Disclaimer:
These pages about different languages / apis / best practices were mostly jotted down quckily and rarely corrected afterwards.
The languages / apis / best practices may have changed over time (e.g. the facebook api being a prime example), so what was documented as a good way to do something at the time might be outdated when you read it (some pages here are over 15 years old).
Just as a reminder.

Java notes

jBPM (separate page)

jBoss (separate page)

xdoclet (separate page)

Setup

 To get a decent environment setup quickly:
 
 http://lomboz.objectweb.org/downloads/drops/R-3.1.2-200602261400/instructions.html
 
 http://roseindia.net/ejb/ejbtutorial/building_a_simple_ejb_application.shtml
 
 

More programming related pages

Workflow: Release process
Workflow: Bug tracking
Teambox (Redbooth) - Mantis connector
Design Patterns
Git & Github
Go / Golang
CVS
CVS backup script
Distribution process
Installation script
Java Server Faces
Facelets
jibx
jBoss
jBpm
Perl tips
Perl links
PostgreSQL
Python / py2app
Shell scripts
Xslt
Node.js
Facebook / Opengraph
PHP developer notes
Redbooth API through php
Website optimization
jqTableKit demo
Javascript / html / css links