IBM

One aptitude test and one vocabulary and e-mailing test. Both were online tests. The aptitude test was for an hour, while the other was 20 minutes long. Whoever cleared these rounds would almost get into the company, unless they made some blunders.

The interview process was smooth. The interviewer was nice and kind. I was nervous at the start but became pretty comfortable by the end. They were patient enough to let me think of my answers and replied in the most constructive way. If they see t

Core Java & OOP What are the four pillars of Object-Oriented Programming? Can you explain each with examples? Difference between an abstract class and an interface? When do you use which one? What is polymorphism? Explain compile-time vs run-time