MyLab Programming with Pearson eText -- Access Code Card -- for Starting Out with Java: From Control Structures through Objects

7th Edition

ISBN: 9780134793672

Author: GADDIS

Publisher: PEARSON

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Textbook Question

Chapter 8, Problem 9PC

Geometry Calculator

Design a Geometry class with the following methods:

A static method that accepts the radius of a circle and returns the area of the circle. Use the following formula:

Area = πr²

Use Math.PI for π and the radius of the circle for r.

A static method that accepts the length and width of a rectangle and returns the area of the rectangle. Use the following formula:

Area = Length × Width

A static method that accepts the length of a triangle’s base and the triangle’s height. The method should return the area of the triangle. Use the following formula:

Area = Base × Height × 0.5

The methods should display an error message if negative values are used for the circle’s radius, the rectangle’s length or width, or the triangle’s base or height.

Next, write a program to test the class, which displays the following menu and responds to the user’s selection:

Geometry Calculator

1. Calculate the Area of a Circle
2. Calculate the Area of a Rectangle
3. Calculate the Area of a Triangle
4. Quit

Enter your choice (1-4):

Display an error message if the user enters a number outside the range of 1 through 4 when selecting an item from the menu.

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Chapter 8, Problem 8PC

Chapter 8, Problem 10PC

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Chapter 8 Solutions

MyLab Programming with Pearson eText -- Access Code Card -- for Starting Out with Java: From Control Structures through Objects

Ch. 8.1 - What is the difference between an instance field...Ch. 8.1 - Prob. 8.2CP Ch. 8.1 - Describe the limitation of static methods.Ch. 8.8 - Prob. 8.4CP Ch. 8.9 - Look at the following statement, which declares an...Ch. 8.9 - Assume that the following enumerated data type has...Ch. 8.9 - Prob. 8.7CP Ch. 8 - This type of method cannot access any non-static...Ch. 8 - Prob. 2MC Ch. 8 - If you write this method for a class, Java will...

Ch. 8 - Making an instance of one class a field in another...Ch. 8 - This is the name of a reference variable that is...Ch. 8 - This enum method returns the position of an enum...Ch. 8 - Assuming the following declaration exists: enum...Ch. 8 - You cannot use the fully qualified name of an enum...Ch. 8 - The Java Virtual Machine periodically performs...Ch. 8 - If a class has this method, it is called...Ch. 8 - CRC stands for a. Class, Return value, Composition...Ch. 8 - True or False: A static member method may refer to...Ch. 8 - True or False: All static member variables are...Ch. 8 - Prob. 14TF Ch. 8 - Prob. 15TF Ch. 8 - Prob. 16TF Ch. 8 - True or False: Enumerated data types are actually...Ch. 8 - True or False: enum constants have a toString...Ch. 8 - public class MyClass { private int x; private...Ch. 8 - Assume the following declaration exists : enum...Ch. 8 - Consider the following class declaration: public...Ch. 8 - Consider the following class declaration: public...Ch. 8 - A pet store sells dogs, cats, birds, and hamsters....Ch. 8 - Prob. 1SA Ch. 8 - Prob. 2SA Ch. 8 - Prob. 3SA Ch. 8 - Even if you do not write an equals method for a...Ch. 8 - A has a relationship can exist between classes....Ch. 8 - Prob. 6SA Ch. 8 - Is it advisable or not advisable to write a method...Ch. 8 - Prob. 8SA Ch. 8 - Look at the following declaration: enum Color {...Ch. 8 - Assuming the following enum declaration exists:...Ch. 8 - Under what circumstances does an object become a...Ch. 8 - Area Class Write a class that has three overloaded...Ch. 8 - BankAccount Class Copy Constructor Add a copy...Ch. 8 - Carpet Calculator The Westfield Carpet Company has...Ch. 8 - LandTract Class Make a LandTract class that has...Ch. 8 - Month Class Write a class named Month. The class...Ch. 8 - CashRegister Class Write a CashRegister class that...Ch. 8 - Sales Receipt File Modify the program you wrote in...Ch. 8 - Parking Ticket Simulator For this assignment you...Ch. 8 - Geometry Calculator Design a Geometry class with...Ch. 8 - Car Instrument Simulator For this assignment, you...Ch. 8 - First to One Game This game is meant for two or...Ch. 8 - Heads or TaiLs Game This game is meant for two or...

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