Java, Spring & software maintenance discussion

Problem A conceptual discussion across Java and Spring fundamentals and how you keep a codebase healthy over time.

Be ready to discuss

• Java: collections, generics, exceptions, the memory model and garbage collection, concurrency (threads, executors, synchronization).
• Spring: dependency injection and bean lifecycle, Spring Boot auto-configuration, transaction management, REST controllers.
• Software maintenance: refactoring strategy, paying down tech debt, test coverage, backward compatibility, and reading/understanding unfamiliar code.