Here are the SCJP 6 study notes I mentioned I wrote. They are rough. I wrote them for my own purposes, so they are brief and highlight the main things I had to remind myself. It is by no means perfect - there are typos, poor layout choices, etc. Unless you're me, it probably doesn't make sense :-)
I apologise for the brevity. I tried to keep the page count to 12. Therefore, if you are printing, I personally recommend you print two pages per sheet of paper, meaning it'll take 6 pages and be quite readable.
Regardless, people have asked for them, so enjoy. If you find I am wrong, or that I could organise it better, let me know and I may try to maintain it.