看了就知道的工厂模式---java版_源码下载

 1 /**
 2  * 
 3  */
 4 package com.b510.test;
 5 
 6 import com.b510.factory.AddFactory;
 7 import com.b510.ifactory.IFactory;
 8 import com.b510.operate.Operation;
 9 
10 /**
11  * @author hongten(hongtenzone@foxmail.com)
12  * @date 2013-2-17
13  */
14 public class FactoryTest {
15 
16     public static void main(String[] args) {
17         IFactory operateFactory  = new AddFactory();//这里如果我们想要换另外一种操作，那么只需要修改这里就可以啦，当然必须保证有这样的操作类供选择
18         Operation operation = operateFactory.createOperation();
19         operation.setNumberA(20);
20         operation.setNumberB(34);
21         double result = operation.getResult();
22         System.out.println(result);
23     }
24 }

 1 /**
 2  * 
 3  */
 4 package com.b510.ifactory;
 5 
 6 import com.b510.operate.Operation;
 7 
 8 /**
 9  * 抽象工厂(所有的*Factory都实习抽象工厂)
10  * @author hongten(hongtenzone@foxmail.com)
11  * @date 2013-2-17
12  */
13 public interface IFactory {
14 
15     public Operation createOperation();
16 }

 1 /**
 2  * 
 3  */
 4 package com.b510.factory;
 5 
 6 import com.b510.ifactory.IFactory;
 7 import com.b510.operate.AddOperation;
 8 import com.b510.operate.Operation;
 9 
10 /**
11  * @author hongten(hongtenzone@foxmail.com)
12  * @date 2013-2-17
13  */
14 public class AddFactory implements IFactory{
15 
16     @Override
17     public Operation createOperation() {
18         return new AddOperation();
19     }
20 
21 }

 1 /**
 2  * 
 3  */
 4 package com.b510.operate;
 5 
 6 /**
 7  * 操作类(所有的*Operation都继承操作类)
 8  * @author hongten(hongtenzone@foxmail.com)
 9  * @date 2013-2-17
10  */
11 public class Operation {
12 
13     private double numberA;
14 
15     private double numberB;
16 
17     public double getResult() {
18         double result = 0;
19         return result;
20     }
21 
22     public double getNumberA() {
23         return numberA;
24     }
25 
26     public void setNumberA(double numberA) {
27         this.numberA = numberA;
28     }
29 
30     public double getNumberB() {
31         return numberB;
32     }
33 
34     public void setNumberB(double numberB) {
35         this.numberB = numberB;
36     }
37 
38 }

 1 /**
 2  * 
 3  */
 4 package com.b510.operate;
 5 
 6 /**
 7  * 加法
 8  * @author hongten(hongtenzone@foxmail.com)
 9  * @date 2013-2-17
10  */
11 public class AddOperation extends Operation{
12 
13     public double getResult(){
14         double result = 0;
15         result = getNumberA() + getNumberB();
16         return result;
17     }
18 }