Java

What is jjs?

What do you know about static typing in Java?

What is the CAS (Compare-And-Swap) mechanism?

What is atomicity?

What are propagation levels in transactions?

What are 'green threads' and do they exist in Java?

How does the Spring Framework work 'under the hood'?

What is the difference between race condition and data race?

What is synchronization in the context of multithreading and why is it important?

What is a POJO class?

What is the N+1 problem in Hibernate and how can it be solved?

How is memory organized in JVM?

Will HashMap work if all added keys have the same hashCode()?

What is the CAS (Compare-And-Swap) mechanism?

What are design patterns used for?

What is caching used for?

How to develop a web application in Java?

What channels of synchronization would you use to organize interaction between multiple services?

What is asynchronous execution?

What is a JSON schema?