Your main tutorial on Java from Sun available at
http://java.sun.com/docs/books/tutorial/

* I think it is very good, it uses simple language to introduce complex subject areas such as threading

Sun also has a 1500 page, 16MB tutorial in Pdf format on JavaTwoEnterpriseEdition. Access via  http://java.sun.com/j2ee/1.4/docs/tutorial/doc/index.html



''Introduction to Programming Using Java''
by David J. Eck
GNU Free Documentation License
This on-line book contains Java applets.
http://www.faqs.org/docs/javap/

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