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publicclassPet{privateStringname；publicPet（）{System.out.print（1）；}publicPet（Stringname）{System.out.print（2）；}}publicclassDogextendsPet{publicDog（）{System.out.print（4）；}publicDog（Stringname）{super（name）；System.out.print（3）；}}执行newDog（棕熊”）；后程序输出是哪项？（）
A.33
B.13
C.23
D.123
参考答案
更多 “ publicclassPet{privateStringname；publicPet（）{System.out.print（1）；}publicPet（Stringname）{System.out.print（2）；}}publicclassDogextendsPet{publicDog（）{System.out.print（4）；}publicDog（Stringname）{super（name）；System.out.print（3）；}}执行newDog（棕熊”）；后程序输出是哪项？（）A.33B.13C.23D.123 ” 相关考题
考题
如下程序的输出结果是______。 include using namespace std; class Pet{ char nam
如下程序的输出结果是______。include＜iostream＞using namespace std；class Pet{char name[10]；public：Pet(char*nanle){strcpy(this-＞name，name)；}const char*getName( )const{return name；}virtual void call( )eonst=0；}；class Dog：public Pet{public：Dog(char*name)：Pet(name){ }void call( )eonst{cout＜＜"汪汪叫"；}}；class Cat：public Pet{public：Cat(char*name)：Pet(name){ }void call( )const{eout＜＜"喵喵叫"；}}；int main( ){Pet*petl=new Dog("哈克")，*pet2=new Cat("吉米")；eout＜＜petl-＞getName( )；petl-＞call( )；eout＜＜endl；cout＜＜pet2-＞getName( )；pet2-＞call( )；eout＜＜endl；return 0；}
考题
publicclassPet{publicvoidspeak（）{System.out.print（Pet”）；}}publicclassCatextendsPet{publicvoidspeak（）{System.out.print（Cat”）；}}publicclassDogextendsPet{publicvoidspeak（）{System.out.print（Dog”）；}}执行代码Pet[]p={newCat（），newDog（），newPet（）}；for（inti=0；i〈p.length；i++）p[i].speak（）；后输出的内容是哪项？（）A.PetPetPetB.CatCatCatC.CatDogPetD.CatDogDog
考题
publicclassEmployee{privateStringname；publicEmployee（Stringname）{this.name=name；}publicvoiddisplay（）{System.out.print（name）；}}publicclassManagerextendsEmployee{privateStringdepartment；publicManager（Stringname，Stringdepartment）{super（name）；this.department=department；}publicvoiddisplay（）{System.out.println（super.display（）+”，”+department）；}}执行语句newManager（smith”，”SALES”）后程序的输出是哪项？（）A.smith，SALESB.null，SALESC.smith，nullD.null，null
考题
publicclassEmployee{privateStringname；publicEmployee（Stringname）{this.name=name；}publicStringgetName（）{returnname；}}publicclassManagerextendsEmployee{privateStringdepartment；publicManager（Stringname，Stringdepartment）{this.department=department；super（name）；（应于上一行掉位置）System.out.println（getName（））；}}Super的位置是否在方法的首行执行语句newManager（smith”，”SALES”）后程序的输出是哪项？（）A.smithB.nullC.SALESD.编译错误
考题
publicclassPet{privateStringname；publicPet（Stringname）{this.name=name；}publicvoidspeak（）{System.out.print（name）；}}publicclassDogextendsPet{publicDog（Stringname）{super（name）；}publicvoidspeak（）{super.speak（）；System.out.print（Dog”）；}}执行代码Petpet=newDog（京巴”）；pet.speak（）；后输出的内容是哪项？（）A.京巴B.京巴DogC.nullD.Dog京巴
考题
publicclassPlant{privateStringname;publicPlant(Stringname){this.name=name;}publicStringgetName(){returnname;}}publicclassTreeextendsPlant{publicvoidgrowFruit(){}publicvoiddropLeaves(){}}Whichistrue?()
A.Thecodewillcompilewithoutchanges.B.ThecodewillcompileifpublicTree（）{Plant（）；}isaddedtotheTreeclass.C.ThecodewillcompileifpublicPlant（）{Tree（）；}isaddedtothePlantclass.D.ThecodewillcompileifpublicPlant（）{this（”fern”）；}isaddedtothePlantclass.E.ThecodewillcompileifpublicPlant（）{Plant（”fern”）；}isaddedtothePlantclass.
考题
有如下程序: include using namespace std; class Pet{ char name[10]; public: Pet(c
有如下程序：include＜iostream＞using namespace std；class Pet{char name[10]；public：Pet(char*name){strcpy(this-＞name，name);}const char*getName()const {return name;}virtual void call()const=0；}；class Dog:public Pet{public：Dog(char*name):Pet(name){}void call()const{cout＜＜"汪汪叫":}}；class Cat:public Pet{public：Cat(char*name):Pet(name){}void call()const{cout＜＜"喵喵叫";}}；int main(){Pet*pet1=new Dog("哈克")，*pet2=new Cat("吉米")；cout＜＜pet1-＞getName()；pet1-＞call()；cout＜＜end1；cout＜＜pet2-＞getName()；pet2-＞call()；cout＜＜end1；return 0；}程序的输出结果是______。
考题
Java代码查错1.abstract class Name {private String name;public abstract boolean isStupidName(String name) {}}大侠们，这有何错误?
考题
interface Playable {void play();}interface Bounceable {void play();}interface Rollable extends Playable, Bounceable {Ball ball = new Ball("PingPang");}class Ball implements Rollable {private String name;public String getName() {return name;}public Ball(String name) {this.name = name;}public void play() {ball = new Ball("Football");System.out.println(ball.getName());}}这个错误不容易发现。
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