It's was a simple hr interview with very few questions and then basic Java or the language you are comfortable. Just be clear with your basic Java concepts and all.
I applied through university. The process took 1 week. I interviewed at Cognizant (Chennai) in Nov 2020
Interview
Aptitude(basic aptitude questions on probability,time, work, speed) +technical(based on normal java concepts;DRY & Abstraction,Encapsulation,Delegation,Program to an interface, not an implementation,Single Responsibility Principle,Open Closed Principle,Interface Segregation Principle)-Going through these concepts will be really helpful during interview.And then at last is HR round.
Interview questions [1]
Question 1
SQL queries, dbms operations, datastructure basics and project related concepts.
Includes three steps in the process. Online test by amcat , technical interview and HR round. Online test included quantitative aptitude and logical reasoning questions. It was of average level. I was preparing for bank exams so it was easy for me. Interview depends on luck I believe because there were plenty of panels.