Conventions Used in this tutorial

Italic is used for:

• Pathnames, filenames, and program names.
• New terms where they are defined.
• Internet addresses, such as domain names and URLs.

Boldface is used for:

• Particular keys on a computer keyboard.
• Names of user interface buttons and menus.

Constant Width is used for:

• Anything that appears literally in a Java program, including keywords, data types, constants, method names, variables, class names, and interface names.
• Command lines and options that should be typed verbatim on the screen.
• All Java code listings.
• HTML documents, tags, and attributes.
• Method parameters, and general placeholders that indicate that an item is replaced by some actual value in your own program.
• Variable expressions in command-line options.
• Java class synopses in the quick-reference section. This very narrow font allows us to fit a lot of information on the page without a lot of distracting line breaks.
• Highlighting class, method, field, and constructor names in the quick-reference section, which makes it easier to scan the class synopses.
• Method parameter names and comments in the quick-reference section.