代理模式

package Jiekou;

/**
 * @author liu$
 * @version 1.0
 * @description: TODO
 * @date $ $
 */
//被代理类对象不调方法，把对象放到代理类里面调方法
public class daili {
    public static void main(String[] args) {
        Server server = new Server();
        ProxySever proxySever = new ProxySever(server) ; //相当于把server赋给属性NetWork
        proxySever.brose() ;
    }
}
interface NetWork{
    public void brose();
}

//被代理类
class Server implements NetWork{

    @Override
    public void brose() {
        System.out.println("真实的服务器访问网络");
    }
}

//代理类
class ProxySever implements NetWork{
    private NetWork work ;

    public ProxySever(NetWork work){
        this.work = work ;
    }

    public void check(){
        System.out.println("联网前的检查工作");
    }

    public void brose(){
        check();
        work.brose();
    }
}