适合场合:
1. 当要例子化类是在运行时刻指定时例如通过动态装载；
2. 为了避免创建个和产品类层次平行工厂类层次时；
3. 当个类例子只能有几个区别状态组合中种时建立相应数目原型并克隆它们可能比每次用合适状态手工例子化该类更方便些
java 代码

=dp-j>
1. =alt>=keyword>package created;   
2. ="">=comment>/* @author hexiong  
3. =alt>=comment> * 3rd object-created-type pattern, builder  
4. ="">=comment> */  
5. =alt>=keyword>abstract =keyword> AbstractPrototype   
6. ="">{   
7. =alt>     =keyword>public =keyword>abstract AbstractPrototype cloneYourself;   
8. ="">}   
9. =alt>  
10. ="">=keyword> MyPrototype =keyword>extends AbstractPrototype   
11. =alt>{   
12. ="">     =keyword>public AbstractPrototype cloneYourself      
13. =alt>     {   
14. ="">         =keyword>try {   
15. =alt>             .out.prln(=>"Myprototype clone.");   
16. ="">             =keyword> (AbstractPrototype)=keyword>this.clone;   
17. =alt>         } =keyword>catch (CloneNotSupportedException e) {   
18. ="">             =keyword> =keyword>null;   
19. =alt>         }   
20. ="">     }   
21. =alt>}   
22. ="">  
23. =alt>=keyword> YourPrototype   =keyword>extends AbstractPrototype   
24. ="">{   
25. =alt>     =keyword>public AbstractPrototype cloneYourself      
26. ="">     {   
27. =alt>         =keyword>try {   
28. ="">             .out.prln(=>"Yourprototype clone.");   
29. =alt>             =keyword> (AbstractPrototype)=keyword>this.clone;   
30. ="">         } =keyword>catch (CloneNotSupportedException e) {   
31. =alt>             =keyword> =keyword>null;   
32. ="">         }   
33. =alt>     }   
34. ="">}   
35. =alt>  
36. ="">=keyword> PrototypeSetting   
37. =alt>{   
38. ="">     =keyword>private AbstractPrototype prototype_;   
39. =alt>     =keyword>public =keyword>void Prototype(AbstractPrototype prototype)   
40. ="">     {   
41. =alt>         prototype_ = prototype;   
42. ="">     }   
43. =alt>     =keyword>public =keyword>void method1   
44. ="">     {   
45. =alt>         AbstractPrototype p = prototype_.cloneYourself;   
46. ="">         =comment>// other operation on p.   
47. =alt>     }   
48. ="">}   
49. =alt>  
50. ="">=keyword>public =keyword> PrototypeDemo   
51. =alt>{   
52. ="">  
53. =alt>     =comment>/**  
54. ="">=comment>      * @param args  
55. =alt>=comment>      */  
56. ="">     =keyword>public =keyword> =keyword>void (String args)   
57. =alt>     {   
58. ="">         =comment>// TODO Auto-generated method stub   
59. =alt>         PrototypeSetting p = =keyword> PrototypeSetting;   
60. ="">         p.Prototype(=keyword> MyPrototype);   
61. =alt>         p.method1;   
62. ="">     }   
63. =alt>  
64. ="">}