Define a BankAccount class, which allows you to instantiate objects such as account1, account2, etc. The constructor of this class will initialize two instance attributes name and balance, with the default values 'Dupont' and 1000. • Three other methods will be defined: • deposit (amount) will add a certain amount to the balance; withdrawal (amount) will allow withdrawing a certain amount from the balance; • display () will display the name of the holder and the balance of his account. Optional: add the_eq__ and _repr__ methods (second picture) Please follow this exemple >>> account1 = BankAccount ('Duchmol', 800) >> account1.depot (350) >>> account1.withdrawal (200) >>> account1.display ()

Define a BankAccount class, which allows you to instantiate objects such as account1, account2, etc. The constructor of this class will initialize two instance attributes name and balance, with the default values 'Dupont' and 1000. • Three other methods will be defined: • deposit (amount) will add a certain amount to the balance; withdrawal (amount) will allow withdrawing a certain amount from the balance; • display () will display the name of the holder and the balance of his account. Optional: add the_eq__ and _repr__ methods (second picture) Please follow this exemple >>> account1 = BankAccount ('Duchmol', 800) >> account1.depot (350) >>> account1.withdrawal (200) >>> account1.display ()

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter4: More Object Concepts

Section: Chapter Questions

Problem 3PE

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An artist's discography includes several albums. Each album includes several songs. We want to model the Discography, Album and Song classes as follows • a discography has a single artist attribute and a total_time method that returns the total minutes corresponding to the artist's entire discography • an album has a single name attribute and a total_time method that returns the total minutes for the songs on the album a song has two attributes: title and duration and a duration method that returns the duration in minutes of the song • we want to take advantage of the composite pattern so that the duration method delivers the total number of minutes of a song, album or the entire discography of the artist depending on the object in question a) Draw a UML class diagram showing the solution b) Write the Ruby code that implements it
For your homework assignment, build a simple application for use by a local retail store. Your program should have the following classes: Item: Represents an item a customer might buy at the store. It should have two attributes: a String for the item description and a float for the price. This class should also override the __str__ method in a nicely formatted way. Customer: Represents a customer at the store. It should have three attributes: a String for the customer's name, a Boolean for the customer's preferred status, and a list of 5 indexes to hold Item objects. Include the following methods: make_purchase: accepts a String and a double as parameters to represent the name and price of an item this customer is purchasing. Create a new Item object with this info and append it to the internal list. If the customer is a preferred customer based on the Boolean attribute's value, take 10% off the total sale price. __str__: Override this method to print the customer's name and every…
a. Write a FractionDemo program that instantiates several Fraction objects and demonstrates that their methods work correctly. Create a Fraction class with fields that hold a whole number, a numerator, and a denominator. In addition: Create properties for each field. The set access or for the denominator should not allow a 0 value; the value defaults to 1. Add three constructors. One takes three parameters for a whole number, numerator, and denominator. Another accepts two parameters for the numerator and denominator; when this constructor is used, the whole number value is 0. The last constructor is parameterless; it sets the whole number and numerator to 0 and the denominator to 1. (After construction, Fractions do not have to be reduced to proper form. For example, even though 3/9 could be reduced to 1/3, your constructors do not have to perform this task.) Add a Reduce() method that reduces a Fraction if it is in improper form. For example, 2/4 should be reduced to 1/2. Add an operator+() method that adds two Fractions. To add two fractions, first eliminate any whole number part of the value. For example, 2 1/4 becomes 9/4 and 1 3/5 becomes 8/5. Find a common denominator and convert the fractions to it. For example, when adding 9/4 and 8/5, you can convert them to 45/20 and 32/20. Then you can add the numerators, giving 77/20. Finally, call the Reduce() method to reduce the result, restoring any whole number value so the fractional part of the number is less than 1. For example, 77/20 becomes 3 17/20. Include a function that returns a string that contains a Fraction in the usual display formatâ€”the whole number, a space, the numerator, a slash (D, and a denominator. When the whole number is 0, just the Fraction part of the value should be displayed (for example, 1/2 instead of 0 1/2). If the numerator is 0, just the whole number should be displayed (for example, 2 instead of 2 0/3). b. Add an operator*() method to the Fraction class created in Exercise 11a so that it correctly multiplies two Fractions. The result should be in proper, reduced format. Demonstrate that the method works correctly in a program named FractionDemo2. c. Write a program named FractionDem03 that includes an array of four Fractions. Prompt the user for values for each. Display every possible combination of addition results and every possible combination of multiplication results for each Fraction pair (that is, each type will have 16 results).
3- Create a class named Player with a default name as "player", a default level as 0, and a default class type of "fighter". Feel free to add any other attributes you wish! Create an instance method in the Player class called attack that takes another player as a parameter. This function should compare the level of the two players, and return whether the player won, lost, or tied. Finally create a loop that allows the user to input a name and a class type for two players; the level of both players should be determined at random (between 1 and 99). Print out the name and attributes of each player, and have the first player attack the second. Print whether the player won, lost, or tied. Ask if the user wants to try again. (Python code)
mau Open Leathing inta... - The class has data members that can hold the name of your cube, length of one of the sides and the color of your cube. - The class has a constructor that accepts the name, length of one of the sides, and color as arguments and sets the data members to those values. - The class has the following methods to set the corresponding data member. setName(string newName) setSide(double newSide) setColor(string newColor) - The class has a method called getVolume() that returns the volume of the cube, calculated by cubing the length of the side. - The class has a method called volumelncrease(double newVolume) that receive the percent the volume should increase, and then the side to the corresponding value. i - For example, 2.5 indicates 2.5% increasing of the volume. So you take the current volume, increase it by 2.5%, and then find the cube root to calculate the new side length. You can use the built in function called cbrt, part of the math library, to find the cube…
In Java Write a Fraction class that implements these methods:• add ─ This method receives a Fraction parameter and adds the parameter fraction to thecalling object fraction.• multiply ─ This method receives a Fraction parameter and multiplies the parameterfraction by the calling object fraction.• print ─ This method prints the fraction using fraction notation (1/4, 21/14, etc.)• printAsDouble ─ This method prints the fraction as a double (0.25, 1.5, etc.)• Separate accessor methods for each instance variable (numerator , denominator ) in theFraction classProvide a driver class (FractionDemo) that demonstrates this Fraction class. The driver class shouldcontain this main method : public static void main(String[] args) { Scanner stdIn = new Scanner(System.in); Fraction c, d, x; // Fraction objects System.out.println("Enter numerator; then denominator."); c = new Fraction(stdIn.nextInt(), stdIn.nextInt()); c.print(); System.out.println("Enter numerator; then denominator."); d = new…
In Java Write a Fraction class that implements these methods:• add ─ This method receives a Fraction parameter and adds the parameter fraction to thecalling object fraction.• multiply ─ This method receives a Fraction parameter and multiplies the parameterfraction by the calling object fraction.• print ─ This method prints the fraction using fraction notation (1/4, 21/14, etc.)• printAsDouble ─ This method prints the fraction as a double (0.25, 1.5, etc.)• Separate accessor methods for each instance variable (numerator , denominator ) in theFraction classProvide a driver class (FractionDemo) that demonstrates this Fraction class. The driver class shouldcontain this main method : public static void main(String[] args) { Scanner stdIn = new Scanner(System.in); Fraction c, d, x; // Fraction objects System.out.println("Enter numerator; then denominator."); c = new Fraction(stdIn.nextInt(), stdIn.nextInt()); c.print(); System.out.println("Enter numerator; then denominator."); d = new…
Create a class that represents an employee. This class will have three constructors to initialize variables. If the constructor doesn't provide a parameter for a field, make it either "(not set)" or "0" as appropriate. Name: Employee Fields: - name : String - idNumber : int - department : String - position : String Methods: + Employee() + Employee(name : String, idNumber : int) + Employee(name : String, idNumber : int, department : String, position : String) + getName() : String + getDepartment() : String + getPosition() : String + getIdNumber() : intEmployeeDemo.java Code public class EmployeeDemo{public static void printInfo(Employee e){System.out.println(e.getName() + ", " + e.getIdNumber() + ", " + e.getDepartment() + ", " + e.getPosition());}public static void main(String[] args){Employee e1 = new Employee();Employee e2 = new Employee("Bill Gates", 1975);Employee e3 = new Employee("Steve Jobs", 1976, "Design",…
Create a class that represents an employee. This class will have three constructors to initialize variables. If the constructor doesn't provide a parameter for a field , make it either "(not set)" or "0" as appropriate. Name: Employee Fields : - name : String - idNumber : Int - department : String - position : String Methods: + Employee() + Employee(name : String, idNumber : int) + Employee(name : String, idNumber : int, department : String, position : String) + getName() : String + getDepartment() : String + getPosition() : String + getIdNumber() : int Write in java and use test case #1 as an example.
Create a class that represents an employee. This class will have three constructors to initialize variables. If the constructor doesn't provide a parameter for a field, make it either "(not set)" or "0" as appropriate. Name: Employee Fields: - name : String - idNumber : int - department : String - position : String Methods: + Employee() + Employee(name : String, idNumber : int) + Employee(name : String, idNumber : int, department : String, position : String) + getName() : String + getDepartment() : String + getPosition() : String + getIdNumber() : int use test case as result
Java - Constructors Create a class named Book that has the following attributes: Publisher - String Year Published - Integer Price - Double Title - String Create a constructor for the class Book that has the parameters from the attributes of the class. After, create a method for the class that displays all attributes. Ask the user for inputs for the attributes and use the constructor to create the object. Lastly, print the values of the attributes. Inputs 1. Publisher 2. Year Published 3. Price 4. Book Title XYZ Publishing 2020 1000.00 How to Win? Sample Output Published: ABC Publishing Year Published: 2022 Price: 150.00 Book Title: Stooping too low Stooping too low is published by ABC Publishing on 2022. It sells at the price of Php150.00.
Design a Book class that holds the title, author’s name, and price of the book. Books’s constructor should initialize all of these data members except the price which is set to 500/-. Create a display method that displays all fields. All Books are priced at 500/- unless they are PopularBooks. The PopularBooks subclass replaces the Bookprice and sets each Book’s price to 50,000/- through PopularBooks construcor. Override the display method to display all fields. Write a Main () method that declares an array of five Book objects. Ask the user to enter the title and author for each of the 5 Books. Consider the Book to be a PopularBook if the author is one of the following: Khaled Hosseini, Oscar Wilde, or Rembrandt. Display the five Books’ details. c sharp