Written questions had generic, multithreading, singleton pattern question and few java basic question. In aptitude test they had 4-5 questions on family relations, one for books positions in rack, few related to father-son age questions, one work time related and remaining natural numbers basic question.
basic core Java and data structure
Core java in deep
Array list implementation, linked list reverse, remove duplicates from unsorted array without using collections
Java, Multithreading, Hash map,Spring boot.
Tell me about exception handling
How to achieve async programming in Java?
They asked me about the N+1 problem in Hibernate. How to overcome it? What are the strategies?
Happens before mechanism in jvm
Java 8, collections and Database concepts.
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