PayPal Software QA Engineer - III interview questions

I got a call through ebay-Paypal recruitment team, the interview was scheduled immediately after my confirmation. They called me for in person interview. I had few rounds via video conferencing and it was about my work , skill set. The interviewers were not very polite or humble by any means they were looking to show there knowledge rather than understanding what I was trying to explain them. While checking my java skills and coding they asked me few definitions from collection framework and where did I use them, I answered them with examples from my current work. I was not selected and the feedback given shocking that I am not good in coding and java, I still dont understand how did they concluded this from my interview where I was not asked to write a java code or any logical programming problem. The worst interview I have ever faced in my 6 years of career in terms of interviewer's attitude and there knowledge. I hope they have good people in other teams.