What tools or libraries for multithreading have you used in your projects?
Junior — Middle
228
Java
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265
What happens if you insert a record with a null key into a HashMap?
Junior — Middle
228
Was your last project implemented as a monolithic application?
Junior — Middle
227
What are the main tasks and responsibilities a business analyst should have in their professional activity?
Junior — Middle
226
Do you have experience working with the concept of distributed computing?
Junior — Middle
225
How do you implement working with JPA in your projects?
Junior — Middle
225
For what reasons does the HashMap data structure not allow the use of null as a key?
Junior — Middle
222
Can you explain what is meant by mutation testing method?
Junior — Middle
221
Can you explain the differences between Mock and Spy in Mockito and when to use them?
219
Explain how and why requests can be processed in one or multiple threads in a web application controller
Junior — Middle
219
Why is it recommended to avoid using stored procedures in databases?
Junior — Middle
218
In which case is it appropriate to use the HAVING operator in SQL queries?
Junior — Middle
218
What happens if multiple Consumers are run on one partition, and why can this be problematic?
Junior — Middle
218
Is it possible to form SQL queries working with objects and their relations instead of directly accessing tables?
Junior — Middle
217
Where are string data usually stored in a system?
Junior — Middle
216
What limitations exist in the PostgreSQL database management system?
Junior — Middle
216
How to ensure reliable and error-free retrieval of related data in ORM or other methods?
Junior — Middle
215
Were data requests in your last project processed synchronously?
Junior — Middle
215
What methods can ensure reliable and error-free access to related data in object-oriented systems?
Junior — Middle
214
Have you ever upgraded a project from Java 8 to Java 11, and what were the features of this process?
Junior — Middle
213