Important Site for Java Developer

http://www.javaalmanac.com/ - The online counterpart of the Java Developer's Almanac - highly recommended for quick code snippets, and if you like the site, buy the book.

http://www.onjava.com/ - O'Reilly's Java website. New articles weekly.

http://java.sun.com/ - The official Java developer website - new articles posted weekly.

http://www.developer.com/java - Java articles hosted by Gamelan.com

http://www.java.net/ - The Java community website hosted by Sun Microsystems.

http://www.builder.com/ - Cnet's Builder.com website - All tech articles, some Java-centric.

http://www.ibm.com/developerworks/java - IBM's Developerworks; the Java section.

http://www.javaworld.com/ - One of the originals. Weekly updates of Java articles.

http://www.devx.com/java - Java articles hosted at DevX.

http://www.fawcette.com/javapro - The JavaPro online magazine website.

http://www.sys-con.com/java - The Java Developers Journal online magazine website.

http://www.javadesktop.org/ - The desktop Java community hosted at Java.net.

http://www.theserverside.com/ - Often considered the resource for all discussion server-side Java specific.

http://www.jars.com/ - The Java review service. Covers frameworks and applications.

http://www.jguru.com/ - A great source for Q&A style interaction in the community.

http://www.javaranch.com/

http://www.ibiblio.org/javafaq/javafaq.html - The comp.lang.java FAQ - questions asked, answered, and categorized from the comp.lang.java newsgroup.

http://java.sun.com/docs/books/tutorial/ - The Official Java tutorial from Sun - very useful for almost any feature set.

http://www.javablogs.com/ - Blog aggregator for the most active Java-based blogs throughout the internet.

http://java.about.com/ - Java news and articles from About.com.

http://www.java2s.com/ - Java Example

http://www.roseindia.net/ - Java Example with explanation , Also provide tutorial for Frameworks : Hibernate, Struts, Spring etc.

http://www.servletworld.com/ - Java servlet tutorial, Jsp tutorial , Servlet example and J2ee Tutorial.

http://www.visionsdeveloper.com - Tutorial for Java, Struts2, Hibernate, Spring, Javascript, Ajax, Html etc, and All Blog.