Amdocs interview questions

This is my first interview but in my opinion this interview is good and average because this is my first interview experience and amdoc is a high profile company. Firstly I saw the office of amdoc I was nervous for interview and started thinking about the interview process because I saw the office of amdoc and I thought interview process is tough but my interview experience was good he was asking general questions about me. In my opinion it depends on the mood of the interviewer whether he selects you or not.

There were two rounds. Was asked two DSA questions in first round. Second round was about current projects and a few questions on java Collections framework. Difference between stack and queue. Why private method cannot be overriden and some more.