Impetus Technologies interview question

Introduction, Is Java Object Oriented, How to achieve it?, Wrapper Class, difference between arrayList and LinkedList, find second largest element in array, middle element in linked list,Excel sheet have column in name A to Z after that AA, AB..... convert it into Integer number, springboot vs spring, ioc container, what is bean, scope in bean, solid principle, order of execution in SQL, joins, random function in python and then random questions which were not technical.