//Proxy

class ProxyObject implements Object {

Object obj;

public ProxyObject() {

System.out.println("这是代理类");

obj = new ObjectImpl();

}

public void action() {

System.out.println("代理开始");

obj.action();

System.out.println("代理结束");

}

}

//Subject

interface Object {

void action();

}

//RealSubject

class ObjectImpl implements Object {

public void action() {

System.out.println("========");

System.out.println("========");

System.out.println("这是被代理的类");

System.out.println("========");

System.out.println("========");

}

}

public class DS12_Proxy{

public static void main(String[] args){

Object obj = new ProxyObject();

obj.action();

}

}