Learning post for "Java"

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machine learning/data mining, WEKA now Java later

I have started the course at https://weka.waikato.ac.nz/dataminingwithweka but haven't found anyone actively discussing it. Ultimately I want to move to Java, but figured I'd do this course first. Would...

Background I was a Java developer years ago and am jumping back in. I recently became interested in Data Science, and am a newbie to that.

I am starting learning java from scratch?

Goal: Learn java as fast as i can.
Plan: Online sites, eclipse, notepad, pen, paper and a cup of coffee.
Anyone to join and discuss daily on topics and code?

Background C.S.E Graduate