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用户需求：
用程序模拟以下产品线并代码实现
设计思路：
1.UML图
具体代码实现：
1.创建一个创造套餐的建造者接口IMealBuilder
public interface IMealBuilder { public void BuildBurger(); public void BuildChips(); public void BuildDrink(); Meal GetMeal(); }
2.编写Meal类用来存放建造者需要的建造的食物。
public class Meal { private List<IFood> foodList=new ArrayList<IFood>(); public void addFood( IFood food ) { foodList.add(food); } public void Show() { for (int i=0; i<foodList.size(); i++) { foodList.get(i).Make(); } } }
3.分别创建肯德基、麦当劳两家店的建造者KFCBuilder、McDonaldBuilder，这俩家店都有相似套餐：汉堡+薯条+饮料，但是产品不同。所以都继承同样的建造过程IMealBuilder
以下是肯德基的建造者KFCBuilder：
public class KFCBuilder implements IMealBuilder { protected Meal meal=new Meal(); @Override public void BuildBurger() { // TODO Auto-generated method stub IFood food = new KFCBurger(); meal.addFood(food); } @Override public void BuildChips() { // TODO Auto-generated method stub IFood food = new KFCChips(); meal.addFood(food); } @Override public void BuildDrink() { // TODO Auto-generated method stub IFood food = new KFCDrink(); meal.addFood(food); } @Override public Meal GetMeal() { // TODO Auto-generated method stub return meal; } }
以下是麦当劳的建造者McDonaldBuilder：
public class McDonaldBuilder implements IMealBuilder{ protected Meal meal=new Meal(); @Override public void BuildBurger() { // TODO Auto-generated method stub IFood food = new McDonaldBurger(); meal.addFood(food); } @Override public void BuildChips() { // TODO Auto-generated method stub IFood food = new McDonaldChips(); meal.addFood(food); } @Override public void BuildDrink() { // TODO Auto-generated method stub IFood food = new McDonaldDrink(); meal.addFood(food); } @Override public Meal GetMeal() { // TODO Auto-generated method stub return meal; } }
4.创建一个指挥者MealDirector用来负责控制产品的创建过程。
public class MealDirector{ private IMealBuilder _builder; public MealDirector( IMealBuilder builder ) { _builder = builder; } public Meal CreateMeal() { _builder.BuildBurger(); _builder.BuildChips(); _builder.BuildDrink(); return _builder.GetMeal(); } }
5.创建一个食物的接口IFood，具有制作事物的方法Make（）。
public interface IFood{ 2 3 public abstract void Make(); 4 }
6.分别编写肯德基、麦当劳各种食品的制作方法，以输出为反馈。
public class KFCBurger implements IFood { @Override public void Make() { // TODO Auto-generated method stub System.out.println("KFC汉堡做好了！"); } } KFCBurger
public class KFCChips implements IFood { @Override public void Make() { // TODO Auto-generated method stub System.out.println("KFC薯条做好了！"); } } KFCChips
public class KFCDrink implements IFood { @Override public void Make() { // TODO Auto-generated method stub System.out.println("KFC饮料做好了！"); } } KFCDrink
public class McDonaldBurger implements IFood { @Override public void Make() { // TODO Auto-generated method stub System.out.println("McDonald汉堡做好了！"); } } McDonaldBurger
public class McDonaldChips implements IFood { @Override public void Make() { // TODO Auto-generated method stub System.out.println("McDonald薯条做好了！"); } } McDonaldChips
public class McDonaldDrink implements IFood { @Override public void Make() { // TODO Auto-generated method stub System.out.println("McDonald饮料做好了！"); } } McDonaldDrink
7.书写主函数Main来分别创建肯德基和麦当劳的建造者和指挥者，来制作各自的套餐。
public class Main { public static void main(String[] args) { // TODO Auto-generated method stub IMealBuilder builder1 = new KFCBuilder(); MealDirector director1 = new MealDirector(builder1); director1.CreateMeal().Show();; IMealBuilder builder2 = new McDonaldBuilder(); MealDirector director2 = new MealDirector(builder2); director2.CreateMeal().Show(); } }
输出结果看是否符合要求：
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原文地址：http://www.cnblogs.com/leaderchen/p/5083417.html
