Commvault Java Software Engineer interview questions

2 Telephonic Interviews. Onsite Interview after a test. Onsite interview has a code test 3-4 interviews. The first onsite-interviewer was extremely rude. He was cutting me short, smiling when I answered wrong, was telling me I was wrong before I could finish writing some code. He left before his time was over. I had a feeling he was not interested in recruiting me, right from the beginning. Most of the interviewers were asking Threading questions, which I initially claimed I had no experience in.