it is not too bad, but not given any feedback after the first interview. because I would learn about the main rejection reason. Why that almost answered all the questions

Overall I would say the interview process was quiet hard. First of all 3 tasks are given to solve in a pretty short time frame (I didn't manage to finish the third one, though I had the algorithm in my mind, the code writing took longer). The technical interview was mostly based on the "typical java interview questions" list, which was not so great, considering the fact that usually you are not using this knowledge in the daily basis.