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)

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)

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter3: Using Methods, Classes, And Objects

Section: Chapter Questions

Problem 13PE

See similar textbooks

Similar questions

In this lab you will write three classes: Die, PairOfDice, and Player.The Die class mimics the rolling of a die. Specifically, this class will implement the following methods:• A default constructor initializing the number of sides of a die to 6.• An overloaded constructor that takes an integer number of sides (assume greater than 1).• roll which generates and returns a random number between 1 and the number of sides(inclusive).• An accessor method to read the value of the face on the die.• A toString method returning the string representation of the face value.The maximum number of sides should be stored as a private constant in the Die class. Also use theRandom class for the random number generator.The PairOfDice class mimics the rolling of two dice. Specifically, this class will implement thefollowing methods:• A default constructor that creates and initializes the number of sides of each die to 6.• An overloaded constructor that creates and takes two integer number of sides, one…
Given this class, please add the requested methods in the designated spaces provided. Instance methods: a) Write two constructors that will initialize the instance variables for a Student instance as follows: 1) Write a constructor that takes in three parameters – an int, a String, and a double. The constructor will assign them to the ID, name, and GPA instance variables respectively. 2) Write a no-argument (zero-parameter) constructor that will set the ID to - 1, the name to “No name assigned”, and the GPA to –1.0. b) Write an accessor method for the name variable. c) Write a mutator method for the GPA variable. d) Write a toString() method that will display all three instance variables on a single line, with a | (vertical bar) character between each one. e) Write an equals() method that returns true only if all three instance variables are equal. public class Student { // declare instance variables here private int ID; private String name; private double GPA;
(1) Add an __init__ method to the Widget class below. Each object of type Widget should have an instance variable called name and an instance variable called cost that represents a cost in dollars; those values are passed in when an object of type Widget is initialized. (2) Add a method to class Widget called is_cheap that returns True if the cost is less than $10, and False otherwise. (3) Add proper doctrings along with two examples for each method. You may use the Sample Usage code given below in your work.
Please write the Java code for a Phone class that represents a mobile phone, as detailed below: It should have instance variables (attributes) for make, model, color (all stored as Strings) and capacity (stored as int: the storage capacity in GB) Please define one constructor with parameters for all those attributes. The Phone class will be immutable, except its storage capacity can be changed. So please write only one mutator method, called .setCapacity. Please write accessor methods for each instance variable. Please write a .toString() method to display all the Phone's information. Please write a .equals method to compare two Phone objects, returning true if all their attributes are the same. Finish the Jave program to show the outputs bellow: Code: class Main { public static void main(String[] args) { Phone craigPhone, bettoPhone, tobyPhone; craigPhone = new Phone("Samsung", "Galaxy S21 5G", "Phantom Violet", 256); bettoPhone = new Phone("Apple", "iPhone 13 Pro",…
Create a class Course, which has one field: String courseName Create the constructor, accessor, and mutator for the class. Then, in the main method of this class, create an instance of the class with the name "CST1201". Write an equivalent while statement to replace the following for statement for (int i=2; i<100; i=i+2) { System.out.println(i); }
box1 and box2 are instances of the Box class. Attributes length, width, and height of both box1 and box2 are read from input. Then, two strings are read from input. In the Box class, define instance method print_measurements() with self and one string as parameters to output the string parameter in one line, and the following in the next line: The value of attribute length ' by ' The value of attribute width ' by ' The value of attribute height
Please in pyth coding with correct indentation 4a) Given that you have a Liquid class that can be initialized with any amount of gallons, liters, ounces, etc, write the first line of the method that will allow you to add together two Liquid objects using operator overloading. Again, write ONLY the first line (method definition) – you do NOT have to write the entire method. 4b) Given that you have L1 and L2 which are instances of the Liquid class, write a line of code that uses operator overloading to add them together and assign the result to L3.
Create a class Animal with a constructor that takes no parameters and has an instance variable: private int energy; When an animal is "born," it has one unit of energy. It has the methods: public void eat(int amountToEat) - which increases the amount of energy the animal has by amountToEat public void move(int amountToMove) - which decreases the energy the animal has by amountToMove. public int getEnergy() - which returns the amount of energy left Notice there is no setEnergy method. Energy is only changed by eating or moving. You should also create a subclass BetterAnimal which has a cap on the amount of energy an animal can have. The constructor takes a parameter that specifies a maximum for energy. You will need to save this in another instance variable. Override the eat and move methods In the eat method: If the amount the BetterAnimal eats would set its energy above the max, the energy level is only increased to the max. Also energy is only changed if the amount > 0 In…
Create three more classes that inherit from Crew. Unless noted otherwise, each of these classes has the same instance variables as Crew, so don’t override the __init__ method. Engineer(Crew): The only method that should be overridden in the Engineer class is the repair method. repair(self, ship) takes in self and a Starship object, and represents an attempt by the Engineer to repair a section of the ship. If the engineer’s current location is damaged (that is, ship.damaged for the location is True), then the value for that key should be changed to False, and a message should print out of the form: <Name> fixed the damage to <Location>. If the engineer’s current location is NOT damaged, then instead the method should print a message of the form: <Location> isn’t damaged. Captain(Crew): The only method that should be overridden in the Captain class is the fire_lasers method. This method represents an attempt by the captain to fire lasers…
Create three more classes that inherit from Crew. Unless noted otherwise, each of these classes has the same instance variables as Crew, so don’t override the __init__ method. Engineer(Crew): The only method that should be overridden in the Engineer class is the repair method. repair(self, ship) takes in self and a Starship object, and represents an attempt by the Engineer to repair a section of the ship. If the engineer’s current location is damaged (that is, ship.damaged for the location is True), then the value for that key should be changed to False, and a message should print out of the form: <Name> fixed the damage to <Location>. If the engineer’s current location is NOT damaged, then instead the method should print a message of the form: <Location> isn’t damaged. Captain(Crew): The only method that should be overridden in the Captain class is the fire_lasers method. This method represents an attempt by the captain to fire lasers at…
Create 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.
Can 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…