java中工厂模式

 1 class Product 
 2 { 
 3     @Override 
 4     public String toString() { 
 5         return "Product"; 
 6     }  
 7 } 
 8  
 9 interface Builder 
10 { 
11     void BuildPart(); 
12 } 
13  
14 class ConcreteBuilder implements Builder 
15 { 
16      
17     @Override 
18     public void BuildPart() { 
19         // TODO Auto-generated method stub 
20         System.out.println("Building Product's part"); 
21     } 
22      
23     public Product GetResult() 
24     { 
25         System.out.println("Product's Building has finished"); 
26         return new Product(); 
27           
28     } 
29 } 
30  
31 class Director 
32 { 
33     public Product Construct(ConcreteBuilder cb) 
34     { 
35         cb.BuildPart(); 
36         return cb.GetResult(); 
37     } 
38 } 
39  
40 public class TestModelBuilder { 
41  
42     /** 
43      * @param args 
44      */ 
45     public static void main(String[] args) { 
46         // TODO Auto-generated method stub 
47         Director d=new Director(); 
48         ConcreteBuilder cb=new ConcreteBuilder(); 
49         Product p=d.Construct(cb); 
50         System.out.println(p); 
51     } 
52 }

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例子

 1 class Car{ 
 2  
 3     @Override 
 4     public String toString() { 
 5         return "汽车产品"; 
 6     } 
 7 } 
 8  
 9 interface  IBuilder 
10 { 
11     void BuildWheel(); 
12     void BuildCarFrame(); 
13     void BuildEngine();  
14 } 
15  
16 class CarBuilder implements IBuilder 
17 { 
18  
19     private Car car=new Car(); 
20     @Override 
21     public void BuildCarFrame() { 
22         // TODO Auto-generated method stub 
23         System.out.println("建造汽车框架"); 
24     } 
25  
26     @Override 
27     public void BuildEngine() { 
28         // TODO Auto-generated method stub 
29         System.out.println("建造汽车轮子"); 
30     } 
31  
32     @Override 
33     public void BuildWheel() { 
34         // TODO Auto-generated method stub 
35         System.out.println("建造汽车引擎"); 
36     } 
37      
38     public Car CarBuildOver() 
39     { 
40         System.out.println("汽车组装完毕"); 
41         return car; 
42     } 
43 } 
44  
45 class CarDirector 
46 { 
47      
48     public Car BuildCar(CarBuilder cb) 
49     { 
50         cb.BuildCarFrame(); 
51         cb.BuildEngine(); 
52         cb.BuildWheel(); 
53         return cb.CarBuildOver(); 
54     } 
55 } 
56  
57 public class TestModelBuilder_1 { 
58  
59     /** 
60      * @param args 
61      */ 
62     public static void main(String[] args) { 
63         // TODO Auto-generated method stub 
64         CarDirector cd=new CarDirector(); 
65         Car c=cd.BuildCar(new CarBuilder()); 
66         System.out.println(c); 
67     } 
68 }

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