» Java.sun.com
Sun's home for Java. Offers Windows, Solaris, and Linux Java Development Kits (JDKs), extensions, news, tutorials, and product information.
http://java.sun.com/
» The Apache Jakarta Project
Offers a set of open source Java solutions under an open software license. Jakarta is organized into subprojects.
http://jakarta.apache.org/
» Wikipedia: Java
Presents the language and gives insight into its philosophy and syntax. Lists criticism, resources, links and literature on the topic.
http://en.wikipedia.org/wiki/Java_(programming_language)