适配器模式

适配器模式就是将一个类的接口转换成客户希望的另外一个接口。从而复用旧类的功能，

 1 public class Adapter {
 2 
 3     public static void main(String[] args) {
 4         Network n = new CiscoNetworkAdapter();
 5         n.download();
 6     }
 7 }
 8 
 9 interface Network {
10     void download();
11 }
12 
13 class CiscoNetworkAdapter implements Network {
14 
15     private Cisco cisco = new Cisco();
16     
17     @Override
18     public void download() {
19         cisco.download();
20     }
21 }
22 
23 class Cisco {
24     void download() {
25         System.out.println("download with cisco");
26     }
27 }