Java

Can you list the main types of relationships used in SQL relational databases?

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?

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?

Have you used window functions for data processing in your projects?

Junior — Middle

Aston

How can you specify a specific version of a transitive dependency in a Gradle configuration file?

What is capacity in the context of Java?

What is the purpose of denormalization in a database?

What does the Scan component do in the context of Java?

What build automation tool would you use when developing a new microservice?

Junior — Middle

Aston