How do you organize exception handling in a Spring application: where do you catch exceptions, and when do you use checked versus unchecked exceptions?

How to approach it

This checks whether the candidate understands the difference between checked and unchecked exceptions and can choose between them deliberately. The second thing it looks at is whether they can build a coherent error-handling architecture in Spring: a domain hierarchy, a centralized handler, transactions, logging and a safe response to the client.