If you are interested with free online courses on java technologies, http://www.javapassion.com/ could be a good platform for you. Shan Shin teaches the courses. Sang Shin is presently working for Sun Microsystems as a Technology architect, consultant, and evangelist. After a successful completion of any courses you are awarded with the Certificate from java passion. I suggest you all to register for at least one source at a time. Detail about the schedule and courses can be seen at the course home page. Currently he is offering the following courses and all are totally free.
- Java Programming (with Passion!)
- Performance, Debugging, Testing, Monitoring, and Management (with Passion!)
- Java EE Programming (with Passion!)
- Ajax Programming (with Passion!)
- Web Services Programming (with Passion!)
- Sun Java System Identity Manager (with Passion!)
- Java FX Programming (with Passion!)
- JRuby on Rails (with Passion!)
- Groovy and GRails (with Passion!)
- Java ME Mobility Programming (with Passion!)
