java - 披萨课。添加一个名为 setOfToppings 的集合作为属性。使用Java

Question

我基本上需要将一组添加到我已经拥有的东西上，以允许“客户”在创建比萨饼后添加或删除浇头。这是我已经拥有的:

package pizza;

public class Pizza {

// Declare enums
public enum Size{
   SMALL,
   MEDIUM,
   LARGE,
   JUMBO
}

public enum Crust{
   CHEESY,
   HAND_TOSSEDS,
   THIN_AND_CRISPY,
   DEEP_PAN
}

 public enum Topping{
   MUSHROOMS,
   GREEN_PEPPERS,
   HAM,
   PEPPERONI,
   SAUGSAGE
}


 // declare variables
 private Size pizzaSize;
 private Crust crustType;

private Set<Topping> setOfToppings = new EnumSet<Topping>(Topping.class);

 public Pizza(){

}

public Pizza(Size pizzaSize, Crust crustType) {
   this.pizzaSize = pizzaSize;
   this.crustType = crustType;
}

 public Size getPizzaSize() {
   return pizzaSize;
}
 public void setPizzaSize(Size pizzaSize) {
   this.pizzaSize = pizzaSize;
}
 public Crust getCrustType() {
   return crustType;
}
 public void setCrustType(Crust crustType) {
   this.crustType = crustType;
}

 public String toString(){
   return "A "+pizzaSize+" Pizza with "+crustType+" crust" + "with topping: " + setOfToppings;
}


}

这是测试代码:

package pizza;
import pizza.Pizza.Crust;
import pizza.Pizza.Size;

public class PizzaTest {

 public static void main(String[] args) {

 // use constructor 1
   Pizza vegieCrunch = new Pizza(); 
   vegieCrunch.setCrustType(Crust.THIN_AND_CRISPY);
   vegieCrunch.setPizzaSize(Size.MEDIUM);

 // constructor 2
   Pizza doubleCheese = new Pizza(Size.LARGE, Crust.CHEESY);

   Pizza PartyPizza = new Pizza(Size.JUMBO, Crust.DEEP_PAN);

   // use of getters
   System.out.println("Pizza Vegie Crunch::");
   System.out.println("Size: "+vegieCrunch.getPizzaSize());
   System.out.println("Crust Type: "+vegieCrunch.getCrustType());

   // use of toString
   System.out.println("\nPizza Double Cheese:");
   System.out.println(doubleCheese.toString());

   System.out.println("\nPizza Country Feast:");
   System.out.println(PartyPizza.toString());

   }

    }

我目前的代码运行良好，我只需要帮助添加一个额外的 Enum Toppings 并添加一个名为 setOfToppings 的集合，这样当我测试它时，“客户”可以在创建披萨后添加或删除浇头。提前谢谢你，我对 java 比较陌生，所以也欢迎任何提示或建议!

Answer 1

[...] I just need help with adding an additional enum Toppings

与您定义其他枚举的方式相同:

public enum Topping {
   PINEAPPLE,
   BANANA
}

[...] and add a set named setOfToppings

然后添加一个字段:

private Set<Topping> setOfToppings = EnumSet.noneOf(Topping.class);

您可以创建访问方法，例如

public void addTopping(Topping topping) {
    setOfToppings.add(topping);
}

public Set<Topping> getToppings() {
    return setOfToppings;
}

public void addManyToppings(Topping... toppings) {
    setOfToppings.addAll(Arrays.asList(toppings));
}