Site Offer J2EE has become required knowledge for any serious Java developer, however learning this large and often complex specification requires a substantial investment of your time and energy.

Sams Teach Yourself J2EE in 21 Days, presents the enterprise Java architecture in accessible, easy-to-comprehend lessons, describing how each J2EE tool solves the challenges of n-Tier development.

Using the architecture as a roadmap, chapters describe Enterprise JavaBeans (EJB), JavaServer Pages (JSP), Java Servlets, and more, giving readers a full understanding of J2EE development.

Further chapters cover the role of XML, custom JSP taps, creating J2EE Web Services, and how Java Connectors allow J2EE applications to interact with legacy and non-Java systems. This book is completely up-to-date, and every concept is illustrated with practical, real-world examples to ensure understanding by Java students and experts alike.

At The Register bookshop this week, you can save 30% off the RRP of £36.50 for Sams Teach Yourself J2EE in 21 Days - making the price for you a mere £25.55!

If you're not quite there with J2EE then why brush up on your Java skills with Sams Teach Yourself Java 2 in 21 Days, Professional Reference Edition, also reduced to £25.55 saving another £10.95.

Also available this week, all with 30% off:

• User Stories Applied - For Agile Software Development RRP £26.99 - Reg price - £18.89 - Saving £8.10 (30%)
  The concept of user stories has its roots as one of the main tenets of Extreme Programming. In simple terms, user stories represent an effective means of gathering requirements from the customer. This book describes user stories and demonstrates how they can be used to properly plan, manage, and test software development projects.
   
• Secure Architectures with OpenBSD
  RRP £26.99 - Reg price - £18.89 - Saving £8.10 (30%)
  The OpenBSD operating system is a secure, stable, and powerful operating system that is attracting many new and old UNIX users to it. This book offers a unique, insider perspective on building secure systems using OpenBSD--the world's most secure operating system.

• Understanding Digital Signal Processing
  RRP £63.99 - Reg price - £44.79 - Saving £19.20 (30%)
  
• Mobile IPv6
  RRP £34.99 - Reg price - £24.49 - Saving £10.50 (30%)
  
• Get More Out of Your PC and Add-Ons
  RRP £17.99 - Reg price - £12.59 - Saving £5.40 (30%)
  
• Make the Most of Your Windows PC
  RRP £17.99 - Reg price - £12.59 - Saving £5.40 (30%)
  
• Real World Adobe Acrobat 6
  RRP £33.99 - Reg price - £23.79 - Saving £10.20 (30%)
  
• cdma2000 System for Mobile Communications, The
  RRP £73.50 - Reg price - £51.45 - Saving £22.05 (30%)

This weeks alternative book bag:

• eBay in a Snap
  RRP £14.50 - Reg price - £10.15 - Saving £4.35 (30%)
  With over 7.5 million users eBay has become a fundamental part of contemporary life. eBay in a Snap reveals the best tips, tricks, and techniques for everything from enhancing a listing with HTML and multimedia to buying and selling a car on eBay.
• Digital Memories
  RRP £13.99 - Reg price - £9.79 - Saving £4.20 (30%)
  Scrapbook hobbyists learn to combine digital photography and the power of their computers with traditional scrapbooking techniques.
• Coach Yourself
  RRP £9.99 - Reg price - £6.99 - Saving £3.00 (30%)
  Imagine waking up tomorrow morning and your life being exactly how you want it to be. This book will help you help yourself to find where this is - and get there.
• We Can Take It!
  RRP £19.99 - Reg price - £13.99 - Saving £6.00 (30%)
  We Can Take It explores how the memory of the Second World War continues to affect British contemporary life and why the war effort holds an important place in British culture, history and national identity.

To browse or buy the other great discounted titles available to Reg readers, simply click on any of the links below:

• The Reg Bestsellers
• Last week at The Reg
• Great new releases
• This weeks book bag