1) James Cooper's Java Patterns Online Edition
2) Bill Venners's Flexible Java Online Edition
3) Bruce Eckel's Thinking in Java Online Edition
4) OOD Online Web Reference Guide
5) Patterns Home Page
6) Portland Patterns Repository Maintained by Ward Cunningham
7) Design Patterns Class Download the zipped Power Point presentations
8) Interesting Books for Software Developers
9) Tutorials on Networking
10) A pretty cool Design Pattern link