They asked which language i know i told java and mysql basics, and they asked fully OOPs concepts 4 types and inheritance types and about interfaces and overriding and overloading and different between final,finally,finalise keywords and about super keyword and they asked about threading and multi threading and i told basics and i told i don't know much about this topic and they moved on and they asked me to explain the code which i solved and asked some more question to code and finally they asked about my projects.