Vizrt Software Engineer interview questions

I submitted my resume online. Got call after couple of weeks for the interview. The post was for J2EE Developer. On the 1st day they interviewed me for around 3/3.5 hours. The interview was mostly technical. At first I had to explain my previous projects using a whiteboard (had to draw lots of diagrams and make them understand what i did). It took around 1 hour. Then they started interviewing me about technical stuffs. The areas they were interested are algorithms, math, java, web technologies etc. After the 1st interview was done They called me after around 2/3 more weeks for the second interview. It also covered some technical questions but mostly it was about negotiation.