
xxvii
Introduction
Boxes like this one hold important, not-to-be forgotten information that is
directly relevant to the surrounding text.
Notes, tips, hints, tricks, and asides to the current discussion are offset and placed in italics like this.
As for styles in the text:
❑ We highlight new terms and important words when we introduce them.
❑ We show keyboard strokes like this: Ctrl+A.
❑ We show filenames, URLs, and code within the text like so: persistence.properties.
❑ We present code in two different ways:
We use a monofont type with no highlighting for most code examples.
We use gray highlighting to emphasize code that’s particularly important in the
present context.
Errata
We make every effort to ensure that there are no errors in the text or in the code. However, no one is
perfect, and mistakes do occur. If you find an error in one of our books, like a spelling mistake or faulty
piece of code, we would be very grateful for your feedback. By sending in errata you may save another
reader hours of frustration and at the same time you will be helping us provide even higher quality
information.
To find the errata page for this book, go to
http://www.wrox.com and locate the title using the Search
box or one of the title lists. Then, on the book details page, click the Book Errata link. On this page you
can view all errata that has been submitted for this book and posted by Wrox editors. ...