禁止游客随身携带( )A.BIG SCISSORSB.YOGURTC.TIND.AERATED BEVERAGE
禁止游客随身携带( )
A.BIG SCISSORS
B.YOGURT
C.TIN
D.AERATED BEVERAGE
相关考题:
阅读下列说明与相关类图,填空并回答问题。【说明】装饰者模式动态地给一个对象添加一些额外的职责,就扩展功能而言,该模式比生成子类方式更加灵活。装饰模式的提出有助于解决滥用继承的问题。例如,一个名叫星巴兹(Starbuzz)的咖啡连锁店提供多种多样的咖啡,最朴素的设计就是采用继承,即设计一个饮料抽象基类Beverage,让不同种类的咖啡HouseBlend、 Decaf、Espresso、DarkRoast继承Beverage类,如图13-23所示。Beverage类的cost()方法是抽象方法,每个子类的cost()方法实现即返回具体咖啡种类的价钱,Beverage类的 description实例变量由每个子类设置,用来描述该类饮料,Beverage类的getDescription()方法用来返回此描述。客户在点咖啡时还可以要求添加各种各样的调料(Condiment),加入的调料不同所收取的费用也是不同的,让各种加了调料的不同咖啡都继承基类Beverage,当咖啡种类和调料种类很多时,组合种类的数量就会急剧增长,就会发生“类数量爆炸”现象,如图13-24所示。显然,采用这种设计方式会使得代码的维护变得十分困难,可以采用装饰者模式来解决这个问题。软件设计师蝴蝶飞根据装饰者模式的思想设计了如图13-25所示的类图。在图13-25中,将各种调料Milk、Mocha、Soy、Whip作为装饰者来装饰House- Blend、Decal、Espresso、DarkRoast等各种咖啡。下面的Java程序(代码13-6)对应其具体实现。【代码13-6】import java.io.* ;abstract class Beverage{String description="Unknown Beverage";public String getDescription(){return description;}public (1) double cost();}abstract class CondimentDecorator (2) Beverage {public abstract Strmg getDescription();}class Decafextends Beverage {public Decaf(){description="Decaf Coffee";}public double cost(){return 1.05;}}class Espresso extends Beverage {public Espresso() {description="Espresso";}public double cost(){return 1.99;}}class HouseBlend extends Beverage{public HouseBlend(){description="House Blend Coffee";}public double cost(){return.89;}}class DarkRoast extends Beverage{public DarkRoast(){description="Dark Roast Coffee";}public double cost(){return.99;}}class Mocha extends CondtmentDecorator{Beverage (3);public Mocha(Beverage beverage){this.beverage=beverage;}public String getDescription(){return beverage.getDescription()+", Mocha";}public double cost(){return.20+beverage.cost();}}Class Soy extends CondimentDecorator{Beverage beverage;public Soy(Beverage beverage) {this.beverage=beverage;}public Strillg getDescription(){
试题五(共15分)阅读下列说明和C++代码,将应填入(n)处的字句写在答题纸的对应栏内。【说明】某咖啡店当卖咖啡时,可以根据顾客的要求在其中加入各种配料,咖啡店会根据所加入的配料来计算费用。咖啡店所供应的咖啡及配料的种类和价格如下表所示。【C++代码】include iostreaminclude stringusing namespace std;const int ESPRESSO_PRICE = 25;const int DRAKROAST_PRICE = 20;const int MOCHA_PRICE = 10;const int WHIP_PRICE = 8;class Beverage { //饮料(1) :string description;public:(2) (){ return description; }(3) ;};class CondimentDecorator : public Beverage { //配料protected:(4) ;};class Espresso : public Beverage { //蒸馏咖啡public:Espresso () {description="Espresso"; }int cost(){return ESPRESSO_PRICE; }};class DarkRoast : public Beverage { //深度烘焙咖啡public:DarkRoast(){ description = "DardRoast"; }int cost(){ return DRAKROAST_PRICE; }};class Mocha : public CondimentDecorator { //摩卡public:Mocha(Beverage*beverage){ this-beverage=beverage; }string getDescription(){ return beverage-getDescription()+",Mocha"; }int cost(){ return MOCHA_PRICE+beverage-cost(); }};class Whip :public CondimentDecorator { //奶泡public:Whip(Beverage*beverage) { this-beverage=beverage; }string getDescription() {return beverage-getDescription()+",Whip"; }int cost() { return WHIP_PRICE+beverage-cost(); }};int main() {Beverage* beverage = new DarkRoast();beverage=new Mocha( (5) );beverage=new Whip( (6) );coutbeverage-getDescription()"¥"beverage-cost() endl;return 0;}编译运行上述程序,其输出结果为:DarkRoast, Mocha, Whip ¥38
试题六(共15分)阅读下列说明和Java代码,将应填入(n)处的字句写在答题纸的对应栏内。【说明】某咖啡店当卖咖啡时,可以根据顾客的要求在其中加入各种配料,咖啡店会根据所加入的配料来计算费用。咖啡店所供应的咖啡及配料的种类和价格如下表所示。【Java代码】import java.util.*;(1) class Beverage { //饮料String description = "Unknown Beverage";public (2) (){return description;}public (3) ;}abstract class CondimentDecorator extends Beverage { //配料(4) ;}class Espresso extends Beverage { //蒸馏咖啡private final int ESPRESSO_PRICE = 25;public Espresso() { description="Espresso"; }public int cost() { return ESPRESSO_PRICE; }}class DarkRoast extends Beverage { //深度烘焙咖啡private finalint DARKROAST_PRICE = 20;public DarkRoast() { description = "DarkRoast"; }public int cost(){ rcturn DARKROAST PRICE; }}class Mocha extends CondimentDecorator { //摩卡private final int MOCHA_PRICE = 10;public Mocha(Beverage beverage) {this.beverage = beverage;}public String getDescription() {return beverage.getDescription0 + ", Mocha";}public int cost() {return MOCHA_PRICE + beverage.cost();}}class Whip extends CondimentDecorator { //奶泡private finalint WHIP_PRICE = 8;public Whip(Beverage beverage) { this.beverage = beverage; }public String getDescription() {return beverage.getDescription()+", Whip";}public int cost() { return WHIP_PRICE + beverage.cost(); }}public class Coffee {public static void main(String args[]) {Beverage beverage = new DarkRoast();beverage=new Mocha( 5 );beverage=new Whip ( 6 );System.out.println(beverage.getDescription() +"¥" +beverage.cost());}}编译运行上述程序,其输出结果为:DarkRoast, Mocha, Whip ¥38
class Beverage { Beverage() { System.out.print("beverage "); } } class Beer extends Beverage { public static void main(String [] args) { Beer b = new Beer(14); } public int Beer(int x) { this(); System.out.print("beer1 "); } public Beer() { System.out.print("beer2 "); } } 结果是什么?() A、beer1 beverageB、beer2 beverageC、beverage beer1D、编译失败
单选题现有 class Beverage { Beverage () { System.out.print ("beverage "); } } class Beer extends Beverage { public static void main{string [] args) { Beer b = new Beer (14) ; } public int Beer(int x) { this () ; System.out.print ("beerl") ; } public Beer() { System.out.print("beer2 "); } } 结果是什么?()Abeerl beverageBbeer2 beverageCbeverage beer2 beerlD编译失败
单选题class Beverage { Beverage() { System.out.print("beverage "); } } class Beer extends Beverage { public static void main(String [] args) { Beer b = new Beer(14); } public int Beer(int x) { this(); System.out.print("beer1 "); } public Beer() { System.out.print("beer2 "); } } 结果是什么?()Abeer1 beverageBbeer2 beverageCbeverage beer1D编译失败