Gibson Research Corp which has a utility you can access called ShieldsUp, which will let you check to see if you have any drives shares when you are on the internet. It also has some links to other port probing sites. It was a real eye opener, when you run it. The site also offers some information on the 911 virus, as well as a link to a site which has a free firewall for individual use.
Encryption and Security Practical Cryptosystems and their Strength
http://www.cloudscape.com for a free evaluation version of OODBMS to run Rick Lowe's stored procedure demonstration.
JDBC Code Templates -Code snippets that show you the proper syntax for JDBC calls. You need a password to see it. However, it is free.
GUI Design / Swing Objectives
Sun's Java Look and Feel Design Guide Lines
Swing by Robinson and Vorobiev
Java 3D API free download
Running And Debugging An RMI Application Locally
http://www.javaskyline.com/learnrmi.html (Who are trying to implement the assignment using RMI, we can take a look at the examples.)
Java Enterprise in a Nutshell by Flannagan, Farley, Crawford and Magnusson
Multi-threads and Synchronization
Concurrency: State Models & Java Programs
James W. Cooper's "Java Design Patterns, A Tutorial"
Bruce Eckel has a book in preliminary form about design patterns in Java...
Servlets and JSP
http://webreference.com/xml/column1/ (a nice quick introduction with code samples, slightly biased towards client-side XML and XSL)
Java Examples in a Nutshell, 2nd Edition Ch19
Data Conversion and File I/O
Collections: List, Set, Map
Portability: Data and Character representation
Applets vs Applications
JTable - AbstractTableModel
Networking - Sockets
Protocol - HTML Packages/Extentions