Hash tables, hash maps, wrapper classes, maven lifecycle, maven execution using jenkins, threading & multi threading, synchronization, exception handling. In selenium he asked me - exception handling, framework structure, excel read write, abstract & static, interface, OOPS in selenium, switch between frames and windows, xpath, handling dynamic tables, get table size etc Lastly the interviewer tells me me, you are good in Selenium but you need to know more java. The interview JD had both Manual + Automation requirement.
