Java

Can you give examples of relationship types between tables in an SQL database?

Do you use the equals method for comparing objects when adding them to a bucket-based data structure?

Junior — Middle

СБЕР

Have you had experience working with reactive libraries and technologies in your projects?

What is the purpose of the sorted() method in streams?

What level of appropriateness is there in using JDBC for a service that only performs create, read, update, and delete operations?

What restrictions does using a primary key impose in a database?

How does the order of columns in the composite index definition affect its efficiency and usage?

Junior — Middle

Aston

What design patterns do you use in your practice?

Have you had experience setting up and implementing continuous integration and delivery (CI/CD) processes?

Is it possible to accidentally delete or lose a reference to an object stored in a HashMap?

What is the main content and structure of a cluster index in a database?

Junior — Middle

Aston

What additional knowledge and skills in programming and development have you acquired beyond standard Java Core?

How is the service configured and launched within the Spring Framework?

What are anonymous classes and where are they used?

Can you catch multiple error types in a single exception handling block?

What is the role and purpose of traceId fields in system logs?

Junior — Middle

Альфа-Банк

How is the insertion operation's time complexity in HashMap determined?

Junior — Middle

Яндекс

How do Java Persistence API (JPA) and Hibernate interact during database operations?

What are the advantages and disadvantages of using objects in programming?

What is the expected time complexity when adding a new element at the beginning of a dynamic array ArrayList?

Junior — Middle

СБЕР