java中的代理模式 用接口

package test;

interface  NetWork{
public void browser();
}
class  Real implements  NetWork{
public void  browser(){
System.out.println("上网信息浏览量");
}
}

class  Proxy  implements  NetWork{
private  NetWork  network;
public  Proxy(NetWork  network){
this.network=network;
}
public void  browser(){
checkName();
this.network.browser();
}
private  void  checkName(){

}
}

public  class  Test1{
public  static void main(String args[]){
new Proxy(new Real()).browser();
}
}