The interview was a one-hour phone call.

Two individuals from the company participated: one led the interview, while the other mostly listened.

The entire conversation proceeded in a professional and friendly atmosphere.

First, there was an overview of the company, the department, and the job I applied for.

Then, I had to introduce myself, describing my previous roles and projects.

The final part consisted of scenario-based questions concerning Java and Linux.

Nothing was extraordinary, but preparation for diving deep into solution details is necessary.

Write a producer-consumer in Java using the low-level thread API.

Something about storing unique items in a map or collection. Which is better for the given scenario, and why? What are equals() and hashCode()?