The HR screening about your experience and interview process was very friendly.

The video interview lasted for 1 hour. It was divided equally between technical questions about Java and abstract reasoning.

I was surprised that there were no questions about past experience or projects. The interview included in-depth questions about a few Java interfaces (Set, List, Map), and I was expected to know some method names and explain how they work.

In my 2 years of Java experience, I have never used some of these methods, and if I had, not enough to remember them. I'm not sure this is the best way to evaluate skills.

What happens when two threads try to modify an ArrayList?

How does memory allocation of an ArrayList work? What happens if you add an element to an ArrayList when its memory allocation is reached?