Java

What areas of visibility of beans in Spring do you know?

What is the difference between JPA and Hibernate?

What is an Inversion of Control (IoC) container in Spring and how does it work?

What types of proxy servers do you know?

What is the difference between JPQL and HQL?

What is the difference between Supplier and Consumer in Java?

What is the PECS principle and how is it applied in Java?

What is a pseudo-class?

Have you heard about boxing and unboxing in Java?

What objects or data do we work with inside a Stream?

What are the differences between synchronized and ReentrantLock?

What is database denormalization?

How does the removal of elements from ArrayList occur and how does its size change in this case?

What are heterogeneous types?

What is the difference between 'competition' and 'parallelism' in the context of multithreading?

What do you know about memory models in Java?

What is the purpose of the PIVOT and UNPIVOT operators in Transact-SQL?

What is Dirty Read and what are its features?

What should be the size of the thread pool in Java?

What is the difference between the methods execute, executeQuery, and executeUpdate?