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.
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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:
In code examples we highlight new and important code with a gray background.
The gray highlighting is not used for code that’s less important in the present context, or has been shown before.