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- In the following there are two classes, Employee and Manager. Manager is a subclass of Employee. The implementation of Employee class is given (Note: no getter methods are provided, so you are not able to access instance variables through getter methods in the subclass). The skeleton of the Manager class definition is given. Complete the constructor method, and the toString method for the subclass (see the details below). public class Employee { private String name; private double salary; // Make an employee with a given name and salary. public Employee(String aName, double aSalary) { name = aName; salary = aSalary; } // Provide a string description of an employee. public String toString() { return "Name: " + name + "\tSalary: " + salary; } } public class Manager extends Employee { private String department; // Make a manager with a given name, salary, and department. public Manager(String name, double salary, String department) { // put your code below } // Provide a string…Make a class Person, with instance variable name, age, and gender. Make a class Employee inheritfrom Person, with extra data for salary, and hiring date. Make another class Student inherit from Person,with data for program name, level (undergraduate/graduate), and program year. Supply required methods forthe superclass and the subclasses. Make a subclass Manager from Employee, with bonus salary, andoverride the corresponding method(s). Provide toString method for the Employee class and its subclass,Manager, such that it returns employee name, type of the employment, and salary. For instance if you createan object, manager1, from Manager class, with name=”John Smith” and annual salary of $125,000 and bonusweekly bonus of $200, and then write a print statement like System.out.println(manager1); , the output willbe:John Smith, Manager, Salary = $125,000/year, Weekly bonus = $200If class A is a subclass of class B, then A has access to all of B's instance variables, including private ones. True False
- Consider the definition of the following class: public class CC { private int u; private int v; private double w; public CC( ) //Line 1 {…} public CC(int a) //Line 2 {…} public CC(int a, int b) //Line 3 {…} public CC(int a, int b, double d) //Line 4 {…} A. Give the line number containing the constructor that is executed in each of the following declarations: (i) CC one = new CC( ); _________________ (ii) CC two = new CC(5, 6); _________________ (iii) CC three = new CC(2, 8, 3.5); _________________ B. Write the definition of the constructor in Line 1 so that the instance variables are initialized to 0. C.Write the definition of the constructor in Line 4 so that the instance variables u, v, and w are initialized according to the values of the parameters a, b, and d,…Create a program that has the following classes: Point - Just like in the lecture, with attributes x and y set to 0 by default. Circle - Contains two attributes, center and radius. center is of type Point defined above (initialize a Point instance for this), while radius is set to 0 by default. The program must have the function point_in_circle(c, p) where c is a Circle and p is a Point. The function returns True if the point is within the circle, and False otherwise. You may use the math module (and nothing else) if necessary. You may also create other functions that can help you code the main function much easier. Example usage # Initialize a circle with center at (0, 0) and radius 1 (unit circle). c = Circle() c.center.x, c.center.y, c.radius = 0, 0, 1 # Initialize a point located at (1, 1) p = Point() p.x, p.y = 1, 1 # This returns False since (1, 1) is outside the circle point_in_circle(c, p)Define a class named Doctor whose objects are records for a clinic’s doctors. Derive this class from the class Person given in Listing 8.1. A Doctor record has the doctor’s name—defined in the class Person—a specialty as a string (for example Pediatrician, Obstetrician, General Practitioner, and so on), and an office-visit fee (use the type double). Give your class a reasonable complement of constructors and accessor methods, and an equals method as well. Write a driver program to test all yourmethods.
- Design and implement a class called Car that contains instance data that represents the make, model, and year of the car (as a String, String and int value respectively). Define the Car constructor to initialize these values (in that order). Include getter and setter methods for all instance data, and a toString method that returns a one-line description of the car of the form make-model (year)for example:Ford-Thunderbird (1955)Part (1) Define a class with the following specification:a. Create a class called Employee that has four instance variables – a (String) first name, a (double) payRate, a(double) normalHours, and a (double) extraHours.b. Make the instance variable payRate private and provide a mutator method (set) and an accessor method(get) to access this variable. In set method, if the supplied pay rate (parameter) is negative print an invalidmessage and do not change the instance variable payRate.c. A method calcPay() to calculate the employee pay by multiplying payRate by normalHours added to it the payfor extraHours. For every extra hour the pay rate is doubled. This method must return the pay as a result.d. A method print() that displays the normal and extra working hours and the calculated pay amount formattedto two decimal places as shown below.Sample Output:Employee Name: AhmedNormal Hours Worked: 140.00Extra Hours Worked: 20.00Hourly Rate: $ 2.50Pay Amount: $ 450.00 Part (2) Write a Java…Kindly Give me (OOP) C++ codes for the following question. Question: Consider the following class definition:public class date { private int day; // from 1 to 31 private int month; // from 1 to 12 private int year; // from 2000 upwards public void advance (); // move to next day }; A) Implement a constructor that initializes new objects of date class to be set to the 1st of January 2000. B) Implement setters for day, month, and year. C) Implement the advance method, which moves to the next day, ensuring that all data members are updated appropriately.
- Answer the given question with a proper explanation and step-by-step solution. C++ Virtual Methods Create the following 3 classes: 1. AppWindow class, containing: - A protected instance of a rectangle class Rect defining the AppWindow's position (x,y) and size (w,h). (You may use the Rect class you developed in the previous lab. In main(), the width and height are assumed to be public and called "w" and "h".) - The following constructors to initialize the dimensions: AppWindow(); // initialize member rect's dimensions to 0AppWindow( float x, float y, float w, float h ); // initialize member rect's dimensions with the 4 floatsAppWindow( const Rect& r ); // initialize member rect's dimensions with r's dimensions - A method to retrieve the member rectangle: const Rect& get_rect(); - A virtual method called resize(). When this method is called, your implementation is supposed to change the dimensions of the internal rectangle of the window. virtual void resize( int w, int h ); 2.…Write a class Point with instance variables as: xCoordinate(int) and yCoordinate(int). Write public instance methods (getters & setters) for each instance variable. Now, write a class Circle with private instance variables as radius and Pi (value is 3.14). Write public setter, getter for radius, Area method for calculating Area, Draw method for radius. Formula for calculating area=pi*r^2 Formula for calculating radius= sqrt (xCordinate^2+yCordinate^2) Extend a Circle class from Point class such as Class Circle extends Point Write a Default constructor in Circle class that sets radius, xCoordinate & yCoordinate to some default value e.g. -1; Write a Parameterized constructor in Circle class which takes xCoordinate, yCoordinate and radius as a parameter. E.g. Circle (int xCoordinate, int yCoordinate, double radius) { this.xCoordinate= xCoordinate; this.yCoordinate= yCoordinate;…Given the following Imagine that is attached, select that all apply A. If the Other class extends the Base class then the method guessNumber() in Other overloads the method guessNumber in Base B. If the Other class extends the Base class then the method guessNumber() in Other overrides the method guessNumber in Base C. If the Base class implements MyInterface then it must implement the guessName method or declare it abstract. D. If the Base class implements MyInterface, then every class that extends the Base class also implements MyInterface. E. If the Other class extends the Base class, and implements MyInterface then the Base class also implements MyInterface F. MyInterface can have private methods specified.