Java

Where and for what is the abstract modifier used?

How can database indexing be effectively configured?

Junior — Middle

СБЕР

Is it possible to run a Java application with only a JRE?

What is a LinkedList?

What is the difference between a stack and a queue?

What is Spring Data Repository?

What format and tools did you use for task setting and tracking in your previous project?

Junior — Middle

Совкомбанк

What does the collect method do in Java?

What is the role of the garbage collector in memory management in automated systems?

Junior — Middle

Aston

What is the relationship between Map and Set collections in JavaScript?

How would you check for duplicates in an array of one million numbers?

Has the same URL been used to configure the Spring DataSource source?

Junior — Middle

СБЕР

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?

What is the difference between a nested class declared as static and an inner class without a modifier in Java?

Are you familiar with the REST maturity model (Richardson Maturity Model)?

Are you also ready for questions on this topic?

What are constraints in SQL?

Describe the main stages of interacting with a database using JDBC.

How is the dependency injection concept related to the inversion of control principle in programming?