module03-面向?qū)ο缶幊?資料下載頁
2025-08-16 23:47本頁面
【正文】 eGo extends Car {2. public MeGo(String vin) {3. = 3。4. }5. }What two must the programmer do to correct the pilation errors?(Choose two.)A. insert a call to this() in the Car constructorB. insert a call to this() in the MeGo constructorC. insert a call to super() in the MeGo constructorD. insert a call to super(vin) in the MeGo constructorE. change the wheelCount variable in Car to protectedF. change line 3 in the MeGo class to = 3。Answer: DEQuestion 26Click the Exhibit button.1. public class Employee {2. String name。3. double baseSalary。4. Employee(String name, double baseSalary) {5. = name。6. = baseSalary。7. }8. }And:1. public class Salesperson extends Employee {2. double mission。3. public Salesperson(String name, double baseSalary,4. double mission) {5. // insert code here6. }7. }Which code, inserted at line 7, pletes the Salesperson constructor?A. = mission。B. superb()。mission = mission。C. = mission。superb()。Copyright Tarena Corporation, rights reservedD. super(name, baseSalary)。 = mission。E. super()。 = mission。F. = mission。super(name, baseSalary)。Answer: DQuestion 27Which Man class properly represents the relationship “ Man has a bestfriend who is a Dog ” ?A. class Man extends Dog { }B. class Man implements Dog { }C. class Man { private BestFriend dog。 }D. class Man { private Dog bestFriend。 }E. class Man { private DogbestFriend }F. class Man { private BestFrienddog }Answer: DQuestion 28Which four are true? (Choose four.)A. Hasa relationships should never be encapsulated.B. Hasa relationships should be implemented using inheritance.C. Hasa relationships can be implemented using instance variables.D. Isa relationships can be implemented using the extends keyword.E. Isa relationships can be implemented using the implementskeyword.F. The relationship between Movie and Actress is an example of an isarelationship.G. An array or a collection can be used to implement a onetomanyhasa relationship.Answer: CDEGQuestion 29Which two are true about hasa and isa relationships? (Choose two.)A. Inheritance represents an isa relationship.B. Inheritance represents a hasa relationship.C. Interfaces must be used when creating a hasa relationship.D. Instance variables can be used when creating a hasa relationship.Answer: ADCopyright Tarena Corporation, rights reservedQuestion 30Given: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? (Choose three.)A. Cat isa AnimalB. Cat isa JumperC. Dog isa AnimalD. Dog isa JumperE. Cat hasa AnimalF. Beagle hasa TailG. Beagle hasa JumperAnswer: BCFQuestion 31Given:1. package geometry。2. public class Hypotenuse {3. public InnerTriangle it = new InnerTriangle()。4. class InnerTriangle {5. public int base。6. public int height。7. }8. }Which is true about the class of an object that can reference thevariable base?A. It can be any class.B. No class has access to base.C. The class must belong to the geometry package.D. The class must be a subclass of the class Hypotenuse.Answer: CCopyright Tarena Corporation, rights reserved二、 拖拽題： Question 1 :Question 2:Copyright Tarena Corporation, rights reservedQuestion 3:Question 4:
黨政相關(guān)相關(guān)推薦
鄂ICP備17016276號-1