Java

Where and for what is the abstract modifier used?

What is the Singleton design pattern with double-checked locking?

What parameters make up the quality and assessment of integration interactions?

Senior

СБЕР

What is the difference between projects created using Spring Boot and standard Spring Framework applications?

Junior — Middle

СБЕР

What is the purpose of the PushbackInputStream class in Java?

What is the difference between a stack and a queue?

What is the difference between finalize and finally in resource and exception handling?

What is Spring Data Repository?

What is the significance of using polymorphism in object-oriented programming?

Do you use tools for automatic code analysis in your current activity?

Junior — Middle

Aston

What types of relationships exist in a class diagram?

What is the difference between the classes PrintWriter and PrintStream?

What is the purpose of the HAVING operator in SQL?

How can you create and use functional interfaces in Java?

Junior — Middle

Aston

What are the differences between the methods compareAndSwap() and weakCompareAndSwap() from the java.util.concurrent.Atomic* package?

Have you used the jOOQ library in your projects?

Junior — Middle

Газпромбанк

Are you also ready for questions on this topic?

What data structure is used in ArrayList?

What does two types of exceptions mean in Java?

When should you use an abstract class and when an interface?