Online seminars on Java

If you are a student, you can make free use of the official courses https://sailearningconnection.skillport.com/

up.
is koreai don't know? )

Still I can recommend OSUM (Open Source University Meetup) (http://osum.sun.com/) is a social network for students who are passionate about open source. As the founder is sun, and for java there is quite a lot. Periodically webinars, offline events, and so on. Though the Russian community is not very active.

the presentation of inappropriate frameworks in English: www.parleys.com/ (you need to download the client on Adobe Air)