Java

How much additional memory is allocated when calling the LinkedList.add() method?

What is the idea behind the JOIN operator in SQL?

From the SOLID principles, which is considered the most important and what is it used for?

Junior — Middle

IT One

How can you invoke the original method of an object after applying a proxy?

What is your experience in software development?

How do you prefer to complete tasks – independently or as part of a team?

Junior — Middle

МТС Банк

How to access overridden methods of a parent class in Java?

Have you used virtual tables in your SQL queries?

Junior — Middle

Aston

What is a 'temporary table' in databases and what is it used for?

What is ClassLoader in Java?

What are the purposes of functional interfaces like Consumer<T>, DoubleConsumer, IntConsumer, and LongConsumer?

What is the role of the Object class in Java?

What steps are necessary to ensure proper data transmission and reception through an interface?

What is a 'view' and what is it used for?

What are the uses of the IN, BETWEEN, and LIKE operators in SQL?

Which data structure provides maximum speed for the Command pattern, and what can it be replaced with?

Can you explain the concept of Livelock in the context of multithreading in Java?

Junior — Middle

Y_lab developmentIT One

Explain the differences between adapter, decorator, and proxy patterns, their purposes, and areas of application.

Junior — Middle

IT One

Do you use the Command pattern in your work?

What is the main idea of Stream API in Java?