编写 Animal 类和 Dog 类; 根据用户输入的数值,创建相应个数的 Animal 对象和 Dog 对象

编写 Animal 类和 Dog 类; 根据用户输入的数值,创建相应个数的 Animal 对象和 Dog 对象


参考答案和解析
Dog d = (Dog)new Animal();

相关考题:

在Java中,类Animal中的方法printA()定义如下:publicvoidprintA(){inta=10;intresult=10%3;System.out.println(result);}在类Dog中方法printA()定义如下:publicvoidprintA(){inta=10;System.out.println(a/3);}Dog类的定义如下:classDogextendsAnimal{…}.Animalanimal=newDog();animal.printA();以上语句输出为()。A.0B.1C.2D.3E.3.3333

有如下程序: include using namespaee std;class Animal{ public: virtual char*g 有如下程序:include<iostream>using namespaee std;c lass Animal{public:virtual char*getType( )const{return"Animal";}virtual char*getVoice( )const{return"Voice";}};class Dog:public Animal{public:char*getType( )const{return"Dog";}char*getVoice( )eonst{return"Woof";}};void type(AnimalA) {cout<<a.getType( );}void speak(Animal A) {eout<<a.getVoice( );}int main( ){Dog d;type(D) ;cout<<"speak";speak(D) ;cout return 0;}程序的输出结果是______。

( 12 )有如下程序:#include iostreamusing namespace stdclass Animal{public:virtual char* getType () const { return "Animal" ; }virtual char* getVoice () const { return "Voice" ; }};Class Dog : public Animal {public:char* getType ( ) const {return "Dog" ; }char* getVoice ( ) const {return "Woof"}};void type ( Animal a ) {couta.getType ( ) ; }void speak ( Animal a ) {couta.getVoice ( ) ; }int main ( ) {Dog d; type ( d ) ; cout" speak" ; speak ( d ) ; coutendi;return 0;}运行时的输出结果是【 12 】 。

We can infer from the third paragraph that .[A] rich people are more interested in cloning humans than animals[B] cloning of animal pets is becoming a prosperous industry[C] there is no distinction between a cloned and a natural dog[D] Missy’s master pays a lot in a hope to revive the dog

Hyponymy is a relation of inclusion. Tiger, lion and dog are hyponyms of the word animal.()

若Animal是Cat,Dog的父类,则下列选项中,正确的是()。 A.Animalanimal=newCat()B.Catcat=(Cat)newDog()C.Catcat=(Cat)newAnimal()D.Animalanimal=newDog()

编写接口和实现类。动物(Animal)能够动,鸟(Bird)会飞,老虎(Tiger)会跑,(Fish)会游泳。然后测试运行结果。

dog是animal的子类,下面代码错误的是_________。 A.Objecto=newDog();B.Animala=newDog();C.Objectd=(Dog)newAnimal()D.Animala=(Animal)newDog();

有如下程序:ncludeiostreamusing namespace std;class Animal{public:virtual char*getType()const{return“Animal”;}virtual char*getVoice()const{return“Voice”;}};class Dog:public Animal{public:char*getType()const{rgturn“Dog”;}char*getVoice()const{retum“Woof”;}};void type(AnimalA){couta.getType();}void speak(AnimalA){couta.getVoice();}int main(){Dog d.type(D);tout“speak”;speak(D);coutendl;return 0;}运行时的输出结果是【 】

Animal is a super-ordinate term, while cow, horse, pig, dog, cat, etc. are().

词的关系分类主要有:对比,如wet-dry(湿-干);相似,如blossom-flower(开花-花);从属,如animal-dog(动物-狗);并列,如apple-peach(苹果-桃)。

classCatextendsAnimal{}对于下述代码说法正确的是()A、Cat是Animal的子类B、Animal是Cat的子类C、Cat是Animal的超类D、Animal一定是抽象类

在Java中, 类Animal中的方法printA()定义如下: publicvoidprintA(){ inta=10; intresult=10%3; System.out.println(result);} 在类Dog中方法printA()定义如下: publicvoidprintA(){ inta=10; System.out.println(a/3);} Dog类的定义如下: classDogextendsAnimal{…}.Animalanimal=newDog();animal.printA(); 以上语句输出为()。A、0B、1C、2D、3E、3.3333

10. interface Jumper { public void jump(); }  ......  20. class Animal {}  ......  30. class Dog extends Animal { 31. Tail tail; 32. }  ......  40. class Beagle extends Dog implements Jumper {  41. public void jump() { }  42. }  .......  50. class Cat implements Jumper {  51. public void jump() { }  52. }  Which three are true?()A、 Cat is-a AnimalB、 Cat is-a JumperC、 Dog is-a AnimalD、 Dog is-a JumperE、 Cat has-a AnimalF、 Beagle has-a TailG、 Beagle has-a Jumper

class Dog { }  class Harrier extends Dog { }  class DogTest {  public static void main(String [] args) {  Dog d1 = new Dog();  Harrier h1 = new Harrier();  Dog d2 = h1;  Harrier h2 = (Harrier) d2;  Harrier h3 = d2;  }  }  下面哪一项是正确的?() A、编译失败B、2个Dog对象被创建C、2个Harrier对象被创建D、3个Harrier对象被创建

现有:  class Dog{ }  class Harrier extends Dog  { }       class DogTest{   public  static void main (String  []  args) {      Dog dl=new Dog();      Harrier hl=new Harrier();      Dog d2=hl;   Harrier h2=  (Harrier) d2;      Harrier h3=d2;     }      }  下面哪一项是正确的?()    A、2个Dog对象被创建B、2个Harrier对象被创建C、3个Harrier对象被创建D、编译失败

publicabstractclassAnimal{publicabstractvoidEat();publicvoidSleep(){}}以下关于C#代码地描述正确的是()。A、该段代码正确B、代码错误〃因为类中存在非抽象方法C、代码错误〃因为类中方法没有实现D、通过代码Animalan=newAnimal;可以创建一个Animal对象

11. class Animal { public String noise() { return “peep”; } }  12. class Dog extends Animal {  13. public String noise() { return “bark”; }  14. }  15. class Cat extends Animal {  16. public String noise() { return “meow”; }  17. }  .....  30. Animal animal = new Dog();  31. Cat cat = (Cat)animal;  32. System.out.printIn(cat.noise());  What is the result?() A、 peepB、 barkC、 meowD、 Compilation fails.E、 An exception is thrown at runtime.

多选题Given: 10. interface Jumper { public void jump(); } ...   20. class Animal {} ...   30. class Dog extends Animal {   31. Tail tail;   32. }   ...   40. class Beagle extends Dog implements Jumper{   41. public void jump() {}  42. }   ...   50. class Cat implements Jumper{   51. public void jump() {}   52. }. Which three are true?()ACat is-a JumperBCat is-a AnimalCDog is-a JumperDDog is-a AnimalEBeagle has-a JumperFCat has-a AnimalGBeagle has-a Tail

单选题class Dog { }  class Harrier extends Dog { }  class DogTest {  public static void main(String [] args) {  Dog d1 = new Dog();  Harrier h1 = new Harrier();  Dog d2 = h1;  Harrier h2 = (Harrier) d2;  Harrier h3 = d2;  }  }  下面哪一项是正确的?()A编译失败B2个Dog对象被创建C2个Harrier对象被创建D3个Harrier对象被创建

单选题现有:  class Dog{ }  class Harrier extends Dog  { }       class DogTest{   public  static void main (String  []  args) {      Dog dl=new Dog();      Harrier hl=new Harrier();      Dog d2=hl;   Harrier h2=  (Harrier) d2;      Harrier h3=d2;     }      }  下面哪一项是正确的?()A2个Dog对象被创建B2个Harrier对象被创建C3个Harrier对象被创建D编译失败

单选题11. class Animal { public String noise() { return “peep”; } }  12. class Dog extends Animal {  13. public String noise() { return “bark”; }  14. }  15. class Cat extends Animal {  16. public String noise() { return “meow”; }  17. }  .....  30. Animal animal = new Dog();  31. Cat cat = (Cat)animal;  32. System.out.printIn(cat.noise());  What is the result?()A peepB barkC meowD Compilation fails.E An exception is thrown at runtime.

单选题在Java中,类Animal中的方法printA()定义如下:  public void printA() {    Int a=10;    Int result =10%3;    System.out.println(result); }  在类Dog中方法printA()定义如下:  public void printA() {   Int a=10;    System.out.println(a/3); }  Dog类的定义如下:  Class Dog extends Animal{…}.  Animal animal=new Dog();  animal.printA();  以上语句输出结果为()。A 0B 1C 2D3E3.3333

填空题Animal is a super-ordinate term, while cow, horse, pig, dog, cat, etc. are().

单选题publicabstractclassAnimal{publicabstractvoidEat();publicvoidSleep(){}}以下关于C#代码地描述正确的是()。A该段代码正确B代码错误〃因为类中存在非抽象方法C代码错误〃因为类中方法没有实现D通过代码Animalan=newAnimal;可以创建一个Animal对象

多选题10. interface Jumper { public void jump(); }  ......  20. class Animal {}  ......  30. class Dog extends Animal { 31. Tail tail; 32. }  ......  40. class Beagle extends Dog implements Jumper {  41. public void jump() { }  42. }  .......  50. class Cat implements Jumper {  51. public void jump() { }  52. }  Which three are true?()ACat is-a AnimalBCat is-a JumperCDog is-a AnimalDDog is-a JumperECat has-a AnimalFBeagle has-a TailGBeagle has-a Jumper

单选题1. class Animal { Animal getOne() { return new Animal(); } }  2. class Dog extends Animal {  3. // insert code here   4. }  5.  6. class AnimalTest {  7. public static void main(String [] args) {  8. Animal [] animal = { new Animal(), new Dog() } ;  9. for( Animal a : animal) {  10. Animal x = a.getOne();  11. }  12. }  13. }  和代码:  3a. Dog getOne() {  return new Dog();  }  3b. Animal getOne() {  return new Dog();  }  第 3 行中插入的哪项将编译且运行无异常?()A3a行B3b行C3a行或3b行D既非3a,也非3b

单选题class Animal{ Animal getOne(){return new Animal();}}   class Dog extends Animal{   //insert code here   }   class AnimalTest{   public static void main(String[] args){   Animal[] animal={ new Animal(), new Dog()};   for(Animal a:animal){   Animal x= a.getOne();   }   }   }   和代码:   3a.Dog getOne() { return new Dog();}   3b.Animal getOne() { return new Dog();}   第3行中插入的哪项编译且运行无异常?A3a行或3b行B既非3a,也非3bC3a行D3b行