Cognizant GenC Developer interview questions

First there will be a online assessment exam after qualifying the exam we have to face two interview rounds that is technical round and hr round in those two technical round interview is quite difficult if we crack it we can easily attempt the hr round

It was nice 15-20 mins pure technical based interview. The interviewer first asked me to introduce myself and then we started the interview immediately, with quick rapid fire questions of OOPS and java fundamentals. It was basic fundamentals questions.