The original work is: http://blog.9cbs.net/redvalley/archive/2004/12/18/220950.aspxhttp://www.javaalmanac.com - Java Developer Yearbook One book online version. To see quickly To a Java skill usage and sample code, this is a nice place. Http://www.onjava.com - O'Reilly's Java website. There is a new article every week. Http://java.sun. Com - Official Java Developer Website - New article is published every week. http://www.developer.com/java - Java Technical Article Website Maintained by Gamelan.com. http://www.java.net - Sun maintained a Java community website. Http://www.builder.com - CNET's Builder.com website - All technical articles, mainly in java. Http://www.ibm.com/developerWorks/java - IBM's DeveloperWorks technology website; this is the Java technology home page. Http://www.javaworld.com - the earliest Java site. Update the Java technical article per week. Http://www.devx.com/java - Devx Maintain a Java technical article website. Http://www.fawcette.com/javapro - JavaPro Online Magazine website. Http://www.sys-con.com/java - Java Developers Journal online magazine website. Http: / /www.javadesktop.org - a Java desktop technology community site in Java.Net. http://www.theserverside.com - This is a website discussed all Java server technology. http://www.jars.com - Provide Java review services. Includes a variety of Framework and applications. Http://www.jguru.com - A great Java technology resource community in the form of Q & A. http://www.javaranch.com - a forum, Get the place where the Java question answer, the beginners are good. Http://www.ibiblio.org/javafaq/javafaq.html - Comp.lang.java FAQ Site - Collects the Classification Directory from the questions and answers from the Comp.lang.java newsgroup. http://java.sun .com / DOCS / BOOKS / TUTORIAL / - Official Java Guide from Sun Company - It is very helpful for understanding almost all Java technical features. http://www.javablogs.com - the most active Java Blog website on the Internet. http://java.about.com/ - Java News and Technical Articles from About.com.