建造者模式

 1 package com.khlin;
 2 
 3 public class App {
 4 
 5     public static void main(String[] args) {
 6         Builder builder = new ManUtdBuilder();
 7         Director director = new Director(builder);
 8         director.construct();
 9         SportSuit sportSuit = builder.getProduct();
10         System.out.println(sportSuit.toString());
11     }
12 }
13 
14 class SportSuit {
15     String jersey;
16 
17     String sneakers;
18 
19     String socks;
20 
21     public void setJersey(String jersey) {
22         this.jersey = jersey;
23     }
24 
25     public void setSneakers(String sneakers) {
26         this.sneakers = sneakers;
27     }
28 
29     public void setSocks(String socks) {
30         this.socks = socks;
31     }
32 
33     @Override
34     public String toString() {
35         return "I m wearing " + jersey + " and " + sneakers + " and " + socks;
36     }
37 }
38 
39 interface Builder {
40 
41     void buildJersey();
42 
43     void buildSneakers();
44 
45     void buildSocks();
46 
47     SportSuit getProduct();
48 }
49 
50 class ManUtdBuilder implements Builder {
51 
52     // builder持有产品
53     private SportSuit sportSuit = new SportSuit();
54 
55     @Override
56     public void buildJersey() {
57         this.sportSuit.setJersey("ManUtd Jersey");
58     }
59 
60     @Override
61     public void buildSneakers() {
62         this.sportSuit.setSneakers("Adidas Sneakers");
63     }
64 
65     @Override
66     public void buildSocks() {
67         this.sportSuit.setSocks("Adidas Socks");
68         ;
69     }
70 
71     @Override
72     public SportSuit getProduct() {
73         return this.sportSuit;
74     }
75 }
76 
77 class Director {
78     Builder builder;
79     
80     public Director(Builder builder) {
81         this.builder = builder;
82     }
83     
84     public void construct() {
85         //指定建造的顺序
86         builder.buildJersey();
87         builder.buildSneakers();
88         builder.buildSocks();
89     }
90 }