[原]工厂模式

[关键字]:java,design pattern,设计模式,《Java与模式》,Factory
[环境]:StarUML5.0 + JDK6
[作者]:Winty ([email protected])
UML图:


 
代码：

/**
 *工厂模式测试类
 *@version 2009-4-3
 *@author Winty([email protected])
 */
package pattern.factory;

public class Factory{
    public static void main(String[] args){
        Fruit fruit;
        FruitGardener fruitGardener;

        fruitGardener = new AppleGardener();
        fruit = fruitGardener.factory();
        fruit.plant();
        fruit.harvest();

        fruitGardener = new StrawberryGardener();
        fruit = fruitGardener.factory();
        fruit.plant();
        fruit.harvest();

        fruitGardener = new GrapeGardener();
        fruit = fruitGardener.factory();
        fruit.plant();
        fruit.harvest();
    }
}

/**
 *抽象产品
 */
abstract class Fruit{
    protected String name;

    public abstract void plant();
    public abstract void harvest();
}

/**
 *具体产品(Apple)
 */
class Apple extends Fruit{
    public Apple(){
        name = "Apple";
    }

    @Override
    public void plant(){
        System.out.println(name + " plant");
    }

    @Override
    public void harvest(){
        System.out.println(name + " harvest");
    }
}

/**
 *具体产品(草莓)
 */
class Strawberry extends Fruit{
     
    public Strawberry(){
        name = "Strawberry";
    }
   
    @Override
    public void plant(){
        System.out.println(name + " plant");
    }

    @Override
    public void harvest(){
        System.out.println(name + " harvest");
    }
}

/**
 *具体产品(葡萄)
 */
class Grape extends Fruit{
    public Grape(){
        name = "Grape";
    }

    @Override
    public void plant(){
        System.out.println(name + " plant");
    }

    @Override
    public void harvest(){
        System.out.println(name + " harvest");
    }
}


/**
 *抽象工厂类
 */
abstract class FruitGardener{
    public abstract Fruit factory();
}

/**
 *具体Apple工厂
 */
class AppleGardener extends FruitGardener{
    @Override
    public Fruit factory(){
        return new Apple();
    }
}

/**
 *具体草莓工厂
 */
class StrawberryGardener extends FruitGardener{
    @Override
    public Fruit factory(){
        return new Strawberry();
    }
}

/**
 *具体葡萄工厂
 */
class GrapeGardener extends FruitGardener{
    @Override
    public Fruit factory(){
        return new Grape();
    }
}