Write the Circle class:• A Circle has a radius – Add instance variable – 2 constructors – one should be the default or no args – Add accessor and mutator method for each instance variable – Add methods to calculate Area, Perimeter, and Diameter TestCircle Create a Circle with the radius Print the radius using the getters Print the Circle’s area, circumference, and diameter Change the circle’s radius Reprint the information

Write the Circle class:• A Circle has a radius – Add instance variable – 2 constructors – one should be the default or no args – Add accessor and mutator method for each instance variable – Add methods to calculate Area, Perimeter, and Diameter TestCircle Create a Circle with the radius Print the radius using the getters Print the Circle’s area, circumference, and diameter Change the circle’s radius Reprint the information

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter10: Introduction To Inheritance

Section: Chapter Questions

Problem 3PE

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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).
Create a PhoneListing class that uses the Name class for one of its instance variables. Remember the instance data in the Name class is private to the class and must be accessed through its methods.Add additional instance variables to the PhoneListing class for the phone number. The phone number should be broken down into three parts, area code, city code, and local code.Create all appropriate methods for the new class, including the following three methods: equals(PhoneListing):boolean, an equality of state method that returns true if the objects contain the same name and phone number. compareTo(PhoneListing):int, a comparison method that returns -1 if the calling PhoneListing object should precede the argument PhoneListing object, 1 if the calling PhoneListing object should come after the argument PhoneListing object, and a 0 if they are equal. Use last, first, middle, phone number as the ordering values. example:Adams, Alex, Henry, (609)473-2101 Adams, George, Henry, (509)373-1101…
Class: Square Create a class called "Square", which is inherited from“TwoDimensionShape” class. The "Square" class is used to calculate theArea and the Perimeter of square shapes when their side-length is given, or in contrast,finding the side-length of the square when the Area or the Perimeter of the square is given.The specifications of this class are below. Data Members (Attributes): All are private. sideLength: the sidelight (L) of the square. Methods/Operations/Getters/Setters: Default Constructor: when creating an object this constructor must set the side-length of the square by calling the method setSideLength(). Also, this constructor willcall the findArea() and the findPerimeter() in addition to summaryPrint() to calculateand print all needed information. User-Defined Constructor: when creating an object this constructor shouldfind the side-length of the square by calling the method findSquareSideLength()and pass the Area or the…
Create a RobotFriend class. RobotFriend is a new toy just on the market. Copy the starter class and the tester from Codecheck. A RobotFriend has a name and replies to various commands Provide a constructor that takes the name of the RobotFriend as a parameter. Remember that a constructor has the same name as the class. What does the class need to remember? That is the instance variable. Provide the following methods: public String getName() gets the name of this RobotFriend public void setName(String newName) sets a new name for this RobotFriend public String whatDoYouNeed() returns a string consisting of name + " needs a battery charge" where name is the name of this RobotFriend (which was supplied in the constructor) public String doCommand(String whatToDo) returns a string consisting of "Your friend " + name + " does not " + whatToDo where name is the name of this RobotFriend and whatToDo is the parameter
Write the Circle class:• A Circle has a radius– Add instance variable– 2 constructors – one should be the default or no args– Add accessor and mutator method for each instance variable– Add methods to calculate Area, Perimeter, and Diameter– Write a printArea method in the main program which receives an object circleand “times” integer– printArea() will print the radius and area of objects “times” time by changingthe radius of object.public static void printAreas(Circle c, int times) {System.out.println("Radius \t\t Area");while (times>=1) {//print the radius and area here// create a new object by changing the radius heretimes--;}}//end of printAreas
The xxx_Pet classA Pet has a:– Name• Include an instance variable• Getters and setters for an instance variable• A toString method which returns a String containing the pet name Abstract methods: speak() and move()The subclassesWrite a dog, cat, snake subclasses with proper instant variables and methodsWrite a class xxx_TestPet which will1- Create a dog, a snake, and a cat objectsSample OutputPet Fido is a dog, weighing 45 poundsFido says woofrun Fido runPet Sam is a snake, 30 inches longSam says hissslither Sam slitherPet Hershey is a cat, with Long hairHershey says Meowprance Hershey prance2- Print just the weight of the Dog, the length of the Snake and the hair length of theCat as shown belowFido weighs 45 poundsSam has length 30 inchesHershey has Long hair 3- Store the objects in an Array of Pet objects and print the information belowPet D1 is a dog, weighing 55 poundswoofrunPet S1 is a snake, 30 inches longhissslitherPet C1 is a cat, with Long hairmeowprancePet D2 is a dog,…
Java Object Oriented Programming Create a Shape class that shall have color and filled instance variables of enum Color and boolean type. The filled boolean variable shall show, whether the shape is filled (colored). The enum Color shall be defined within the class having 4 color names (choose any four). Also define getArea and getPerimeter method in Shape class, both shall return 0. Create Rectangle class with length and width attributes and a Circle class with radius attribute, of type double. Properly encapsulate all fields. Circle and Rectangle shall extend Shape class and override getArea and getPerimters methods as per its type and specific formula. In Test class, create an object of Rectangle and Circle, by initializing all attributes in constructor and print both shapes' area and perimters. In Test class, define a static method with following signature, public static void printEachShapeCount(Shape... shapes) As you know, the parent type variable can hold the…
using c++ oop !!! kindly need help asap. Implement the shape, rectangle, and square classes with components as shown and the following functionality: Each constructor and destructor prints a message to the screen that it is being called in each class implement the area() method that calculates the area of the figure (for the Shape class you can return 0) Example Constructor shape: Rectanleeeeeee Rectangle constructor 232.5 Rectanleeeeeee Eeeeeeee Rectangle destructor Shape destructor Constructor shape: Squareeeee Rectangle constructor Square constructor Squareeeee AAAaaaa 105.165 Square destructor Rectangle destructor Shape destructor // main.cpp : Defines the entry point for the application.// #include "main.h"using namespace std; int main(void) {{rectangle rec("Rectanleeeeeee", 10, 23.25);std::cout << rec.area() << std::endl;std::cout << rec.get_name() << std::endl;rec.set_name("Eeeeeeee");std::cout << rec.get_name() << std::endl;} {square…
Create a subclass named Square from the superclass GeometricObject. Create an instance variable named width with initial value 0. Create a no-arg constructor. Create the another constructor, which has one parameter named wid. Assign the wid to the instance variable named width. Create the getWidth() method, the setWidth() method. Override the getArea() method. Override the getPerimeter() method. Create a test class named Test to create an instance with wid= 6 from Square class. Call the getArea() and getPermeter() methods to print out the area and perimeter of the square with width=6.
The BankAccount class models an account of a customer. A BankAccount has the followinginstance variables: A unique account id sequentially assigned when the Bank Account is created. A balance which represents the amount of money in the account A date created which is the date on which the account is created.The following methods are defined in the BankAccount class: Withdraw – subtract money from the balance Deposit – add money to the balance Inquiry on:o Balanceo Account ido Date createdThe SavingsAccount class models a bank account which is meant for long term savingsand earns interest. It inherits all the fields and methods of the BankAccount class. TheSavingsAccount class has an additional instance variable, interest rate. The interest rate is adecimal representing the rate at which the account earns interest. For example, an interestrate of .01 means that the account will earn 1% interest on its balance.The following additional methods are defined in the SavingsAccount…
The BankAccount class models an account of a customer. A BankAccount has the followinginstance variables: A unique account id sequentially assigned when the Bank Account is created. A balance which represents the amount of money in the account A date created which is the date on which the account is created.The following methods are defined in the BankAccount class: Withdraw – subtract money from the balance Deposit – add money to the balance Inquiry on:o Balanceo Account ido Date createdThe SavingsAccount class models a bank account which is meant for long term savingsand earns interest. It inherits all the fields and methods of the BankAccount class. TheSavingsAccount class has an additional instance variable, interest rate. The interest rate is adecimal representing the rate at which the account earns interest. For example, an interestrate of .01 means that the account will earn 1% interest on its balance.The following additional methods are defined in the SavingsAccount…
THIS NEEDS TO BE DONE IN JAVA! Create a class called Employee that includes three instance variables—a first name (type String), a last name (type String) and a monthly salary (double). Provide a constructor that initializes the three instance variables. Provide a set and a get method for each instance variable. If the monthly salary is not positive, do not set its value. Write a test app named EmployeeTest that demonstrates class Employee’s capabilities. Create two Employee objects and display each object’s yearly salary. Then give each Employee a 10% raise and display each Employee’s yearly salary again.