DTNSim2 is a simulator for Delay-Tolerant Networks (DTNs) written in Java. It is based on Sushant Jain s DTNSim, which was used for the Routing in a delay tolerant network paper. It has been exensively modified.
Start it with this document[13 pages only] if you want to develop some good web application using Java instead of reading large books.
This document prepared by myself. Clearly explains what is JDBC. and how you can connect to a particular database through JSP and Servlets. Examples are given.