最好免费的Training 和Tutorials资源:
Java Programming Resources
19 Free Java Courses from IBM
IntrodUCtion to Programming Using Java -Full TOC -PDF version
Studying for Java Certification on the Web
Thinking In Java, by Bruce Eckel, 2nd Edition
Richard Baldwin's Java Tutorials, plus javascript and XML
Jyothi Krishnan Java Certification Study Site
Java Certification & Training by Michael Thomas
Sun Certified Java Programmer (Java 2) Study Guide) (register here)
Another Java 2 Programmer Study Guide
Further Java, University of Cambridge
The Java Boutique: The Ultimate Java Applet Resource: Articles: Tutorials
The Developer's Guide to Understanding Enterprise JavaBeans Applications (pdf)
Mastering_Enterprise_JavaBeans and the Java 2 Platform (zipped pdf)
Java Bean Tutorial from Sun
A Walking Tour of JavaBeans
Advanced JavaBeans
Java Servlet Articles from Webreview.com
Java Servlet Tutorial from Webmonkey
Servlet and jsp Tutorial
Servlet Essentials from Novocode
Java Tutorials from JSPInsider.com
Introduction to JSP Tutorial
The Advanced Java/J2EE Tutorial
Sun JFC Swing Tutorial
Java Lecture Notes
Java Programming Course at Gamelan.com
Java Technology Zone at IBM DeveloperWorks
100% Pure Java (portability) -100 Percent Pure Java Cookbook JavaPureCheck
Java Book Series from Sun
Sun Certified Programmer Examination Revision Book
Web Developer Java Tutorials
Many Java Resources at Cetus-Links
Sun's Java Certification Page
免费的Java电子书籍和技术文章:
http://java.sun.com/docs/books/jls/second_edition/Html/j.title.doc.html
Java语言规范 - 第二版 - This book attempts a complete specification of the syntax and semantics of the language. We intend that the behavior of every language construct is specified here, so that all implementations will accept the same programs.
http://www.artima.com/objectsandjava/webuscript/index.html
对象与Java:使用Java来构建面向对象的，多线称的应用程序 - by Bill Venners - this free book is a work-in-progress.
http://books.iuniverse.com/viewbooks.ASP?isbn=15834821801&page=1