Q2. Write the definition of class Example as follows: 1. Three private instance variables x, y and z; types double, String and Boolean. 2. One public shared data member s of type integer with initial value 10. 3. Two constructors: one default, one with three parameters that initializes the variables. 4. One Property _x to set and get x variable.
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- This programming problem consists of two parts and shall lead you through all the concepts involved in OOP Composition. Part 1: A class called Author (as shown in the class diagram) is designed to model a book's author. It contains: Three private instance variables: name (String), email (String), and gender (char of either 'm' or 'f'); One constructor to initialize the name, email and gender with the given values;public Author (String name, String email, char gender) {......}(There is no default constructor for Author, as there are no defaults for name, email, and gender.) public getters/setters: getName(), getEmail(), setEmail(), and getGender();(There are no setters for name and gender, as these attributes cannot be changed.) A toString() method that returns "Author[name=?,email=?,gender=?]", e.g., "Author[name=Tan Ah Teck,email=ahTeck@somewhere.com,gender=m]". Write the Author class. Also, write a test driver (for testing purpose on your local machine) called TestAuthor to test…object oriented programming (oop) please give me full answer thanks Learning Objective:1. Classes and Object Creation 2. Access specifies. How to use it? 3. What is Constructor. 4. Practical walk through. 5. ExercisesClasses and Objects A class is like a blueprint of data member and functions and object is an instance of class. For example, let’s say we have a class Car which has data members (variables) such as speed, weight, price and functions such as gearChange(), slowDown(), brake() etc. Now let’s say I create a object of this class named FordFigo which uses these data members and functions and give them its own values. Similarly, we can create as many objects as we want using the blueprint(class)class Car { //Data members char name[20]; int speed; int weight; public: //Functions void brake(){ } void slowDown(){ } }; int main() { //ford is an object Car ford; } Access specifies (Private, Public and protected) The body of the class contains two unfamiliar keywords: private and…1) Change the visibility of the variables and constructor in the Employee class to be more secure 2) Add an Admin class with the following features: a) The Admin class is a child of the Employee class b) Admin objects have an instance string password variable c) The Admin class has a 4 parameter constructor. One parameter sets the string, the other three parameters are used as arguments for a parent constructor call. d) Admin objects have an instance getInformation() method with a void return and an Employee object parameter. The method will request the calling Admin’s password and check user input. If input matches the password, the method will display the information of the Employee parameter Please use ***C Sharp** Language to answer the code
- UML diagram analysis: refer to the following UML diagram of the Loan Class. a) How many instance variables does the TV class have? b) How many methods that return a value does the TV class have? c) How many static methods does the TV class have? d) How many constructors does the TV class have? e) How many defaults data fields does the TV class have?Complete the FoodItem class by adding a constructor to initialize a food item. The constructor should initialize the name (a string) to "None" and all other instance attributes to 0.0 by default. If the constructor is called with a food name, grams of fat, grams of carbohydrates, and grams of protein, the constructor should assign each instance attribute with the appropriate parameter value. The given program accepts as input a food item name, fat, carbs, and protein and the number of servings. The program creates a food item using the constructor parameters' default values and a food item using the input values. The program outputs the nutritional information and calories per serving for both food items. Ex: If the input is: M&M's 10.0 34.0 2.0 1.0 where M&M's is the food name, 10.0 is the grams of fat, 34.0 is the grams of carbohydrates, 2.0 is the grams of protein, and 1.0 is the number of servings, the output is: Nutritional information per serving of None: Fat: 0.00 g…Consider an online holiday booking system. The initial design model contains the classes, Booking, Individual_Booking and Group_Booking via inheritance. Which of the following is used to describe the relationship of the three classes in the object-oriented design? a. The has-a relationship b. The get-a relationship c. The set-a relationship d. The is-a relationship
- TASK 1 Draw the UML class diagrams for the following classes: An abstract Java class called Person that has the following attributes: a String called idNumber a Date called dateOfBirth representing the date of birth. a String for name A class called RideRecord with the following attributes: a Driver attribute an enum called type of RideType a Date called date a double called fee A class called Passenger that extends the Person class and has the following attributes and behaviours: an ArrayList that contains RideRecord objects called rideHistory a public method called takeRide that takes a RideRecord with the following signature:public void takeRide(RideRecord rideRecord); a public boolean method called hasRideHistory that returns whether or not the Passenger has taken a ride before. A Driver class that extends the Person class and has the following attributes and behaviors: a String called licenseCode a public method called giveRide that takes as a parameter a Passenger…answer for task 2 only the question also refers to some of the stuff on task 1 skip 1 Draw the UML class diagrams for the following classes: An abstract Java class called Person that has the following attributes: a String called idNumber a Date called dateOfBirth representing the date of birth. a String for name A class called VaccineRecord with the following attributes: an enum called type of VaccineType a Date called date a String called batchCode A class called Patient that extends the Person class and has the following attributes and behaviours: an ArrayList that contains VaccineRecord objects called vaccinationRecord a public method called vaccinate that takes a VaccineRecord with the following signature: public void vaccinate(VaccineRecord vaccineRecord); a public boolean method called isVaccinated that returns whether or not the Patient has had a vaccine. A MedicalPractitioner class that extends the Person class and has the following attributes and behaviours: a…Hand-write two Java classes, Car and Truck. They are bothsubclasses of Vehicle.a. A car has an additional instance variable, number of doors.b. A truck has an additional instance variable, number of axlesc. Write a constructor that requires input for the instance variables of each class(including registration number and owner name).d. Write getters and setters for all instance variables for both classes.
- Q2. Write a program (Abstract+Interface) Define a class named Point containing: Two private instance variables x and y of type int. A full parametrized constructor Getters for all instance variables Define an abstract class named Shape containing: An instance variable named s of type Point. A full parametrized constructor A method named getS that returns the value of instance variable An abstract method named Area that has a return type double. Define an interface named Printable containing a method print without parameters and returning void. Define a class named Rectangle which is extended from class Shape, implements the interface printable and containing: Three instance variables named Length, Width of type int and an instance variable named d of type Point. A constructor with two parameters of type Point which initializes all the instance variables. The lengthis the difference in y-coordinates of any top and bottom point. length= Math.abs(s.getY()-d.getY()); The…Hi can you assist me on the problem below for a class and a test class that conforms to the following specifications: 1. The name of the class is RightTriangle 2. The class has member variables base and height 3. The class has a constructor that initializes base and height 4. The class has accessors and mutators for base and height 5. The class has a toString method that produces String representation of a RightTriangle like the following example for a triangle with base 12 and height 10. Base : 12 Height 10 6. The class has a method called findArea to compute the area of the right triangle. Here is a suggested implementation. public double findArea() { return 0.5* this.base*this.height; } 7. The class using proper naming conventions Write a test class called RightTriangleTest that conforms to the following: 1. Create an object with base = 10 and height = 20, for example myTriangle. 2. To print the toString for myTriangle. 3. To print the area of myTriangle. System.out.println(“The…Make class Student, you need to add the normal constructor with parameters not default with 5 attributes age, gender, ID full name, date of registration JAVA