Skip to main content
PreparationZone Logo
PrepZone

Annotations, Proxies & Processors

Runtime vs compile-time annotations, dynamic proxies and where frameworks hook in.

Pass checkpoint below

Dynamic proxies

Java
public class Example {
    public static void main(String[] args) {
        InvocationHandler handler = (proxy, method, args) -> {
                log.info("Calling {}", method.getName());
                return method.invoke(target, args);
            };
            List<String> proxy = (List<String>) Proxy.newProxyInstance(
                    List.class.getClassLoader(), new Class<?>[] { List.class }, handler);
    }
}

The rest of this guide is part of Pro

Free covers every fresher guide in full. Pro unlocks Senior, Staff and Architect guides across every track.

Test yourself

Answer these before moving on — recall is what makes it stick.