Java

Where are static methods stored in JVM memory?

How did you perform data migration and database update in your last project?

Junior — Middle

СБЕР

Were transactional message processing mechanisms implemented in your project?

Have you used API Gateway in your previous project?

Junior — Middle

Aston

How can elements in a HashSet be ordered?

Is it possible to specify the scope of Request for beans in your framework or system?

Junior — Middle

Газпромбанк

In what cases is the finalize() method used in Java?

Can you name popular relational database management systems?

Junior — Middle

СБЕР

When exactly does class initialization occur during application startup?

Junior — Middle

СБЕР

How is the index structure implemented in ArrayList?

What are the differences between services marked with the @Transactional annotation and regular services in terms of transaction management?

Junior — Middle

СБЕР

What specific version of Spring Boot did you use in your main production project?

Can you explain the differences between standard JDBC and using JdbcTemplate when working with databases?

How can data pagination be implemented?

Junior — Middle

СБЕР

Can you explain the differences between components and dependencies of objects in object-oriented programming?

Why is the data type int, representing a 32-bit number, unable to store a value exceeding approximately 2 billion?

What is the idea of polymorphism in programming?

Have you implemented an error handler that catches exceptions and notifies the user of the problem?

Junior — Middle

СБЕР

Should the method throw a checked or unchecked exception in case of an error?

Junior — Middle

ОТП Банк

What methods can be used to improve the efficiency of work and the response speed of a database?

Junior — Middle

Aston