Java

How can you extract the resource identifier from a URL inside a controller method?

How do you approach organizing testing to reduce the number of errors in a project?

What is the difference between map and flatMap methods in Java Stream API and what are their usage features?

Junior — Middle

IT OneТ-Банк

What are replication, partitioning, sharding — what are they?

How does a Servlet work in a multithreaded environment?

What happens if you try to add a key-value pair to a HashMap where the value is null, and such a pair already exists with a fixed hashCode and equals returning true?

What is the worst-case scenario of using HashMap?

Is it possible to run a Spring Boot project without configuring the application.properties file?

Junior — Middle

СБЕР

What is an Appender in log4j?

What is reactive programming?

Which entity in Java collections allows access to objects?

What is the difference between SOAP and REST?

Are values processed together with their keys for storage in memory cells?

Is it possible to use objects whose values can change as keys in a hash table?

Have you used data stream APIs in your projects?

What are the ways to prevent LazyInitializationException in Hibernate?

Middle — Middle+

Газпромбанк

How can the correct operation of competing objects of a class be ensured during parallel execution?

Middle — Senior

Aston

What is your experience with the TreeMap data structure in projects?

What is UML? What are 'diagram', 'notation', and 'metamodel' in UML?

Where is the index usually located within a data structure or database?

Junior — Middle

Aston