Java

What methods can be used to protect your application from unwanted mass activity and spam attacks?

What is meant by the persistent state of an entity in Hibernate, and how does it affect its management in ORM?

Где в обработке исключений может быть использована конструкция с finally?

How do you guarantee message processing order in Kafka?

Senior

СБЕР

What is a Vector in Java?

What annotation is used in Spring to define environment profile handling?

How to ensure safe access to a singleton class in a multithreaded environment?

How to implement counting processed records when using multithreading?

Junior — Middle

СБЕР

What is the difference between @RequestMapping and @PutMapping annotations in Spring?

Should only one connection be established or can there be multiple?

Why is the clone() method declared in the Object class and not in the Cloneable interface?

Can you explain the concept of lock-free algorithms and how they differ from other synchronization methods?

How can application performance analysis be conducted to identify bottlenecks?

Junior — Middle

Совкомбанк

Is an inner class in Java private to access from other classes?

What is the feature of dependency injection?

Who was responsible for conducting the technical interview?

Junior — Middle

ВТБ

What do the expressions "is" and "has" imply in the context of object-oriented programming (OOP) principles?

What is the difference between a regular object and a JavaBean?

What does the For Each method return in a functional interface?

What is your development experience using the Spring framework?