package proxy.jdk; import java.lang.reflect.InvocationHandler; import java.lang.reflect.Method; public class Proxy implements InvocationHandler { private Object proxyed; public Proxy(Object proxy) { this.proxyed = proxy; } @Override public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { System.out.println("defaultProxy is run"); return method.invoke(proxyed,args); } public static void main(String[] args) { DefaultInterface defaultInterface = new DefaultInterface(); Proxy defaultProxy = new Proxy(defaultInterface); Interface o =(Interface) java.lang.reflect.Proxy.newProxyInstance(Interface.class.getClassLoader(), new Class[]{Interface.class}, new Proxy(defaultInterface)); o.sayHi(); } }