"Learn Java on the Macintosh" is a book that aims to teach beginners how to program in Java on a Mac computer. It provides a step-by-step guide with clear explanations, diagrams, and exercises. The book includes information on setting up the CodeWarrior Java environment and covers essential programming concepts like classes, objects, and variables. The accompanying CD-ROM contains the necessary files for hands-on practice. Readers will also learn about creating Java applets for the web and using object-oriented features. Overall, this resource offers a straightforward approach to learning Java, even for those with no prior programming experience.