Opalina Technologies interview questions

There was first round of aptitude and reasoning, Then 2nd round was coding. both were easy. then 3rd round was interview that was technical and HR included, where company co-founder came and asked some few questions regarding myself and java and he gave me one big program to write it down in 30 min and after that he came and checked it it was good so, after 20min they informed me that, I got selected there.