Sams Teach Yourself Java in 21 Days continues to be one of the most popular, best-selling Java tutorials on the market. The Professional Reference Edition of the book includes an extra seven chapters, as well as a 200-page reference section.

Sams Teach Yourself Java in 21 Days continues to be one of the most popular, best-selling Java tutorials on the market. It has been acclaimed for its clear and personable writing, for its extensive use of examples, and for its logical and complete organization. The Professional Reference Edition of the book includes an extra seven chapters covering advanced topics like object serialization, remote method invocation, accessibility, security, JavaBeans, JDBC, and advanced data structures – as well as a 200-page reference section detailing the most commonly used aspects of the Java language. This edition of the book has been updated and revised to cover version 1.3 of the Java 2 Standard Edition SDK, and the book's CD-ROM includes a fully functional Java compiler, as well as the book¿s source code and a collection of third-party Java development tools and utilities.