Oracle Developer interview questions

Oracle came to our college for campus recruitment. First round :This was the online assessment. It includes questions like 10 CN,OOPS,OS and 2 coding questions(easy to medium) and 10 aptitude questions. Second round: It was face to face interview , He asked questions about my project , what is synchronization in java, what is Association and aggregation , sorting algorithm and 1 sql query. Third Round: He asked me about my project , gave one question on strings , I explained my solution with pseudo code. He was satisfied and asked questions on oops and exception handling. I answered all questions and expected the offer.But unfortunately , I didnt .(Luck matters)

4 Interview Rounds - 3 technical 1 behavioral. The process was smooth. Entire process took around a month. Questions asked on C, C++ and multi threading which involves Code snippets and easy to medium coding challenges. Behavioral included a problem solving of a existing issue faced in the team.