Java

What type of questions do you most enjoy asking in interviews?

What resources and how much time are required to create and launch a new thread of execution?

Junior — Middle

Альфа-Банк

Can you explain the internal structure of HashMap implementation?

How can a new thread of execution be started in a program?

Junior — Middle

ОТП БанкСБЕР

Is adding an element to an ArrayList always O(1) in complexity?

What is the time complexity of inserting an element into a HashMap in the worst-case scenario?

Explain how to configure a Bean using XML configuration in Spring.

What to do if a nested transaction ends with an error, and the outer transaction is suspended at this time?

Junior — Middle

Aston

What level of transaction isolation do you use in PostgreSQL to ensure data integrity?

Explain the mechanism of automatic primitive type to wrapper object conversion in Java.

What tasks can be implemented using aspects in Spring AOP?

Junior — Middle

Альфа-Банк

How does AtomicInteger behave when increasing the counter in a highly parallel multithreaded environment?

Junior — Middle

СБЕР Корпус

Tell about your practical experience in solving technical problems.

Can you list the main levels of logging used in systems?

How do you evaluate your condition after passing an interview?

How does Kubernetes determine which Pods to connect to when making requests to a service?

What benefits can be gained by using Docker for delivering JAR files?

How can you initiate work with a lazy instance of an object?

Junior — Middle

СБЕР Тех

Share your experience of implementing the Pipeline pattern in projects.

Have you worked with indexes created under specific conditions in a database?