增强 修改对象的集中方法（继承、装饰者模式、动态代理）

import java.lang.reflect.InvocationHandler;import java.lang.reflect.Method;import java.lang.reflect.Proxy;import org.junit.Test;interface 狗{public void run();}public class Dog implements 狗 {public void run(){System.out.println("run!!!!!!");}//动态代理增强方法public static void main(String[] args) {//继承SuperDog sd=new SuperDog();sd.run();//装饰模式//Dog dog = new Dog();//BigDog bd=new BigDog(dog);//bd.run();//动态代理//final Dog dog = new Dog();//狗 proxyDog = (狗)Proxy.newProxyInstance(dog.getClass().getClassLoader(), dog.getClass().getInterfaces(), //new InvocationHandler(){//public Object invoke(Object proxy, Method method, Object[] args)//throws Throwable {//if("run".equals(method.getName())){//System.out.println("Proxy Dog");//}//return method.invoke(dog, args);//}//});////proxyDog.run();}}//继承方式增前父类的方法class SuperDog extends Dog{@Overridepublic void run() {System.out.println("SuperDog ");super.run();}}//装饰模式增强被装饰者的方法class BigDog implements 狗{private Dog dog;public BigDog(Dog dog){this.dog = dog;}public void run() {System.out.println("BigDog ");dog.run();}}