Visa Inc. Sr. Software Engineer interview questions

The total process took 2 weeks. Total 4 rounds happened and one with hiring manager. The interview responses were positive but hiring manager was a bit skeptical my current salary and role in my current org. This things were already discussed with HR prior begining the process, if that salary or designation is a blocker, they should not have proceeded with my candidature. That would save both our time.

Hacker rank test is there... easy.... questions from DP First round : Basic java questions.. Data structure... DP..... Second round : Asked very basic java questions I answered all questions properly.... finally he said .... you can leave for the day ... hr will come back to you. Then i asked which questions i told wrong ? Then he just told you are good but you have to explore more technology ..... If you guys know i am a java developer then why you asked to come for interview if you need some other technology expert ????? ..... I will suggest... if you have job in hand then don't go here to wast time.....