Java Proxy that exposes a management interface

ShutdownableProxy.java

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;

public class ShutdownableProxy {

	public static interface Service {
		public void doit();
	}

	public static interface Shutdownable {
		public void shutdown();
	}

	public static class ServiceHandler implements InvocationHandler {

		public void shutdown() {
			System.out.println("Executing shutdown...");
		}

		@Override
		public Object invoke(Object proxy, Method method, Object[] args)
				throws Throwable {
			switch (method.getName()) {
			case "doit":
				System.out.println("Executing doit...");
				break;
			case "shutdown":
				shutdown();
				break;
			}
			return null;
		}
	}

	public static Service createProxy() {
		return (Service) Proxy.newProxyInstance(Thread.currentThread()
				.getContextClassLoader(), new Class[] { Service.class,
				Shutdownable.class }, new ServiceHandler());
	}

	public static void main(String[] args) {
		Service s = createProxy();

		s.doit();

		((Shutdownable) s).shutdown();

		// less elegant and coupled to the invocation handler implementation:
		((ServiceHandler) Proxy.getInvocationHandler(s)).shutdown();
	}
}