How Does Java’s JDK Dynamic Proxy Work Under the Hood? A Deep Dive

This article explains the difference between static and dynamic proxies in Java, walks through JDK dynamic‑proxy implementation steps, analyzes the underlying Proxy class generation process, and compares performance and usage with static proxies and CGLIB.

Dynamic ProxyJDK ProxyJava

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How Does Java’s JDK Dynamic Proxy Work Under the Hood? A Deep Dive

Java Captain

Nov 19, 2018 · Fundamentals

Understanding JDK Dynamic Proxy: Implementation Principles and Code Walkthrough

This article explains how JDK dynamic proxy generates proxy classes at runtime for interfaces using java.lang.reflect.Proxy and InvocationHandler, demonstrates usage with code examples, explores the underlying ProxyGenerator and class‑caching mechanisms, and clarifies why only interface‑based proxies are supported.

Dynamic ProxyInvocationHandlerJDK

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Understanding JDK Dynamic Proxy: Implementation Principles and Code Walkthrough