抽象工厂

2018-11-02 20:54:09 开始写

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ifactory.java类（顶层）

1 package abstractfactory;
2 
3 public interface ifactory {
4     public iuser createuser();
5     public idepartment createdepartment();
6 }

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iuser.java类（下层）

1 package abstractfactory;
2 
3 public interface iuser {
4     public void insert();
5     public void getbyid();
6 }

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idepartment.java类（下层）

1 package abstractfactory;
2 
3 public interface idepartment {
4     public void insert();
5     public void getdepartmentbyid();
6 }

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accessuser.java类

 1 package abstractfactory;
 2 
 3 public class accessdepartment implements idepartment {
 4 
 5     @override
 6     public void insert() {
 7         // todo auto-generated method stub
 8         system.out.println("insert department into sqlserver.");
 9     }
10 
11     @override
12     public void getdepartmentbyid() {
13         // todo auto-generated method stub
14         system.out.println("get department in ssqlserver by id.");
15     }
16 
17 }

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accessdepartment.java类

 1 package abstractfactory;
 2 
 3 public class accessdepartment implements idepartment {
 4 
 5     @override
 6     public void insert() {
 7         // todo auto-generated method stub
 8         system.out.println("insert department into sqlserver.");
 9     }
10 
11     @override
12     public void getdepartmentbyid() {
13         // todo auto-generated method stub
14         system.out.println("get department in ssqlserver by id.");
15     }
16 
17 }

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accessfactory.java类

 1 package abstractfactory;
 2 
 3 public class accessdepartment implements idepartment {
 4 
 5     @override
 6     public void insert() {
 7         // todo auto-generated method stub
 8         system.out.println("insert department into sqlserver.");
 9     }
10 
11     @override
12     public void getdepartmentbyid() {
13         // todo auto-generated method stub
14         system.out.println("get department in ssqlserver by id.");
15     }
16 
17 }

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factorytest.java类

 1 package abstractfactory;
 2 
 3 public class factorytest {
 4 
 5     public static void main(string[] args) {
 6         // todo auto-generated method stub
 7         ifactory factory = new accessfactory();
 8         iuser user = factory.createuser();
 9         idepartment department = factory.createdepartment();
10         user.insert();
11         user.getbyid();
12         department.insert();
13         department.getdepartmentbyid();
14     }
15 
16 }

说明：

需要一个*接口、两个下层接口、两个实现下层接口的具体实现的类、1个顶层接口具体实现的类（用于创建下层接口具体实现的类）、主方法调用

ifactory factory = new accessfactory();向上转型1次（顶层接口）（顶层接口中有两个抽象方法，下层的向上转型是同级别的）
iuser user = factory.createuser();向上转型1次（下层接口）
idepartment department = factory.createdepartment();向上转型1次（下层接口）
user.insert();最后调用子类方法返回结果
user.getbyid();最后调用子类方法返回结果
department.insert();最后调用子类方法返回结果
department.getdepartmentbyid();最后调用子类方法返回结果

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