Demystifying Java Annotations: The Role of Dynamic Proxies and Map-Based Storage
When retrieving metadata at runtime, the Class.getAnnotation() method appears straightforward, but its execution path relies heavily on JVM-level caching and dynamic proxy generation. Every annotated class maintains an internal AnnotationData instance that stores resolved metadata. This cache utilizes a Map<Class<? extends Annotation>, ...
Posted on Thu, 23 Jul 2026 17:06:02 +0000 by fatmikey