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軟件設計師案例分析每日一練試題內容(2021/11/24)
閱讀下列說明和 Java代碼,將應填入 (n) 處的字句寫在答題紙的對應欄內。
【說明】
某快餐廳主要制作并出售兒童套餐,一般包括主餐(各類比薩)、飲料和玩具,其餐品種類可能不同,但其制作過程相同。前臺服務員 (Waiter) 調度廚師制作套餐?,F采用生成器 (Builder) 模式實現制作過程,得到如圖 6-1 所示的類圖。
 
 【Java代碼】
class Pizza {
private String parts;
public void setParts(String parts) {     this.parts = parts; }
public String toString() {      return this.parts;   }
}
abstract class PizzaBuilder {
protected Pizza pizza;
public Pizza getPizza() { return pizza;  }
public void createNewPizza() {      pizza = new Pizza();     }
public  (1)   ;
}
class HawaiianPizzaBuilder extends PizzaBuilder {
public void buildParts() {     pizza.setParts("cross + mild + ham&pineapp1e”};
}
class SpicyPizzaBuilder extends PizzaBuilder {
public void buildParts() { pizza.setParts("pan baked + hot + pepperoni&salami");          }
}
class Waiter {
private PizzaBuilder pizzaBuilder;
public void setPizzaBuilder(PizzaBuilder pizzaBuilder) {  /*設置構建器*/
( 2 )    ;
}
public Pizza getPizza(){ return pizzaBuilder.getPizza(); }
public void construct() {      /*構建*/
pizzaBuilder.createNewPizza();
( 3 )   ;
}
}
Class FastFoodOrdering {
public static viod mainSting[]args) {
Waiter waiter = new Waiter();
PizzaBuilder hawaiian_pizzabuilder = new HawaiianPizzaBuilder();
( 4 )    ;
( 5 )    ;
System.out.println("pizza: " + waiter.getPizza());
}
}
程序的輸出結果為:
Pizza:cross + mild + ham&pineapple
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