Java

What is the purpose of using wrapper classes in programming?

Can you explain what the Java Development Kit (JDK) is?

What methods can be used to invoke a callback function in a Java Bean?

Why does the Map class in Java not implement the Iterable interface?

Explain the concept of the Runnable interface in Java and its purpose.

Junior — Middle

СБЕР БизнесAston

What are the advantages and disadvantages of using indexes in data storage systems?

Junior — Middle

СБЕР БизнесИннотехSecreate

Can you explain the principle of interface segregation from SOLID and its importance in software design?

In which cases is it recommended to use indexing to speed up query performance in a database?

Junior — Middle

Т-БанкАльфа-БанкСБЕР Бизнес+4

Do you have practical experience working with the Kafka messaging system?

Junior — Middle

ProoftechFirecodeСБЕР+8

How is a new element added to the HashMap data structure?

Can you describe the main types of operations available in Java's Stream API?

Junior — Middle

БАРС группEffective MobileСБЕР Бизнес+9

What is the difference between a static nested class and a non-static inner class in Java?

How is the insertion of an element into the middle of an ArrayList array determined in terms of time complexity?

Junior — Middle

IT OneСБЕР БизнесТетрасофт+4

Can you list the types of classes used in object-oriented programming?

What approaches and techniques of polymorphism are available in Java, and how are they implemented?

Does the hashCode method guarantee uniqueness for each object?

Is it possible to declare fields inside an interface in a programming language?

What are the advantages and disadvantages of using encapsulation in object-oriented programming?

What is the purpose of using the wait() method in the Object class in Java?

Junior — Middle

OZONСБЕР БизнесООО Антара+2

Can you explain what the Java Runtime Environment (JRE) is?