Public classTestMain { public static void main(String [ ] args) { Car myCar1, myCar2; Electric Car myElec1, myElec2; myCar1 = new Car( ); myCar2 = new Car("Ford", 1200, "Green"); myElec1 = new ElectricCar( ); myElec2 = new ElectricCar(15); } }
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A: Lets see the solution.
Public classTestMain
{
public static void main(String [ ] args)
{
Car myCar1, myCar2;
Electric Car myElec1, myElec2;
myCar1 = new Car( );
myCar2 = new Car("Ford", 1200, "Green");
myElec1 = new ElectricCar( );
myElec2 = new ElectricCar(15);
}
}
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- public class Stadium extends baseStadium{ public int typeTicket; int floors; int seating; String type; public float ticketPrice; public String leagueName=""; public void SetTecketName(String val) { leagueName=val; } public void setType() { if (typeTicket == 1) { type = "VIP"; } else { type = "Regular"; } } public String getType() { return type; } public void setPrice() { if (typeTicket == 1) { ticketPrice = 250; } else { ticketPrice = 100; } } public void setFloors(int floors) { this.floors = floors; } public int getFloors() { return floors; } public void setSeating(int seating) { this.seating = seating; } public int getSeating() { return seating; } public void printDetails() { System.out.println("Ticket Details:"); System.out.println("Ticket Type:…class Lease{ private String name; private int aptNumber; private double rent; private int term; private static final int FEE = 10; public Lease(){ name = "XXX"; aptNumber = 0; rent = 1000; term = 12; } public void setName(String tenant) { name = tenant; } public void setAptNumber(int apt){ aptNumber = apt; } public void setRent(double monthRent) { rent = monthRent; } public void setTerm(int t){ term = t; } public String getName(){ return name; } public int getAptNumber(){ return aptNumber; } public double getRent(){ return rent; } public int getTerm(){ return term; } public void addPetFee(){ rent = rent + FEE; } } Create a class named TestLease as instructed below: Instantiate four Lease objects in the main()method. Change the aptNumber value for the first object to 20 Change the rent value…class Course { private String courseNumber; private String courseName; private int creditHrs; public Course (String number, String name, int creditHrs){ this.courseNumber = number; this.courseName = name; this.creditHrs = creditHrs; } public String getNumber() { return courseNumber; } public String getName() { return courseName; } public int getCreditHrs() { return creditHrs; } public void setCourseNumber(String courseNumber) { this.courseNumber = courseNumber; } public void setCourseName(String courseName) { this.courseName = courseName; } public void setCreditHrs(int creditHrs) { this.creditHrs = creditHrs; }} class Student { private String firstName; private String lastName; private String gender; private String phoneNumber; private String email; private String jNumber; protected ArrayList<MyCourse> courseList; public String…
- class Course { private String courseNumber; private String courseName; private int creditHrs; public Course (String number, String name, int creditHrs){ this.courseNumber = number; this.courseName = name; this.creditHrs = creditHrs; } public String getNumber() { return courseNumber; } public String getName() { return courseName; } public int getCreditHrs() { return creditHrs; } public void setCourseNumber(String courseNumber) { this.courseNumber = courseNumber; } public void setCourseName(String courseName) { this.courseName = courseName; } public void setCreditHrs(int creditHrs) { this.creditHrs = creditHrs; }}class Student { private String firstName; private String lastName; private String gender; private String phoneNumber; private String email; private String jNumber; protected ArrayList courseList; public String getFullName() {…public class Author2 {3 private String name;4 private int numberOfAwards;5 private boolean guildMember;6 private String[] bestsellers;78 public String Author()9 {10 name = "Grace Random";11 numberOfAwards = 0;12 guildMember = false;13 bestsellers = {"Minority Report", "Ubik", "The Man in the HighCastle"};14 }1516 public void setName(String n)17 {18 name = n;19 }20 public String getName()21 {22 return name;23 }2425 public void winsAPulitzer()26 {27 System.out.println(name + " gave a wonderful speech!");28 }29 } 1. This class includes a constructor that begins on line 8; however, it contains an error. Describe the error. 2. Rewrite the constructor header on line 8 with the error identied in part c of this question corrected. 3. Demonstrate how you might overload the constructor for this class. Write only the header. 4. Write a line of Java code to create an instance (object) of this class. Name it someAuthor. 5. Write a line of code to demonstrate how you would use the someAuthor object…49. Consider the following class definition. public class Cylinder } private double baseRadius; private double height; public Cylinder () baseRadius = 0; height = 0; public Cylinder (double 1, double h) } baseRadius - 1; height = h; { public void set (double r, double h) } baseRadius = r; height = h; { public String toString () } return (baseRadius + It n + height); { public double SurfaceArea () return 2 * 3.14 * baseRadius height; public double volume () } return 3.14 baseRadius * baseRadius * height; { Which of the following statements correctly instantiates the Cylinder object myCylinder? (i) Cylinder mycylinder = new Cylinder (2.5, 7.3) : (ii) class Cylinder myCylinder = new Cylinder (2.5, 7.3); (ii) myCylinder new Cylinder (2.5, 7.3); %3D a. Only (i) b. Only (i) c. Only (iüi) d. Both (ii) and (ii)
- Question 1 public class Flat { private int noOfRooms; private double area; private boolean seaView; public Flat() { noOfRooms = 3; area = 200; seaView = true; } %3D public void setFlat(int n, double a, boolean s) { noOfRooms = n; area = a; seaView = s; } public int getNoOfRooms( ) { return noOfRooms; } public double getArea( ) { return area; } public boolean getSeaView( ) { return seaView; } } Write a static method named findFlats that takes as a parameter an array of type Flat named list. The method should count and return the number of flats that have 3 or more rooms and with a sea view. The method prototype is: public static int findFlats (Flat[] list); Note: assume the array is already declared, populated with data in the main method and ready to be used.Based on Figure 3, create a class named Child that inherits the Father class. Declare an instance name location (String) for class Child. [3 marks]8. OOPS Theory #6 public class Car { public void horn() { System.out.println("Horn horn"); } } public class Ferrari extends Car { public void horn() { System.out.println("Ferarriiiiii"); } } public static void main(String[] args) { Ferrari ferrari = new Car(); ferrari.horn(); } Pick ONE option Horn horn Ferarriiii Cannot compile Runtime exception Clear Selection 9. OOPS Theory #7 In Java, we can achieve the abstraction by creating the blueprint of an object and only have abstract methods. What do we call this? Pick ONE option Interface Encapsulation Instance Protected Clear Selection
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