based system, SAME Details

3. A JMS based system, SAME Details

4. A JINI based system, SAME Details

Considering the fact, that these systems are managed by normal users
who are not Java Techies. It should be easy to start and maintain.