Domande di colloquio per Software Engineer - Java Developer presso FIS

It is a 2 step Interview process 1st round is technical 2nd round is Hr Technical interview basically consists of all java related questions such as oops concepts,multithreading,this, super keywords

I was approached by the recruiter from Naukari stating there will be only 1 round of Technical + Managerial. Later on, it turned out to be 4 Rounds. I cleared all the rounds they collected my details and payslip but for some reason, they didn't release the offer letter. I hate that organisation tbh: 1) Technical Interview 2) Online test which consisted of Java and Spring related questions mostly figure out the output. 3) Managerial -> Tell me about yourself and etc etc.. 4) HR and negotiation