Java Online tutorials

Free Java Online Courses (Core,J2EE etc) with slides and audio files

http://www.javapassion.com/


Sun Java Tutorials

https://java.sun.com/docs/books/tutorial/

http://java.sun.com/developer/onlineTraining/


some more links:

http://home.cogeco.ca/~ve3ll/jatutor0.htm
http://math.hws.edu/javanotes/contents.html
http://www.techiesoft.net/ebookjavacore.html

..