Android学习笔记--设计模式之建造者

 1 package chouxianglianxi;
 2 
 3 public class DuanXinBao {
 4     private int qian;
 5     private int shuliang;
 6     public int getQian() {
 7         return qian;
 8     }
 9     public void setQian(int qian) {
10         this.qian = qian;
11     }
12     public int getShuliang() {
13         return shuliang;
14     }
15     public void setShuliang(int shuliang) {
16         this.shuliang = shuliang;
17     }
18     
19     
20 }

 1 package chouxianglianxi;
 2 
 3 public interface IJieKou {
 4     //为金额赋值
 5     void booqian();
 6     //为数量赋值
 7     void booshuliang();
 8     //返回有数据的类
 9     DuanXinBao dduanxin();
10 }

 1 package chouxianglianxi;
 2 
 3 public class ShiXian implements IJieKou {
 4     private DuanXinBao duanxinbao;
 5 
 6     public ShiXian(){
 7         //new出来实例
 8         duanxinbao = new DuanXinBao();
 9     }
10     @Override
11     public void booqian() {
12         //赋值
13         duanxinbao.setQian(100);
14     }
15 
16     @Override
17     public void booshuliang() {
18         //赋值
19         duanxinbao.setShuliang(5000);
20     }
21 
22     @Override
23     public DuanXinBao dduanxin() {
24         //返回出去
25         return duanxinbao;
26     }
27 
28 }

 1 package chouxianglianxi;
 2 
 3 public class MessageDLod {
 4     //返回类型为Bean
 5     public DuanXinBao getduanxin(IJieKou ijiekou){
 6         //
 7         if(ijiekou != null){
 8             //执行赋值的方法
 9             ijiekou.booqian();
10             ijiekou.booshuliang();
11             //赋值完毕把它返回出去
12             return ijiekou.dduanxin();
13         }
14         return null;
15     }
16 }

 1 package chouxianglianxi;
 2 
 3 public class Client {
 4     public static void main(String[] args) {
 5         //里面有数量和金额的文件
 6         IJieKou is = new ShiXian();
 7         //构造者
 8         MessageDLod messag = new MessageDLod();
 9         //拿到文件为它赋值
10         DuanXinBao duanxinbao = messag.getduanxin(is);
11         //读取
12         System.out.println(duanxinbao.getQian());
13         System.out.println(duanxinbao.getShuliang());
14     }
15 }