Answered: The Java feature in Q1 which create a…

The Java feature in Q1 which create a new version of predefined method getPerimeter() is called Polymorphism Override Overload Inheritance

Microsoft Visual C#

7th Edition

ISBN:9781337102100

Author:Joyce, Farrell.

Publisher:Joyce, Farrell.

Chapter10: Introduction To Inheritance

Section: Chapter Questions

Problem 6E

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In this problem you will first write an interface and then modify classes to implement the interface. Write an interface, GeometricSolid, which has one method, volume. The volume method takes no arguments and returns a double. You are provided with three classes: Cylinder, Sphere, and RightCircularCone Modify the classes so that they implement the GeometricSolid interface. Supply the appropriate method for each class. You can use Google search to find the formula for the volume. Make sure that you use Math.PI in your calculations. Notice in InterfaceRunner that the objects are added to an ArrayList of GeometricSolids. Provide Javadoc. Cylinder.java /*** Models a Cylinder*/public class Cylinder {private double radius;private double height; /*** Constructor for objects of class Cylinder* @param radius the radius of the Cylinder* @param height the height of this Cylinder*/public Cylinder(double radius, double height){this.radius = radius;this.height = height;}/*** Gets the radius of this…
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).
This is for pygame. Block class The Block class inherits from Drawable and it will draw a square with a black outline at its current location. You must implement at the very least the required methods of the base class (draw and get_rect), as well as a constructor. You may need to implement other methods as part of the public interface. Put all this code in a file name Block.py This is the Drawable class.
This is for pygame Ball Class: The Ball class inherits from Drawable and it will draw a circle at its current location. You must implement at the very least the required methods of the base class (draw and get_rect), as well as a constructor. You may need to implement other methods as part of the public interface. This is the Drawable Class
Create a Visible interface with two methods: makeVisible and makeInvisible. Both methods should accept no parameters and return a boolean value. Explain how a class may implement this interface.
Write an interface and then modify classes to implement the interface. Write an interface, GeometricSolid, which has one method, volume. The volume method takes no arguments and returns a double. You are provided with three classes: Cylinder, Sphere, and RightCircularCone Modify the classes so that they implement the GeometricSolid interface. Supply the appropriate method for each class. Make sure that you use Math.PI in your calculations. Notice in InterfaceRunner that the objects are added to an ArrayList of GeometricSolids. Cylinder.java /*** Models a Cylinder*/public class Cylinder {private double radius;private double height; /*** Constructor for objects of class Cylinder* @param radius the radius of the Cylinder* @param height the height of this Cylinder*/public Cylinder(double radius, double height){this.radius = radius;this.height = height;}/*** Gets the radius of this Cylinder* @return the radius of the Cylinder*/public double getRadius(){return radius;}/*** Sets the radius of…
Complete the Course class by implementing the findStudentHighestGpa() method, which returns the Student object with the highest GPA in the course. Assume that no two students have the same highest GPA. Given classes: Class Course represents a course, which contains an ArrayList of Student objects as a course roster. (Type your code in here.) Class Student represents a classroom student, which has three private fields: first name, last name, and GPA. (Hint: GetGPA() returns a student's GPA.) Ex: If the following students and their GPA values are added to a course: Henry Nguyen with 3.5 GPABrenda Stern with 2.0 GPALynda Robison with 3.2 GPASonya King with 3.9 GPA then the findHighestStudent() method returns a student and the program output is: Top student: Sonya King (GPA: 3.9)Code:Course.java: import java.util.ArrayList; //create class Student //create class Courseclass Courses{ private ArrayList<Student> roster; // collection of Student object // class constructor…
When you add a contact to your phone, it automatically sorts those names alphabetically. In this exercise, we are going to create a phonebook that automatically sorts everytime a new number is added to the phonebook. A PhoneNumber class has been created already that has the instance variables name and number. Your job is to create the PhoneBook class that will store an ArrayList of PhoneNumbers. The PhoneBook class does not have a constructor - it only contains an ArrayList that can store the individual phone numbers that are added to it. There should be three methods in the PhoneBook class: addNumber- This method takes a PhoneNumber and adds it to the directory. Once the number has been added, the sort method is called on the directory to sort that new address into the phone book. sort- This method sorts the directory in alphabetical order A-Z.a. Remember that in order to compare Strings, we can use the compareTo() method. This returns an integer that indicates whether a String’s…
A. Writing an Interface In this problem you will first write an interface and then modify classes to implement the interface. Write an interface, GeometricSolid, which has one method, volume. The volume method takes no arguments and returns a double. You are provided with three classes: Cylinder, Sphere, and RightCircularCone Modify the classes so that they implement the GeometricSolid interface. Supply the appropriate method for each class. You can use Google search to find the formula for the volume. Make sure that you use Math.PI in your calculations. Notice in InterfaceRunner that the objects are added to an ArrayList of GeometricSolids. since I couldn't fit all images with two screen shots I left the link here link: https://codecheck.it/files/18040616319p6jy6gzkdzuq08nmlp81251t
Design an interface named Colorable with a voidmethod named howToColor(). Every class of a colorable object must implementthe Colorable interface. Design a class named Square that extendsGeometricObject and implements Colorable. Implement howToColor todisplay the message Color all four sides. The Square class contains adata field side with getter and setter methods, and a constructor for constructinga Square with a specified side. The Square class has a private double datafield named side with its getter and setter methods. It has a no-arg constructorto create a Square with side 0, and another constructor that creates a Squarewith the specified side.Draw a UML diagram that involves Colorable, Square, and GeometricObject.Write a test program that creates an array of five GeometricObjects. For eachobject in the array, display its area and invoke its howToColor method if it iscolorable.
Write a class 'Cylinder' that has two fields: height and radius. The class should have only one parameterized constructor function to initialize these fields. The class should also have a method 'getVolume()' to calculate the volume of this cylinder. Now, create any 2 objects of this class with arbitrary values and show their volumes.
We have an interface called discount strategy, that calculates discounts for a simple parking management software. It has two sub-classes that implement different discount strategies. 1. DUAffilatedFriday discounts - make discounts for DUAffilated car type on Fridays 2. SUVFriday discounts - make discounts for SUV car type on Fridays These two classes check the car type and day of the week and implement a certain discount strategy. 1. Use a factory pattern to reimplement the entire code as-is. 2. Use a main method to test your code NOte - Use java to write your code Code DiscountStrategy.java import java.time.*; interface DiscountStrategy{public String getStrategyName();public double getDiscount(String CarType, LocalDateTime date);} DUAffilatedFridayDiscounts.java import java.time.*; public class DUAffilatedFridayDiscounts implements DiscountStrategy{ // setting default value of discount to 0.0private double discountPercentage = 0.0;private boolean checkDate(LocalDateTime…