Here is a listing of other sites that have been recommended to us.
- Java Lobby @ DZone A site dedicated to the politics and recent events in the Java world - with no influence from Sun and Oracle.
- ONJava An independent web site focused on enterprise Java development. Provides development tools, resources, and articles covering EJB, JSP, P2P, Java design, XML, wireless/consumer Java, multimedia Java development. (The site no longer gets updated.)
- Learn Java Features original articles, free Java source code, Java programming contests, chat, forums, tutorials, free mock exams for SCJP, SCJD, and SCWCD certifications, and tons of categorized links. (The site is currently stagnant, and looking for a new leader.)
- Scrum Methodology This site contains all sorts of resources for one of the current (2008) Agile methodologies.
- Artima.com - a Community of Object-Oriented Developers
- javapractices.com - Concise presentations of java programming practices, tasks, and conventions, amply illustrated with syntax highlighted code examples.
- ITtoolbox Java Content, community, and service for Java professionals. Provides technical discussion, job postings, an integrated directory, news, and much more.
- vogella.de - Tutorials around Android, Java, Eclipse, web development and other topics.