Sams Teach Yourself Java in 21 Days continues to be the most popular, best-selling Java tutorial 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.