The recruitment team is highly mismanaged. On more than three occasions, I joined the MSTeams meeting, and no one joined to interview me.

Then, I was interviewed four days in a row.

Spring Boot: How to create a new project? How to use a web server other than the default Tomcat?

How do you create a REST API? (Some more questions)

Spring Security, OAuth - lots of deep dive questions.

Microservices: How would you go about designing a microservice? How do you authenticate them? What if a service is acting slow - how to identify and handle it?

How to perform caching?

Core Java: Use of streams in Java.

What happens if I try to access a variable (declared outside) inside a .forEach block? Is it possible? Yes/No - Why?

HashMap vs ConcurrentHashMap and its workings. How many threads can access a ConcurrentHashMap at a time?

Is it possible to modify an ArrayList while iterating it? Is there a way to do it?

Some coding questions on overriding and exception handling concepts.