ElateXam is a complete toolsuite for electronic exams. It includes several task types (multiple choice, cloze texts, free texts, mapping, drawing, autotool), correction tools, analysis and export features. It's used at the university of Leipzig.
iText Programming Tutorials. Example code and detail explanation on how to generate Adobe PDF document with iText API. Example of AcroForm, bookmark, anchor, insert images, generate PDF with Java App, JSP or Servlet, create PDF table and etc.