Java

What happens if you call two methods, both annotated with @Transactional, one after the other?

What data types exist in the context of JVM?

What happens inside a HashMap when adding an element if the hashCode method returns the same value for all objects?

What is the main idea behind the equals() and hashCode() methods in Java?

How to include a list in a DTO that cannot be modified after creation?

Junior — Middle

СБЕР

Have you encountered critical or emergency situations in your previous professional activity?

Junior — Middle

СБЕР Тех

What method is recommended for implementing dependency injection in a Bean to minimize risks and improve maintainability?

What are the advantages and disadvantages of using exceptions in interface design?

What does a Hash Join operation mean in terms of a query? Are there alternatives?

What types of anomalies that occur during transaction processing are impossible to encounter in a system that uses an isolation mechanism?

What condition prohibits inserting new elements into the array?

What types of objects are automatically cleaned up by memory during garbage collection?

Is it possible to ensure the same hashCode for different String objects and how does it affect collections?

How is the storage of lists implemented in a HashMap structure?

What components and mechanisms are used for monitoring and tracing within the Spring Framework?

Explain the concept of optimistic transaction implementation in database management systems.

Junior — Middle

СБЕР

What role does Hibernate Query Language play in working with databases?

What is the purpose of a unique key in databases?

What experience do you have in quickly implementing new components or changes in a project?

What is XSLT?