Java

What design patterns are implemented in the Spring Framework?

How were attachments (files, photos, videos) stored in applications?

What are the disadvantages of using design patterns?

What actions will you take to implement the report deletion feature from the system?

What types of Statements exist in JDBC?

How is the insertion operation's time complexity evaluated in a TreeMap data structure?

Junior — Middle

OZONТ-БанкТетрасофт

How to implement the Singleton pattern using Spring Framework capabilities?

Is it possible to verify a JWT only by its signature without additional checks?

What is the order of elements stored in a LinkedHashMap?

Could you share examples of mistakes or problems that arose in your last project?

Junior — Middle

СБЕР

Which classes in Java support reading and writing streams in compressed format?

What are the advantages and disadvantages of using indexes for individual columns in a database?

Junior — Middle

Т-Банк

What is WebSocket?

How does increasing the number of selected columns in the SELECT * operator affect query execution speed?

Junior — Middle

МВидео

What are the main changes and innovations introduced in Spring Boot starting from version 2.x?

How to handle exceptions thrown by another servlet in an application?

Is it possible to model simple data types as objects in object-oriented programming?

How can JSP functionality be extended?

How is the data area implemented inside the Java Virtual Machine?

What is the difference between unit tests and integration tests?