I applied through a LinkedIn Jobs ad. After only one day, a recruiter from the company called me, and we went through the typical basic HR questions. I needed to speak in English.

After a couple of days, HR called me and organized a technical interview with a team in the company. She could not provide any further instructions.

The meeting was a Zoom meeting, and only one senior member was present. The interview was relatively easy, with basic core Java questions. I could answer almost all of them with relative ease. Then, I needed to solve a very simple coding task. I felt very confident during the interview, and the interviewer said that my coding task was also greatly solved.

At the end of the interview, he asked if I was interested in the position, and I said yes. Two days later, I received a standard email from Morgan Stanley stating that the company was not proceeding with my application. No further feedback was provided.

Why do we use interfaces and abstract classes, and what are their differences?

List implementations and differences between ArrayList and LinkedList. When do we use them, and why?

Type erasure in Java generics.

How many bytes does the int type occupy in memory?

Some other similar Java core questions.

Coding task: A very easy task with HashMaps.