This book is backed by Web sites providing auxiliary material:
http://www.ii.uib.no/~khalid/pgjc2e/
http://www.awprofessional.com/ (search for ISBN 0201728281)
The contents of the Web sites include the following:
source code for all the examples and programming exercises in the book
mock exam engine
errata
links to miscellaneous Java resources (certification, discussion groups, tools, etc.)
Information about the Java 2 SDK Standard Edition and its documentation can be found at the following Web site:
http://java.sun.com/j2se/
The current authoritative technical reference for the Java programming language, The Java Language Specification, Second Edition (also published by Addison-Wesley), can be found at this Web site:
http://java.sun.com/docs/books/jls/