Java

What are the main difficulties that can be encountered when working with databases?

Junior — Middle

Aston

What are the advantages and disadvantages of using JAR files in Java projects?

Have you created automation tools to simplify developers' work?

Junior — Middle

СБЕР

What is the base class inheritance used for implementing exceptions in programming languages?

What is the synchronized block in Java and what problems can arise when using it?

What is the simplest method to implement a data caching mechanism?

Implementations - Logic of connecting users and producers - Message keys can be duplicated - Error in aligning consumer offsets with messages - No mood for producer - No execution for multiple brokers - Consumer group is hardcoded

In what situations is it recommended to use the try-with-resources construct in Java?

What is the difference in behavior of the contains() method when using lists and sets?

Where is the Circuit Breaker attached and what happens when calling a method with TimeLimiter and fallback?

How can the functionality of JSP be extended?

Can you explain the purpose and the working of the constructor in Java?

What is the role of declaring a class with the final modifier in Java?

Can you list the main interfaces used for object serialization in Java?

What elements of functional programming were introduced in Java 8?

How does the UNION operator work and how does it combine query results?

Junior — Middle

СБЕР

What happens to a method annotated with @PreDestroy if it belongs to a prototype bean in Spring?

How often do you encounter objections, and how do you usually resolve them?

What is the main role of the Spring Core module in the Spring ecosystem?

How is the conversion of collections into a data stream implemented in the Stream API?