Java Customer Foodmenu Chef (接口实例)

public class Test{
    
    
    public static void main(String[] arg) {
    
    
        FoodMenu foodMenu = new ChinaChief();
        FoodMenu foodMenu1 = new AmericenChief();
        Customer customer = new Customer(foodMenu1);
        Customer customer2 = new Customer(foodMenu);
        customer.order();
        customer2.order();
    }
}

public class Customer {
    
    
    private FoodMenu foodMenu;
    public Customer() {
    
    
    }

    public Customer(FoodMenu foodMenu) {
    
    
        this.foodMenu = foodMenu;
    }

    public FoodMenu getFoodMenu() {
    
    
        return foodMenu;
    }

    public void setFoodMenu(FoodMenu foodMenu) {
    
    
        this.foodMenu = foodMenu;
    }
    public void order(){
    
    

        this.getFoodMenu().qingJiaoChaoJiDan();
        this.getFoodMenu().xiHongShiChaoJiDan();
    }
}

interface FoodMenu {
    
    
    void xiHongShiChaoJiDan();
    void qingJiaoChaoJiDan();
}

public class ChinaChief implements FoodMenu{
    
    
    @Override
    public void xiHongShiChaoJiDan() {
    
    
        System.out.println("我正在做中国口味的西红柿炒鸡蛋");
    }

    @Override
    public void qingJiaoChaoJiDan() {
    
    
        System.out.println("我正在做中国口味的青椒炒鸡蛋");
    }
}

public class AmericenChief implements FoodMenu{
    
    
    @Override
    public void xiHongShiChaoJiDan() {
    
    
        System.out.println("我正在做西式的西红柿炒鸡蛋");
    }

    @Override
    public void qingJiaoChaoJiDan() {
    
    
        System.out.println("我正在做西式的青椒炒鸡蛋");
    }
}

顾客拥有菜单，厨师实现菜单，使得顾客和厨师之间不再有关系，真正有关系的是顾客和菜单，厨师和菜单，有了菜单顾客就可以点菜，有了菜单厨师就可以炒菜；