public class Product { class Food extends Product { class Cheese extends Food { Considering the above classes, which of the following java statements is valid? O A. Cheese cl = new Product(); %3D O B. Food f1 = new Cheese(); OC. Product p2 Cheese c2 new Food (); (Cheese) p2; new Food (); %3D O D. Cheese cl %3D
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- Class Activity 1 :: Constructor Write a Java program to calculate salary of an employee in the company. 1. Member variables are: Employee No, Employee_name, Basic salary, Dearness Allowance (DA), House Rent allowance (HRA),and Gross_salary. 2. Member Methods are: • To calculate and return Dearness Allowance (DA) - (DA - 30% of basic salary), • To calculate and return House Rent Allowance (HRA) (35% of basic salary incase the basic salary is > 400, otherwise it is 30% of basic salary), • To calculate and return Gross salary (Basic + DA+ HRA), 3. The program should use the parametrized constructor to initialize the member variables of the class. 4. The program should print the Employee_No, Employee_name, Basicsalary, Dearness, Allowance (DA), House rent allowance (HRA),and Gross_salary. Chapter 7 ITSE203-Object Oriented Programming (Java) Object Oriented Programming (OOP) ConceptsC++ Programming Assignment 6 Dynamic Pets The objective of this lab is to demonstrate dynamic allocation and deallocation of memory. Instructions: Write a class called Pet that contains an animal’s name, type, and weight. Include a default constructor and destructor for the class. The constructor should print out the following message: “Creating a new pet”. The destructor should print out the following message: “In the Pet destructor.” Include appropriate get/set functions for the class. In main(), prompt the user to enter the number of pets in his or her household. Dynamically create a built-in array based on this number (not a vector or object of the array class) to hold pointers to Pet objects. Construct a loop in main() that executes once for each of the number of pets that the user indicated. Within this loop, ask the user to enter the name and type of pet. Using a random number generator, generate a weight between 1-100 pounds. Seed this random number generator with 100.…Each of the following class declarations or programs contain errors. Find as many as possible. 73. class Circle: { private double centerX; double centerY; double radius; public setCenter(double, double); setRadius(double); } 74. #include using namespace std; Class Moon; { Private; double earthWeight; double moonWeight; Public; moonWeight(double ew); { earthWeight = ew; moonWeight = earthWeight / 6; } double getMoonWeight(); { return moonWeight; } }
- #include #include using namespace std; class Painting { public: //define the constructor }; int main() { string name; cin >> name; Painting painting(name); return 0; }Problem: Employee and ProductionWorker Classes Write a python class named ProductionWorker that is a subclass of the Employee class. The ProductionWorker class should keep data attributes for the following information: • Shift number (an integer, such as 1, 2, or 3)• Hourly pay rateThe workday is divided into two shifts: day and night. The shift attribute will hold an integer value representing the shift that the employee works. The day shift is shift 1 and the night shift is shift 2. Write the appropriate accessor and mutator methods for this class. Once you have written the class, write a program that creates an object of the ProductionWorker class, and prompts the user to enter data for each of the object’s data attributes. Store the data in the object, then use the object’s accessor methods to retrieve it and display it on the screen Note: The program should be written in python. Sample Input/Output: Enter the name: Ahmed Al-AliEnter the ID number: 12345Enter the department:…T/F Every class definition must include a constructor
- The following class definitions and function definitions should be used to help you finish the exam. train.h: car.h: #ifndef CAR_H #define CAR_H using namespace std; class Car #include "car.h" using namespace std; #ifndef TRAIN_H #define TRAIN_H class Train { private: Car* tHead; Car* tTail; public: Train(); -Train(); void addcarBack(Car *); void deleteFirstcar(); void removeFirstcaróftype(const string &); { private: string name; double maxSpeed; public: Car* nextcar; public: car(); Car(string); double getMaxspeed () const; string getName() const; void setName(const string &); }; #endif // Display list car by car void display() const; }; #endif Part of train.cpp: // addcarBack logic: if (traincarsHead == 0) { traincarsHead = toAdd; traincarsTail = toAdd; else { traincarstail->nextcar = toAdd; traincarsTail = toAdd;C# problem when printing Weigh no value shows up code public class HealthProfile{private String _FirstName;private String _LastName;private int _BirthYear;private double _Height;private double _Weigth;private int _CurrentYear;public HealthProfile(string firstName, string lastName, int birthYear, double height, double weigth, int currentYear){_FirstName = firstName;_LastName = lastName;_BirthYear = birthYear;_Height = height;_Weigth = weight;_CurrentYear = currentYear;}public string firstName { get; set; }public string lastName { get; set; }public int birthYear { get; set; }public int height { get; set; }public double weight { get; set; }public int currentYear { get; set; }public int Person_Age{get { return _CurrentYear - _BirthYear; }}public double Height{get { return _Height; }}public double Weight{get { return Weight; }}public int Max_Heart_Rate{get { return 220 - Person_Age; }}public double Min_Target_Heart_Rate{get { return Max_Heart_Rate * 0.65; }}public double…T/F A method defined in a class can access the class' instance data without needing to pass them as parameters or declare them as local variables.
- True or False It is legal to write a class without any constructors.The following declaration, program, and program segment has errors. Locate as many as you can. #include <iostream> using namespace std; Class Moon;{ Private; double earthWeight; double moonWeight; Public; moonWeight(double ew);// Constructor{ earthWeight = ew; moonWeight = earthWeight / 6; } double getMoonWeight();{ return moonWeight; } }ngineering Computer ScienceQ&A Libraryin c++ Create a class time24, each object is a value represented the time of day in the form hours, minutes and seconds. Provide a constructor that enables an object of this class to be initialized when it is instantiated. The constructor should contain default values in case no initializes are provided. Provide Public member functions for each of the following operations: set the time, print the time, increment the time by one second, compare two times for equality, increment the time by one hour, determine if one time is “less than” (comes before) another time, and final print the time in format 12 hours. Include any additional operations that you think would be useful for your class. Design, implement, and test your class. in c++ Create a class time24, each object is a value represented the time of day in the form hours, minutes and seconds. Provide a constructor that enables an object of this class to be initialized when it is…