Starting with Rest controller, Service, Entity and JPA repository i did. But here interviewer went for too much. Wrote all code on paper. Then he started reading line by line and word to word whether syntax is correct or not. Thats too much. like forgot to add @requestbody annotation in params and didnt gave the URL name correctly and didnt gave the Employee entity properties as annotation of column. Too bad. Will never go to interview of Sabre. too much