Conventions

To help you get the most from the text and keep track of what's happening, we've used a number of conventions throughout the book.

Important

Boxes like this one hold important, not-to-be forgotten information that is directly relevant to the surrounding text.

Note

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 important words when we introduce them.

• We show keyboard strokes like this: Ctrl+A.

• We show file names , URLs, and code within the text like so: persistence.properties .

• We present code in two different ways.

    The Code Foreground style shows new, important, pertinent code. We indent   the 2nd line to show you should enter both lines as one line.  The Code Background style shows code that's less important in the present                               context, or has been shown before. 

  Note

  Occasionally, code that needs to be placed all on one line is split over two because of the layout of the book, as shown in the preceding highlighted code. However, make sure you type it all on one line.