Create a class called Pyramid. A Pyramid is described by three pieces of private information as instance variables: base width, base length, and height. All are double. Provide a set and a get method for each instance varialhle. The setters must ensure that the values are positive and greater than 0. Your class should have one constructor that properly initializes the three instance variables. Add a no-arguments constructor that sets width = 1, length = 1, height = 2; In addition, provide the following methods: 1. A method named calculateArea) that returns the area calculated based on the following formula: width (length+ height2 2 2 Area = (length x width) + length x + height? + width x eng) 2 2. A method named calculateVolume) that returns the volume calculated based on the following formula: length x width x height Volume = 3

Create a class called Pyramid. A Pyramid is described by three pieces of private information as instance variables: base width, base length, and height. All are double. Provide a set and a get method for each instance varialhle. The setters must ensure that the values are positive and greater than 0. Your class should have one constructor that properly initializes the three instance variables. Add a no-arguments constructor that sets width = 1, length = 1, height = 2; In addition, provide the following methods: 1. A method named calculateArea) that returns the area calculated based on the following formula: width (length+ height2 2 2 Area = (length x width) + length x + height? + width x eng) 2 2. A method named calculateVolume) that returns the volume calculated based on the following formula: length x width x height Volume = 3

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter10: Introduction To Inheritance

Section: Chapter Questions

Problem 6RQ

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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. (c++ language)
Create a class Rectangle. The class has attribute length and width, each of which defaults to 1. It has methods that calculate the perimeter and area of the rectangle. It has set and get methods for both length and width. The set method should verify that length and width are each floating-point numbers larger than 0.0 and less than 20.0. Write a program to test class Rectangle
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Create a class called Invoice that a hardware store might use to represent an invoice for an item sold at the store. An Invoice should include four pieces of information as instance variable Part number(type String) Part description(type String) Quantity of the item being purchased (type int) Price per item (double). Your class should have a constructor that initializes the four instance variables. Provide a set and a get method for each instance variable. In addition, provide a method named getInvoice Amount that calculates the invoice amount (i.e., multiplies the quantity by the price per item), then returns the amount as a double value. If the quantity is not positive, it should be set to 0. If the price per item is not positive, it should be set to 0.0. Write a test application named InvoiceTest that demonstrates class Invoice’s capabilities.
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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.