This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
If this helps, try using Japser reports. They give you the PDF reports , once you specify the content type for pdf in your Struts action class. You might have to spend some time learning Jasper reports API if you are a beginner, though its fairly straight forward. Try iReport , open source library.