N-SIDED REGULAR POLYGON) In an n-sided regularpolygon, all sides have the same length and all angles have the same degree (i.e.,the polygon is both equilateral and equiangular). Design a class namedRegularPolygon that contains:▪ A private int data field named n that defines the number of sides in thepolygon with default value 3.▪ A private double data field named side that stores the length of the sidewith default value 1.A private double data field named x that defines the x-coordinate of thepolygon's center with default value 0.▪ A private double data field named y that defines the y-coordinate of thepolygon's center with default value 0.A no-arg constructor that creates a regular polygon with default values.A constructor that creates a regular polygon with the specified number ofsides and length of side, centered at (0, 0).A constructor that creates a regular polygon with the specified number ofsides, length of side, and x- and y-coordinates.▪ The accessor and mutator methods for all data fields.▪ The method getPerimeter() that returns the perimeter of the polygon.▪ The method getArea () that returns the area of the polygon. The formula forcomputing the area of a regular polygon isArea =nx s²4 x tan(5)Draw the UML diagram for the class then implement the class. Write a testprogram that creates three RegularPolygon objects, created using the no-argconstructor, using Regular Polygon (6, 4), and using Regular Polygon (10,4, 5.6, 7.8). For each object, display its perimeter and area.

In this question we have to design and implement a Java class named RegularPolygon to model a…

N-SIDED REGULAR POLYGON) In an n-sided regular polygon, all sides have the same length and all angles have the same degree (i.e., the polygon is both equilateral and equiangular). Design a class named Regular Polygon that contains: ▪ A private int data field named n that defines the number of sides in the polygon with default value 3. ▪ A private double data field named side that stores the length of the side with default value 1. ▪ A private double data field named x that defines the x-coordinate of the polygon's center with default value 0. ▪ A private double data field named y that defines the y-coordinate of the

N-SIDED REGULAR POLYGON) In an n-sided regular polygon, all sides have the same length and all angles have the same degree (i.e., the polygon is both equilateral and equiangular). Design a class named Regular Polygon that contains: ▪ A private int data field named n that defines the number of sides in the polygon with default value 3. ▪ A private double data field named side that stores the length of the side with default value 1. ▪ A private double data field named x that defines the x-coordinate of the polygon's center with default value 0. ▪ A private double data field named y that defines the y-coordinate of the

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Project 2: Cash Register Part 1: Write a class named RetailItem that holds data about an item in a retail store. The class should store the following data in attributes: item description, units in inventory, and price. Once you have written the class, write a program that creates three RetailItem objects and stores the following data in them: Description. Units in Inventory PriceItem #1 Jacket 12 59.95Item #2 Designer Jeans 40 34.95 Item #3 Shirt 20 24.95 Part 2: Create a CashRegister class that can be used with the RetailItem class. The CashRegister class should be able to internally keep a list of RetailItem objects. The class should have the following methods:• A method named purchase_item that accepts a RetailItem object as an argument. Each time the purchase_item method is called, the RetailItem object that is passed as…
Double Bubble For this exercise you need to create a Bubble class and construct two instances of the Bubble object. You will then take the two Bubble objects and combine them to create a new, larger combined Bubble object. This will be done using functions that take in these Bubble objects as parameters. The Bubble class contains one data member, radius_, and the corresponding accessor and mutator methods for radius_, GetRadius and SetRadius. Create a member function called CalculateVolume that computes for the volume of a bubble (sphere). Use the value 3.1415 for PI. Your main function has some skeleton code that asks the user for the radius of two bubbles. You will use this to create the two Bubble objects. You will create a CombineBubbles function that receives two references (two Bubble objects) and returns a Bubble object. Combining bubbles simply means creating a new Bubble object whose radius is the sum of the two Bubble objects' radii. Take note that the CombineBubbles function…
Personal Information Class: Design a class called Employee that holds the following data about an employee: name ID number Department Job Title Class. Store your class in a separate file called employee.py. Your class will have an initializer method that will be passed the information entered by the user as arguments. Write appropriate accessor and mutator methods for each data attribute. Write a __str__ method to print the contents of the class (see example of __str__ on p. 523). Main program: Your main program should create three instances of the class. Your program should get the information from the user and pass it as parameters to the initializer method. Using the __str__ method invoked by the print function, the program should display the personal information for the three individuals. Output and Sample Dialog: Enter employee name: Mary Smith Enter employee ID: 123456 Enter department: Accounting Enter position: Accountant Enter employee name: Joe Morales Enter…