This was 2nd Technical round(final round) . He asked me about my experience and technical skills. 1.Concurrenthashmap and hashtable 2.Internal working of concurrenthashmap 3.Comparable and Comparator Diff 4.IOC Container and it's types 5.Preset and sorted set Diff 6.Have you worked on hibernate? 7.How you are connecting applications to the database? It seems like he was in a hurry. Even though I gave all answers . He said that you need to work more on collections and left the meeting.