Java

What methods do you use to implement request handlers in your application?

Junior — Middle

СБЕР

What is the temporal complexity of obtaining the last element in a doubly linked list?

What happens if you prevent the removal of elements from a collection during its iteration?

What is a Vector in Java?

How did the team interact and discuss tasks during the work process?

At the application startup phase, what will be initialized first: XML configuration, Java code for configuration, or the @Configuration annotation?

What sorting and filtering methods of data with SQL are you familiar with?

Can you explain the principle of the Abstract Factory pattern and its structure?

Can a class containing only abstract methods and no implementations be replaced with an interface?

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

How can you select a specific Bean among several identical beans in Spring without using the @Qualifier annotation?

Could you explain what is meant by metadata?

What mechanisms ensure message order preservation in Kafka?

How is the sorting of elements implemented in TreeSet and how does it work?

When traversing elements, which list — ArrayList or LinkedList — shows better performance?

Junior — Middle

IT One

Could you explain what the transaction isolation level Read Committed means?

What types of resources and data can a browser cache to speed up page loading?

What is Test-Driven Development (TDD)?

Have you studied the work and approaches proposed by Evgeny Borisov in the context of the Spring framework?

What happens if you insert a record with a null key into a HashMap when such a record already exists?