设计模式---简单工场模式

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使用静态工场模式，就是通过给工场提出对应的要求，通过调用工场的对应的静态方法来创建我们所需要的对象，工场的内部实现可以调用构造方法也可以通过反射来实现

如下:首先定义抽象类Food，它有二个实现类Rice和Apple,

package com.zcj. factorypattern;public abstract class Food {    public abstract void print();}

package com.zcj.staticpattern;public class Rice extends Food {@Overridepublic void print() {// TODO Auto-generated method stubSystem.out.println("i am rice");}}

package com.zcj.staticpattern<span style="font-family: Arial, Helvetica, sans-serif;">;</span>public class Apple extends Food{@Overridepublic void print() {// TODO Auto-generated method stubSystem.out.println("i am apple");}}

下面是工场的定义：

package com.zcj.staticfactorypattern;public class FoodFactory {    public static Food createFood(String type) throws InstantiationException, IllegalAccessException, ClassNotFoundException{    if(type=="rice"){    return (Food) Class.forName("com.zcj.abstracfactorypattern.Rice").newInstance();    }    else{    return (Food) Class.forName("com.zcj.abstracfactorypattern.Apple").newInstance();    }    }}

最下面是我们的测试程序：

package com.zcj.staticfactorypattern;public class StaticFactoryTest {   public static void main(String[] args) throws InstantiationException, IllegalAccessException, ClassNotFoundException {  Food food  =FoodFactory.createFood("apple");  food.print();   }}

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