AppDynamics Software Developer interview questions

New grad interview for the software engineer position. A recruiter reached out to me via email and we scheduled two phone interviews. Then I was taken to San Francisco to interview onsite where I had 5 interviewers. AppDynamics paid for my flights and hotel. Everyone I met was friendly and easy to talk to. Very positive experience.

Standard Process. HR contacted me through LinkedIn and setup a Phone screen. After discussing about the work opportunities and requirements, I had a telephone screening round. After clearing the telephonic round, was invited for a full day onsite interviews. They had coding round, system design, object-oriented design, lunch with the director and multi threading with Java rounds. Everything went well except the last round. I was hoping I would clear it as I had learnt in my initial discussions that they are not very language specific and they were looking for someone who knows their stuff well. Was really disappointed after knowing that I didn't clear the interview and even in the feedback when recruiter mentioned that everything was positive except for the last round(concepts in Java). The recruiter was nice and very responsive throughout the whole process. I didn't like their office location and work spaces though. Most of them(like 60-70%) were sitting in some dark areas which didn't have light ventilation.