抽象工厂模式

 1 interface IFood
 2 {
 3     abstract void order();
 4 }
 5 abstract class Burger implements IFood
 6 {
 7 }
 8 abstract class Chicken implements IFood
 9 {
10 }
11 abstract class Drink implements IFood
12 {
13 }

 1 class KFC_Burger extends Burger
 2 {
 3     public void order()
 4     {
 5         System.out.println("This is KFC‘s Burger!");
 6     }
 7 }
 8 class MD_Burger extends Burger
 9 {
10     public void order()
11     {
12         System.out.println("This is McDonalds‘s Burger!");
13     }
14 }

 1 class KFC_Chicken extends Chicken
 2 {
 3     public void order()
 4     {
 5         System.out.println("This is KFC‘s Chicken!");
 6     }
 7 }
 8 class MD_Chicken extends Chicken
 9 {
10     public void order()
11     {
12         System.out.println("This is McDonalds‘s Chicken!");
13     }
14 }

 1 class KFC_Drink extends Drink
 2 {
 3     public void order()
 4     {
 5         System.out.println("This is KFC‘s Drink!");
 6     }
 7 }
 8 class MD_Drink extends Drink
 9 {
10     public void order()
11     {
12         System.out.println("This is McDonalds‘s Drink!");
13     }
14 }

1 public interface IFoodFactory
2 {
3     Burger CreateBurger();
4     Chicken CreateChicken();
5     Drink CreateDrink();
6 }

 1 public class KFCFactory implements IFoodFactory
 2 {
 3     public Burger CreateBurger()
 4     {
 5         Burger x=new KFC_Burger();
 6         return x;
 7     }
 8     public Chicken CreateChicken()
 9     {
10         Chicken x=new KFC_Chicken();
11         return x;
12     }
13     public Drink CreateDrink()
14     {
15         Drink x=new KFC_Drink();
16         return x;
17     }
18 }

 1 public class McDonaldsFactory implements IFoodFactory
 2 {
 3     public Burger CreateBurger()
 4     {
 5         Burger x=new MD_Burger();
 6         return x;
 7     }
 8     public Chicken CreateChicken()
 9     {
10         Chicken x=new MD_Chicken();
11         return x;
12     }
13     public Drink CreateDrink()
14     {
15         Drink x=new MD_Drink();
16         return x;
17     }
18 }

 1 public class test
 2 {
 3     public static void main(String[] args) 
 4     {
 5         IFoodFactory factory1=new McDonaldsFactory();
 6         IFoodFactory factory2=new KFCFactory();
 7         Burger burger1 = factory1.CreateBurger();
 8         Chicken chicken1 = factory1.CreateChicken();
 9         Drink drink1 = factory1.CreateDrink();
10         burger1.order();
11         chicken1.order();
12         drink1.order();
13         Burger burger2 = factory2.CreateBurger();
14         Chicken chicken2 = factory2.CreateChicken();
15         Drink drink2 = factory2.CreateDrink();
16         burger2.order();
17         chicken2.order();
18         drink2.order();
19     }
20 }