Icons Used in This Book

Like any For Dummies book, this book is chock-full of helpful icons that draw your attention to items of particular importance. You find the following icons throughout this book:

Pay special attention to this icon; it lets you know that some particularly useful tidbit is at hand.

Hold it — overly technical stuff is just around the corner. Obviously, because this is a programming book, almost every paragraph of the next 250 or so pages could get this icon. So I reserve it for those paragraphs that go into greater depth, such as explaining how something works under the covers — probably deeper than you really need to know to use a feature, but often enlightening.

You also sometimes find this icon when I want to illustrate a point with an example that uses some Java feature that hasn’t been covered so far in the book, but that is covered later. In those cases, the icon is just a reminder that you shouldn’t get bogged down in the details of the illustration, and instead focus on the larger point.

Danger, Will Robinson! This icon highlights information that may help you avert disaster.

Did I tell you about the memory course I took?

This handy icon refers you to some other place in the book where you find additional information on the presented subject.