This book follows certain conventions for font usage. Understanding these conventions up-front makes it easier to use this book.
Italic
Used for filenames, file extensions, URLs, application names, emphasis, and new terms when they are first introduced.
Constant width
Used for Java class names, methods, variables, properties, data types, database elements, and snippets of code that appear in text.
Constant width bold
Used for commands you enter at the command line and to highlight new code inserted in a running example.
Constant width italic
Used to annotate output.