Java: Custom Annotations

Reflection can introduce performance overhead and complexity, but it allows dynamic behavior.

Reflection enables a mini-framework to dynamically inspect and interact with annotations at runtime, allowing behaviors to be defined declaratively via annotations. This can lead to more flexible and decoupled code. However, reflection is slower than direct method calls and can make code harder to understand and maintain. For example, in an e-commerce application, using reflection to map HTTP routes to handler methods annotated with @Route can simplify configuration. Yet, developers must handle potential exceptions and ensure proper security measures, as reflection can bypass access controls.