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How would you change the definition of the class DayOfYear in Display 10.4 so that it has two versions of an (overloaded) constructor? One version should have two int formal parameters (one for the month and one for the day) and should set the private member variables to represent that month and day. The other should have no formal parameters and should set the date represented to January 1. Do this without using a constructor initialization section in either constructor.
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- Modify the student class presented in this chapter as follows. Each student object should also contain the scores for three tests. Provide a constructor that sets all instance values based on parameter values. Overload the constructor such that each test score is assumed to be initially zero. Provide a method called setTestScore that accepts two parameters: the test number (1 through 3) and the score. Also provide a method called getTestScore that accepts the test number and returns the appropriate score Provide a method called average that computes and returns the average test score for this student. Modify the toString method such that the test scores and average are included in the description of the student. Modify the driver class main method to exercise the new Student methods. (Java)arrow_forwardModify the student class presented in this chapter as follows. Each student object should also contain the scores for three tests. Provide a constructor that sets all instance values based on parameter values. Overload the constructor such that each test score is assumed to be initially zero. Provide a method called setTestScore that accepts two parameters: the test number (1 through 3) and the score. Also provide a method called getTestScore that accepts the test number and returns the appropriate score Provide a method called average that computes and returns the average test score for this student. Modify the toString method such that the test scores and average are included in the description of the student. Modify the driver class main method to exercise the new Student methods. (c++ language)arrow_forwardHi, I am making a elevator simulation and I need help in making the elevator classes using polymorphism on the comments that says logic. Any help is appreciated. There are 4 types of elevators in the system:StandardElevator: This is the most common type of elevator and has a request percentage of 70%. Standard elevators have a maximum capacity of 10 passengers.ExpressElevator: This type of elevator has a request percentage of 20%. Express elevators have a maximum capacity of 8 passengers and are faster than standard elevators.FreightElevator: This type of elevator has a request percentage of 5%. Freight elevators have a maximum capacity of 5 passengers and are designed to transport heavy items.GlassElevator: This type of elevator has a request percentage of 5%. Glass elevators have a maximum capacity of 6 passengers and are designed to transport fragile item This what i have so far // Elevator abstract classpublic abstract class Elevator { protected String type; protected int…arrow_forward
- Please help me with this using java. Make it simplearrow_forwardCan you call a constructor from another constructor? A solution is placed in the "solution" section to help you, but we would suggest you try to solve it on your own first. Problem Statement# A class can have multiple parameterized constructors which can call each other. You are given a partially completed code of a Car class in the editor. Modify the parametrized constructor which assigns parameters to the required fields. Input# carName, carModel, carCapacity Output# carName, carModel, carCapacity Sample Input# "Ferrari", "F8", "100" Sample Output# "Ferrari", "F8", "100" Part of solution // Car class class Car { // Private Fields private String carName; private String carModel; private String carCapacity; // Default Constructor public Car() { this.carName = ""; this.carModel = ""; this.carCapacity = ""; } // Parameterized Constructor 1 public Car(String name, String model) { this.carName = name; this.carModel = model; } // Parameterized Constructor 2 public…arrow_forwardThe following is a class definition for a simple Ebook. Two instance variables and one parameterless constructor are provided. Part 1: Write a second constructor that takes a String array of pages as input and sets the String array instance variable equal to the input. Continue to default the current page number to zero. Part 2: Write a getter and a setter method for the page number variable. The setter should check to make sure that the input is a valid page number and only update the variable if the new value is valid. Part 3: Write a getCurrentPage method that returns the String of the current page indexed by current_page. public class Ebook{ private String[] pages; private int current_page; //constructor public Ebook() { this.pages = {"See Spot.", "See Spot run.", "Run, Spot, run."}; this.current_page = 0; }}arrow_forward
- You are going to be working with class Rational which defines rational number objects. A rational number is a number that can be written as a fraction. A rational number consists of a numerator and a denominator (which cannot be 0). Rational numbers also have the ability to be displayed in an original form, decimal form or reduced form. You are going to be completing various object methods to perform the tasks previously list. You are to begin with the Rational Class and RationalTest classes provided. Make all modifications outlined in the point values below. Pay close attention to the names of the attributes, methods and return values. You are given starter files and the test files necessary. Only modify class Rational and keep the function headers provided to you for all of Part 1. You will need to add your own methods for Part 2. Part 1a This version requires that you complete the constructor, getOriginal(), and getDecimal() methods of class Rational. Constructor: at this stage…arrow_forwardWrite the missing code in the dark picture. This is not gradedarrow_forwardCreate a class called Invoice in your assignment source package. An Invoice should include four pieces of information as attributes(instance variables) - a part number of type String, a part description of type String, a purchasing quantity of type Int, and a price per item of type double. Your class should have a full constructor that initializes all the four attributes. Provide a set and a get method for each attribute. In addition, provide a method named getInvoiceTotal that calculates the invoice total, purchasing quantity * price per ite, and returns the invoice total. If the quantity is negative, returns 0. Create an test app named InvoiceTest in the same package that demonstrates class Invoice's capabilities.arrow_forward
- Create a Right Triangle class that has two sides. Name your class rightTraingle. Code getter and setters for the base and the height. (Remember class variables are private.) The class should include a two-argument constructor that allows the program to set the base and height. The constructor should verify that all the dimensions are greater than 0. before assigning the values to the private data members. If a side is not greater than zero, set the value to -1. The class also should include two value-returning methods. One value-returning method should calculate the area of a triangle, and the other should calculate the perimeter of a triangle. If either side is -1, these functions return a -1. The formula for calculating the area of a triangle is 1/2 * b*h, where b is the base and h is the height. The formula for calculating the perimeter of a triangle is b+h+sqrt (b*b+h*h). Be sure to include a default constructor that initializes the variables of the base, height to -1. To test…arrow_forwardThe class "Car" has the following attributes: plate (String), mark (String), model (String), year (int), km (int).Write a constructor method for the "Car" class that takes values as parameters for all these attributes.arrow_forwardFor this exercise, you will be completing the Account class, which simulates a regular bank account, then using overrides and calls to the superclass to create a StudentAccount. Student accounts differ from regular accounts in that they get a bonus $1 for every deposit, but a $2 fee for every withdrawal. You will override the methods in the StudentAccount by calling the superclass methods with the additonal amount or fee incorporated since the balance is not directly stored in the StudentAccount object. You will also update the toString, as outlined in the comments. When completed, create one student account and one regular account for testing. Deposit and withdraw money and print the results. import java.text.*;public class BankTester{public static void main(String[] args){Account a = new Account("Imran", 1100);a.deposit(200.00);System.out.println(acc1.toString());a.withdraw(100.00); }} public class StudentAccount extends Account{// Complete this class with Override methods.…arrow_forward
- Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill EducationStarting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSONDigital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
- C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSONDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningProgrammable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
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