Java 接口的应用：代理模式

package com.bytezreo.interfacetest;

/**
 * 
 * @Description  接口的应用：代理模式
 * @author Bytezero·zhenglei!        Email:420498246@qq.com
 * @version
 * @date 下午8:20:23
 * @
 *
 */
public class NetWorkTest {

    public static void main(String[] args) {
        
        Server server = new Server();
        ProxyServer proxyServer = new ProxyServer(server);
        
        proxyServer.browse();
        
    }
}

interface NetWork{
    
    public void browse();
}

//被代理类
class Server implements NetWork{

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

//代理类
class ProxyServer implements NetWork{
    
    private NetWork work;
    
    public  ProxyServer(NetWork work){
        
        this.work = work;
    }

    public void check() {
        
        System.out.println("联网之前的检查工作");
    }
    
    @Override
    public void browse() {
    
        check();
        work.browse();
        
    }
    
    
    
}