Introduced by javalobby.org
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.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.