看了就知道的工厂模式java版_源码下载

项目结构：

运行结果：

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代码部分：

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/Factory/src/com/b510/test/FactoryTest.java

/**
 * 
 */
package com.b510.test;

import com.b510.factory.AddFactory;
import com.b510.ifactory.IFactory;
import com.b510.operate.Operation;

/**
 * @author hongten(hongtenzone@foxmail.com)
 * @date 2013-2-17
 */
public class FactoryTest {

    public static void main(String[] args) {
        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
        Operation operation = operateFactory.createOperation();
        operation.setNumberA(20);
        operation.setNumberB(34);
        double result = operation.getResult();
        System.out.println(result);
    }
}

/Factory/src/com/b510/ifactory/IFactory.java

/**
 * 
 */
package com.b510.ifactory;

import com.b510.operate.Operation;

/**
 * 抽象工厂(所有的*Factory都实习抽象工厂)
 * @author hongten(hongtenzone@foxmail.com)
 * @date 2013-2-17
 */
public interface IFactory {

    public Operation createOperation();
}

/Factory/src/com/b510/factory/AddFactory.java

/**
 * 
 */
package com.b510.factory;

import com.b510.ifactory.IFactory;
import com.b510.operate.AddOperation;
import com.b510.operate.Operation;

/**
 * @author hongten(hongtenzone@foxmail.com)
 * @date 2013-2-17
 */
public class AddFactory implements IFactory{

    @Override
    public Operation createOperation() {
        return new AddOperation();
    }

}

/Factory/src/com/b510/operate/Operation.java

/**
 * 
 */
package com.b510.operate;

/**
 * 操作类(所有的*Operation都继承操作类)
 * @author hongten(hongtenzone@foxmail.com)
 * @date 2013-2-17
 */
public class Operation {

    private double numberA;

    private double numberB;

    public double getResult() {
        double result = 0;
        return result;
    }

    public double getNumberA() {
        return numberA;
    }

    public void setNumberA(double numberA) {
        this.numberA = numberA;
    }

    public double getNumberB() {
        return numberB;
    }

    public void setNumberB(double numberB) {
        this.numberB = numberB;
    }

}

/Factory/src/com/b510/operate/AddOperation.java

/**
 * 
 */
package com.b510.operate;

/**
 * 加法
 * @author hongten(hongtenzone@foxmail.com)
 * @date 2013-2-17
 */
public class AddOperation extends Operation{

    public double getResult(){
        double result = 0;
        result = getNumberA() + getNumberB();
        return result;
    }
}

源码下载:https://files.cnblogs.com/hongten/Factory.zip