Java

What is the difference between LEFT JOIN and INNER JOIN?

If two objects belong to different classes but have the same field values, will they produce the same hash code result?

What are the security disadvantages of a string pool?

What is the purpose of the PushbackInputStream class in Java?

Have you configured garbage collector parameters in your system?

What is Spring Boot used for?

Is it mandatory to specify the alt attribute in the <img> tag?

What is a list (List) in Java?

What is sharding in the context of databases?

List the main aggregate functions.

Is it possible to implement an interface through another interface?

What methods can be used to view the list of previous changes in the code version?

How can you create and use functional interfaces in Java?

Junior — Middle

Aston

Can you name the main components that make up the structure of an HTTP request?

What technical areas should be mastered for professional growth?

What is the advantage of the Builder design pattern compared to a regular constructor?

How can a stream of elements be converted into a collection list?

Junior — Middle

Северсталь-Ифоком

Is it mandatory to include a finally block when using a catch block in exception handling?

Junior — Middle

СБЕР

Which configuration has priority: XML, Java, or annotations?

Can you explain what anonymous classes are and how they are used in programming?