Core Java- OOPS concept in details with example, collection vs collections, array vs array list internal working , HashSet vs HashMap difference and internal working, linked list vs array list which one is preferred ? what if array list size is full how new element is added to list.
Spring- what is auto wired? dependency injection? types of DI, difference between construction injection and setter injection. singleton and prototype difference. Rest api call,
spring mvc architecture, @Qualifer uses. @Controller, etc different types of annotation used in spring MVC architecture. Last question was how to load huge data from Rest api to the DB if its loaded in DB at a time then the database will crash immediately in such case how you will handle the situation. They kept you waiting for 5 hours for an interview even if there is very few people. They only hire if you go through referral drive.

Question

Core Java- OOPS concept in details with example, collection vs collections, array vs array list internal working , HashSet vs HashMap difference and internal working, linked list vs array list which one is preferred ? what if array list size is full how new element is added to list. 
Spring- what is auto wired? dependency injection? types of DI, difference between construction injection and setter injection. singleton and prototype difference. Rest api call,
spring mvc architecture,  @Qualifer  uses. @Controller, etc different types of annotation used in spring MVC architecture. Last question was how to load huge data from Rest api to the DB if its loaded in DB at a time then the database will crash immediately in such case how you will handle the situation. They kept you waiting for 5 hours for an interview even if there is very few people. They only hire if you go through referral drive.

Anoniem · Accepted Answer

Answered all these question clearly and properly, but they didn't selected me even after answering all these question,At the end I received feedback,HR told me you have less project experience , I just smiled and told her its ok will update my feedback on glassdoor  so that everyone will aware of that. only one guy us selected which came through referral who was talking to few of the mu sigma colleagues, wasted my 6-7 hours of time as their process was too slow only 2 interview panel was there for taking the interview process. worst experience faced. Go only if you go through referral otherwise don't waste your time.

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