Java code ASAP 6:21 AM Sun 17 OctAL 37% |Ims.uhb.edu.sa A – Private2 of 2جاممة حفر الباطنUniversity of Hafr Al BatinComputer Science and Engineering DepartmentA Car class which is a subclass of FuelVehicle that has:one additional private instance variable nbSeatsone constructor to initialize the instance variablesoverrides getCost method by adding nbseats*baseFee to mileageFeesасcessorsA Truck class which is a subclass of FuelVehicle that has:one private instance variable capacityone constructor to initialize the instance variablesoverrides getCost method by adding baseFee*capacity to mileageFeesасcessorsA Bicycle class that extends RentedVehicle that has:- one additional private instance variable nbDays indicating the number of days it is rented.- one constructor to initialize the instance variables- overrides getCost method to return baseFee * nbDays- accessorsImplement all five classes with their accessor and mutator methods.Write an application class that generates 6 objects randomly from either a Car, or a Truck, or aBicycle class. You need to generate an integer random number between 1 and 3 and based on itsvalue you generate your object from one of the three classes. Your generated objects will bestored in a RentedVehicle array.Write a static method in your test class that takes an array of RentedVehicles and prints thefollowing for each element of the array:- if the object is a car print its name and the number of seats and cost.- if it is a Truck, print its name and capacity and cost.- if it is a Bicycle, print its name and how many days it is rented and cost.Test your class with appropriate data. 6:21 AM Sun 17 OctC 38%•..Ims.uhb.edu.sa A – Private1 of 2Write Java code for the following problem.Consider the following inheritance hierarchy.RentedVehicleFuelVehicleBicycleCarTruckA class RentedVehicle that has:One private instance variable baseFee of type doubleOne constructor to initialize the instance variableOne instance method getCost () that returns the base feeAccessor methods for the instance variablesA subclass FuelVehicle that has:one additional private instance variable nbKms indicating the total number of kilometerstraveled.one constructor to initialize the instance variables.one instance method getMileageFees to return the fees due to mileage based on the following:If nbKms < 100 mileagefees=0.2*nbkmsIf 100<=nbKms<= 400 mileagefees=0.3*nbkmsIf nbKms>400 mileagefees=0.3 times 400 plus 0.5 times the extra kilometers above 400.accessor methodsجاممة حفر الباطنUniversity of Hafr Al BatinComputer Science and Engineering DepartmentA Car class which is a subclass of FuelVehicle that has:one additional private instance variable nbSeats-one constructor to initialize the instance variablesoverrides getCost method by adding nbseats*baseFee to mileageFeesасcessorsA Truck class which is a subclass of FuelVehicle that has:one private instance variable capacityone constructor to initialize the instance variablesoverrides getCost method by adding baseFee*capacity to mileageFeesaccessorsA Bicycle class that extends RentedVehicle that has:- one additional private instance variable nbDays indicating the number of days it is rented.- one constructor to initiaize une nstance varrabies

public class RentedVehicle { //declaring insatnce variable private double basefee; //constructor…

Answered: A Car class which is a subclass of…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Consider the following inheritance hierarchy: class A{ protected: int x, y; public: int z; }; class B: private A{ private: int a, b, c; public: void set(int x, int y, int z, int a, int b, int c); }; Int main(){ Aobja; B objb; } questions:a) How many data members does B have? Write their names. b) How many of B’s data members are visible in B? Write down their names. c) Which members of B are accessible in main()? How will they be accessed? d) If the protected Access specifier in A is changed to public, then how many members of B will be accessed in main() and how? e) Define the function set() without changing its signature as given above. f) Write a default constructor for the class B that does not have an empty parameter list. g) If the data members of A become private, then how they be initialized? h) Add a static data member in class B. Can we use this pointer with static members? If yes how?
Consider the following inheritance hierarchy: class A{ protected: int x, y; public: int z; }; class B: private A{ private: int a, b, c; public: void set(int x, int y, int z, int a, int b, int c); }; Int main(){ Aobja; B objb; } a) If the protected Access specifier in A is changed to public, then how many members of B will be accessed in main() and how? b) Define the function set() without changing its signature as given above. c) Write a default constructor for the class B that does not have an empty parameter list. d) If the data members of A become private, then how they be initialized? e) Add a static data member in class B. Can we use this pointer with static members? If yes how?
(Java) Q 1,2 ANSWER BOTH PART 1 AND 2!!! Explain the answer step-by-step and include verbal explanation. Thank you! PART 1: 1. Given the below Car class, write a child class of Car named Tesla. The Tesla class has an additional private boolean variable named autoPilotEnabled. It also has two constructors - a default constructor and a three argument constructor. Both constructors call the appropriate constructors of the parent class. Tesla also has a getter and setter for the autoPilotEnabled variable. Finally, it has a toString method that calls the toString of Car, as well as concatenating the autoPilotEnabled variable. public class Car { private String make;private String model;public Car() {make = "Make unknown";model = "Model unknown";}public Car(String make, String model) {this.make = make;this.model = model;} public String getMake() {return make;}public String getModel() {return model;}public void setMake(String make) {this.make = make;}public void setModel(String model)…
[JAVA]Please create a zombie class with the following directions in the problem. The screenshot is provided.
make this code an object-oriented programming: from tkinter import *def callback(r,c):global playerif player == 'X' and states[r][c] == 0 and stop_game==False:b[r][c].configure(text='X', fg='blue', bg='white')states[r][c] = 'X'player = 'O'if player == 'O' and states[r][c] == 0 and stop_game==False:b[r][c].configure(text='O', fg='orange', bg='black')states[r][c] = 'O'player = 'X'check_for_winner()def check_for_winner():global stop_gamefor i in range(3):if states[i][0]==states[i][1]==states[i][2]!=0:b[i][0].configure(bg='grey')b[i][1].configure(bg='grey')b[i][2].configure(bg='grey')stop_game = Truefor i in range(3):if states[0][i]==states[1][i]==states[2][i]!=0:b[0][i].configure(bg='grey')b[1][i].configure(bg='grey')b[2][i].configure(bg='grey')stop_game = Trueif states[0][0]==states[1][1]==states[2][2]!=0:b[0][0].configure(bg='grey')b[1][1].configure(bg='grey')b[2][2].configure(bg='grey')stop_game = Trueif…
[21:46, 2020年12月8日] Antoni: The following class Pizza has incomplete codes. Write setter and getter methods for all instance variables of this class. In addition, complete the missing lines of codes for the given default constructor method and isLargePizza () method.[21:47, 2020年12月8日] Antoni: class Pizza { private string name; private double diameter; public Pizza () { //Missing lines of codes to be completed by the student } public boolean isLargePizza() { //Missing lines of codes to be completed by the student } //Missing lines of codes to be completed by the student }//end class definition Hint: When the diameter of a pizza is more than 20cm, then it is considered to be a Large Pizza. The method isLargePizza () has to return a boolean value indicating whether the Pizza object is a large pizza or not. Note: You must add required member functions or data members/variables in your program to complete its execution.
Example Code Ch 09-6Assume that Student, Employee and Retired are all extended classes of Person, and all fourclasses have different implementations of the method getMoney. Consider the following code where... indicates the required parameters for the constructors:Person p = new Person(...);int m1 = p.getMoney(); // assignment 1p = new Student(...);int m2 = p.getMoney(); // assignment 2if (m2 < 100000)p = new Employee(...);else if (m1 > 50000)p = new Retired(...);int m3 = p.getMoney(); // assignment 323. Refer to Example Code Ch 09-6: The reference to getMoney() in assignment 1 is to the classa. Personb. Studentc. Employeed. Retirede. This cannot be determined by examining the code
Do the following program in Java Eclipse. Java Class that can be used to create a Fruit object as described below: A fruit has - a: - Date of Harvest -Color -Weight -Number of seeds a. Add all instance variables. b. The class must have getters and setters for all instance variables. c. The class must have two constructors, a no-args and a constructor that receives input for each instance variables. d. The parent class is abstract. e. its 1 abstract method and has toString() method f. its 2 children (concrete) also have toString() methods.
Assume that we have four classes: Person, Teacher, Student, and PhDStudent. Teacherand Student are both subclasses of Person. PhDStudent is a subclass of Student.A.Which of the following assignments are legal, and why or why not?Person p1 = new Student();Person p2 = new PhDStudent();PhDStudent phd1 = new Student();Teacher t1 = new Person();Student s1 = new PhDStudent();Suppose that we have the following legal declarations and assignments:Person p1 = new Person();Person p2 = new Person();PhDStudent phd1 = new PhDStudent();Teacher t1 = new Teacher();Student s1 = new Student();B.Based on those just mentioned, which of the following assignments arelegal, and why or why not?s1 = p1;s1 = p2;p1 = s1;t1 = s1;s1 = phd1;phd1 = s1;
2) Consider the following class class Department { private: string name; const long locationNo; const longdeptId; intNumOfEmployees; static intnextDeptNo; static intnextLocationNo; public: Department( ); Department(string theName, totalEmps) void Print ( ) const; } Initialize both the values of nextDeptNo and nextLocationNo to 10000 Implement the default constructor to set the name to “Unknown”, locationNo to the current value of nextLocationNo, deptId to the current value of nextDeptNo and NumOfEmployees to zero. It should also increment the value of all static attributes by 1. Implement the other constructor to set the name and NumOfEmployees to the values that are passed to the contractor. The values of the locationNo and deptId should be assigned to the current values of nextLocationNo and nextDeptNo, respectively. This constructor should also increment the values of all static attributes by 1. The print function should print all values of all attributes (regular,…
Implement the following concepts by constructing suitable classes in Java -a. Constructorsb. Constructor Overloadingc. Function Overloadingd. Function Overridinge. InheritanceCreate a class Person - Field - Name, Birthdate, Contact no and Mail idMethods - Constructor, accept and displayClass Employee - Inherits the Person classFields : Emp ID, grade, basic salary, Gross Salary, HRA (House Rent Allowance), TA (TravelingAllowance), DA (Dearness Allowance)Given:Grade Basic TAA 8000 2000B 7000 1500C 6000 1000D 5000 500Calculate Gross Salary :Gross Salary = Basic + HRA (20% of Basic) + DA (50% Basic) + TAe.g if Basic = 8000TA = 2000HRA = 20% of 8000 = 1600DA = 50 % of 8000 = 4000Gross = 8000 + 2000 + 1600 + 4000 = 15600Optional : you can implement increment function in which you can change grade of an employee andrecalculate salary with new grade
highlight the correct answer and provide proper explanation 6. A class should take any number as an argument but no other data types. Which code does this? a. public class xyz <T> b. public class xyz <T extends Number> c. public class xyz <T implements Number> d. public class xyz <T extends Integer> 7. Log4j.properties is set to 'warn'. Which would show in the log file? a. Info b. Debug c. Trace d. Error 8. Which would lock an object so that it could only be used by a single thread? a. join() b. yield() c. synchronized() d. start() 9. Which of the following is an example of a dependency between 2 objects? a. Vehicle and car b. Person and employee c. Pilot and plane d. Generic database reader and Oracle database reader

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A Car class which is a subclass of FuelVehicle that has: one additional private instance variable nbSeats one constructor to initialize the instance variables overrides getCost method by adding nbseats*baseFee to mileageFees accessors