Java

Is it possible to use null as a key in a TreeMap data structure?

Can you explain the stages and management of the lifecycle of a Spring Bean object?

Is JavaScript an interpreted or compiled language, and how does this affect its execution?

How can you select a specific Bean among several identical beans in Spring without using the @Qualifier annotation?

In which cases is the @Repository annotation used when implementing inheritance in Spring?

Could you list and describe the different scopes used for beans in Spring?

Junior — Middle

StrokiRight LineAston+7

How are the equals and hashCode methods related in Java, and why is it important to implement them correctly together?

Junior — Middle

Альфа-БанкВи6 СервисесМВидео+11

How is storing multiple null-key elements implemented in hash collections?

Is it permissible to store null values in hash tables or similar collections?

What is your experience in developing and using multithreaded solutions in your projects?

Junior — Middle

СовкомбанкМТС БанкRight Line+3

Can you describe the process of transforming Java code into commands understood by the operating system?

Is it mandatory to apply the @Repository annotation in every case when working with repositories?

How to select and implement two separate Bean instances of the same type in a Spring application?

What is the difference between @Repository and @Service annotations in the context of Spring?

Can an increment operation on a variable be executed as an indivisible action in a multithreaded environment?

What is the purpose of the repeatable-read isolation level in database transactions?

Why is the read-committed isolation level used in database management systems?

Explain the concept of 'happens before' in the context of modeling event sequences in multithreaded programming.

Middle — Senior

ОТП БанкRight LineСмарттек+2

How can you declare multiple components of the same type in Spring Container?

Can you list and explain the main annotations related to bean management in Spring?