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JavaIntermediate#generics
JavaAdvanced#jvm
What is reflection in Java?
Answer
API to inspect and modify classes, methods, and fields at runtime. Used by frameworks (Spring, Hibernate) and serializers. Comes with performance and security trade-offs.
Example
Class<?> clazz = Class.forName("java.util.ArrayList");
Method[] methods = clazz.getDeclaredMethods();
Object instance = clazz.getDeclaredConstructor().newInstance();