How is serialization realized in Java? TODO: answer here What is hashCode and equals in Java? TODO: answer here How does garbage collection work in Java? Different memory allocations? TODO: answer here Follow up: Stack and Heap memory in Java? TODO: answer here What good/bad experiences have you made with Hibernate? TODO: answer here What's the difference between JPA and Hibernate? TODO: answer here How much experience do you have with Java Streams? TODO: answer here Kotlin Experience? What do you like about Kotlin vs Java? TODO: answer here What was the most complex multi-threading problem that you have ever worked on? TODO: answer here Please explain how Java Hibernate works. TODO: answer here