It took full day, interview process was good, 3 F2F technical round, and 1 HR round, they are asking more about core Java concept, LinkedList, design patterns and SQL queries.

how to traverse data in linked list in forward and backward direction, write code and algo

how to delete node from linked list, write code and algo

how to install your project in your system

program for an array where keep all 0's at beginning positions and all 1's at last positions

why we use interface and abstract class

Design patterns

internal working of hash map

difference between equals and ==

overloading and overriding

Write database query to print emp name and their manager name from one single table