MyLab Programming with Pearson eText -- Access Card -- for Starting Out with Java: Early Objects (Myprogramminglab)
6th Edition
ISBN: 9780134447179
Author: Tony Gaddis
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 6, Problem 1PC
Area Class
Write a class that has three overloaded static methods for calculating the areas of the following geometric shapes:
- circles
- rectangles
- cylinders
Here are the formulas for calculating the area of the shapes.
| Area of a circle: | Area = πr2 |
| Where | π is Math.PI and r is the circle’s radius |
| Area of a rectangle: | Area = Width × Length |
| Area of a cylinder: | Area = πr2h |
| Where | π is Math.PI, r is the radius of the cylinder’s base, and h is the cylinder’s height |
Because the three methods are to be overloaded, they should each have the same name, but different parameter lists. Demonstrate the class in a complete
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Problem (Circle.java)a. Implement a class called Circle for representing a circle. The circle has two data members, a Point object representing the center of the circle and a float value representing the radius. a. Include appropriate constructors for your Circle class.b. Encapsulate it.c. Also include methods for finding the area and circumference of the circle. area = pi * radius * radiuscircumference = 2 * pi * radius. (You may use the static constant pi in the Math class)d. Override the toString() and equals().e. Write a simple main method that creates Circle objects and tests each of the methods that you have defined.
Quadratic equations
The form of a quadratic equation is ax2 + bx + c = 0.
Write a program that solves a quadratic equation in all cases, including when both roots are complex numbers. Remember that the solutions are
x = (-b + sqrt(b2 -4ac))/2a and (-b - sqrt(b2 -4ac))/2a
For this you will need to set up the following classes:
Complex: Encapsulates a complex number.
ComplexPair: Encapsulates a pair of complex numbers.
Quadratic: Encapsulates a quadratic equation. – Assume the coefficients are all of type int for this example.
SolveEquation: Contains the main method. (I give this to you it is shown below)
Along with the usual constructors, accessors and mutators you will need the following additional methods:
In the Complex class a method called isReal to determine whether a complex object is real or not returning a boolean value.
In the ComplexPair class a method bothIdentical that determines if both complex numbers are identical, returning a boolean value.
In the…
JAVA PROGRAMMING
Write two java files for this assignment: Circle.java, and Main.java.
The Circle.java file will create an actual class.
The Circle class:
MEMBER VARIABLE
double radius
double x
double y
Eight methods:
Six of the methods are simple: getter’s and setter’s for x, y, and radius.
There should also be a getArea method that returns the area (derived from the radius)
A doesOverlap method. This method should accept a Circle as an argument, and return true if this circle overlaps the circle that the method was invoked on. [Note: two circles overlap if the sum of their radius' is greater than or equal to the distance between their centers.]
void setX(double value)
double getX()
void setY(double value)
double getY()
void setRadius(double value)
double getRadius()
double getArea()
boolean doesOverlap(Circle otherCircle)
second class will be the typical replit Main class, with its static main method .It should contain code that tests the Circle class. submit code that…
Chapter 6 Solutions
MyLab Programming with Pearson eText -- Access Card -- for Starting Out with Java: Early Objects (Myprogramminglab)
Ch. 6.1 - Prob. 6.1CPCh. 6.1 - Prob. 6.2CPCh. 6.1 - Describe the limitation of static methods.Ch. 6.3 - Prob. 6.4CPCh. 6.3 - What is a methods signature?Ch. 6.3 - Prob. 6.6CPCh. 6.3 - How many default constructors may a class have?Ch. 6.4 - Prob. 6.8CPCh. 6.4 - Prob. 6.9CPCh. 6.4 - Prob. 6.10CP
Ch. 6.5 - Recall the Rectangle class shown earlier in this...Ch. 6.9 - Consider the following statement: A car has an...Ch. 6.9 - Why is it not safe to return a reference to an...Ch. 6.9 - A class has a reference variable as an instance...Ch. 6.10 - Prob. 6.15CPCh. 6.12 - Look at the following statement, which declares an...Ch. 6.12 - Assume that the following enumerated data type has...Ch. 6.12 - Prob. 6.18CPCh. 6 - This type of method cannot access any non-static...Ch. 6 - Prob. 2MCCh. 6 - Prob. 3MCCh. 6 - Prob. 4MCCh. 6 - If you write this method for a class, Java will...Ch. 6 - Making an instance of one class a field in another...Ch. 6 - This is the name of a reference variable that is...Ch. 6 - This enum method returns the position of an enum...Ch. 6 - Assuming the following declaration exists: enum...Ch. 6 - You cannot use the fully qualified name of an enum...Ch. 6 - The Java Virtual Machine periodically performs...Ch. 6 - If a class has this method, it is called...Ch. 6 - CRC stands for a. Class, Return value, Composition...Ch. 6 - Prob. 11MCCh. 6 - True or False: A static member method may refer to...Ch. 6 - True or False: All static member variables are...Ch. 6 - Prob. 18TFCh. 6 - Prob. 19TFCh. 6 - Prob. 21TFCh. 6 - True or False: Enumerated data types are actually...Ch. 6 - True or False: enum constants have a toString...Ch. 6 - True or False: A class may not have more than one...Ch. 6 - True or False: A private class that is defined...Ch. 6 - public class MyClass { private int x; private...Ch. 6 - public class TwoValues { private int x, y; public...Ch. 6 - public class MyMath { public static int square(int...Ch. 6 - Assume the following declaration exists : enum...Ch. 6 - l. Consider the following class declaration:...Ch. 6 - A pet store sells dogs, cats, birds, and hamsters....Ch. 6 - Prob. 1SACh. 6 - Prob. 2SACh. 6 - Consider the following class declaration: public...Ch. 6 - Prob. 4SACh. 6 - How does method overloading improve the usefulness...Ch. 6 - Prob. 6SACh. 6 - Even if you do not write an equals method for a...Ch. 6 - A has a relationship can exist between classes....Ch. 6 - Prob. 9SACh. 6 - Is it advisable or not advisable to write a method...Ch. 6 - Prob. 11SACh. 6 - Look at the following declaration: enum Color {...Ch. 6 - Assuming the following enum declaration exists:...Ch. 6 - Under what circumstances does an object become a...Ch. 6 - Area Class Write a class that has three overloaded...Ch. 6 - InventoryItem Class Copy Constructor Add a copy...Ch. 6 - Carpet Calculator The Westfield Carpet Company has...Ch. 6 - LandTract Class Make a LandTract class that has...Ch. 6 - Month Class Write a class named Month. The class...Ch. 6 - Employee Class Modification In Programming...Ch. 6 - RetailItem Class Modification Modify this chapters...Ch. 6 - Sales Receipt File Modify the program you wrote in...Ch. 6 - Parking Ticket Simulator For this assignment you...Ch. 6 - Geometry Calculator Design a Geometry class with...Ch. 6 - Car Instrument Simulator For this assignment, you...Ch. 6 - First to One Game This game is meant for two or...Ch. 6 - Heads or TaiLs Game This game is meant for two or...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Write the definition for a void function called toScreen. The function toScreen has one formal parameter called...
Problem Solving with C++ (9th Edition)
Can you think of a good reason to avoid writing statements in a class member function that use cout or cin?
Starting Out with C++ from Control Structures to Objects (9th Edition)
The ____________ is always transparent.
Web Development and Design Foundations with HTML5 (9th Edition) (What's New in Computer Science)
The ________ object is assumed to exist and it is not necessary to include it as an object when referring to it...
Web Development and Design Foundations with HTML5 (8th Edition)
What is pseudocode?
Starting Out With Visual Basic (8th Edition)
What is an object?
Starting Out with Programming Logic and Design (4th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- Problem (Circle.java) Implement a class called Circle for representing a circle. The circle has two data members, a Point object representing the center of the circle and a float value representing the radius. Include appropriate constructors for your Circle class. Encapsulate it. Also include methods for finding the area and circumference of the circle. area = pi * radius * radius circumference = 2 * pi * radius. (You may use the static constant pi in the Math class) 5. Override the toString() and equals().arrow_forwardUSING C++ Random Number Guesser Write a derived class of the NumberGuesser class named RandomNumberGuesser. The derived class should override the behavior of the getCurrentGuess method. It may also add member data and its own constructor. It may also override the higher(), lower() and reset() methods as you see fit. I have written a NumberGuesser class to make things easier. // NumberGuesser.h #ifndef NUMBERGUESSER_H #define NUMBERGUESSER_H #include <iostream> class NumberGuesser { protected: int low; int originalLow; int high; int originalHigh; public: NumberGuesser(int l, int h) { low = originalLow = l; high = originalHigh = h; } virtual int getCurrentGuess() { return (high + low) / 2; } virtual void higher() { low = getCurrentGuess() + 1; } virtual void lower() { high = getCurrentGuess() - 1; } virtual void reset() { low = originalLow; high = originalHigh;…arrow_forward1. Design a new Triangle class that extends the abstract GeometricObject class. Draw the UML diagram for the classes Triangle and GeometricObject then implement the Triangle class. Write a test program that prompts the user to enter three sides of the triangle, a color, and a Boolean value to indicate whether the triangle is filled. The program should create a Triangle object with these sides, and set the color and filled properties using the input. The program should display the area, perimeter, color, and true or false to indicate whether it is filled or not.using java programmingarrow_forward
- c++ Declare an Animal class that has the attributes of Name, Genus, and Weight. Declare four (4) specific animal classes that inherit attributes from the Animal class. In the lab we built two, Duck and Butterfly. Implement show() and speak() methods for each subclass. These methods will also be virtual classes in Animal and will allow the use of an array of Animal* in the main(). Your program should ask the user for the number of animals they would like in there zoo. Allow the user to select each animal from the animal subclasses you have implemented. Store the selections in an array of Animal*. After the user has selected all the animals, step thru the array and have each animal show() and speak() in a sort of parade of selected animals. I'm having a problem with the error message and why it won't display to ascii art and have the user input --- This is my code so far --- /* * File: Zoo.cpp * Author: * Course: CS I * Assignment: What's In Your Zoo? * Due date: 11/10/21 * *…arrow_forward7)Circle Class Write a Circle class that has the following fields: radius: a double PI:a final double initialized with the value 3.14159 The class should have the following methods: Constructor. Accepts the radius of the circles as an argument. Constructor. A no-arg constructor that sets the radius field to 0.0. setRadius. A mutator method for the radius field. getRadius.An accessor method for the radius field. area. Returns the area of the circle, which is calculated as area. Returns the area of the circles, which is calculated as area= PI * radius * radius diameter. Returns the diameter of the cirlce, which is calculated as diameter = radius * 2 circumference. Returns the circumference of the circle, which is calculated as circumference = 2 * PI * radius Write a program that demonstrates the Circle class by asking the user for the circles's radius, creating a Circle object, and then reporting the cirlce's area, diameter, and circumference.arrow_forwardTimer Class Concepts tested: Classes 1) Write a class called Timer that models a stopwatch with start, stop, and reset buttons. It has the following members: a) -int startTime; // variable tracking when the timer was started (unused when timer is not running). In number of seconds since 1970 b) -int timeOnClock; // variable tracking the time on the clock since last reset in seconds c) -bool isRunning; //variable tracking wether the clock is running or stopped d) +Timer(); //constructor, initializes all to zero/false e) +Timer(bool startNow); // constructur that starts clock automatically if startNow is true f) +int getTime(); // returns time on clock in seconds. If clock is running, this must also include the time since it was last started g) +void addTimeToClock(int seconds); // allows manually adding time to the clock h) +void reset(); // resets time on clock to zero i) +void start(); // starts clock j) +void stop(); // stops clock k)…arrow_forward
- #pyhton programing topic: Introduction to Method and Designing class Method overloading & Constructor overloading ------------------ Question 1 Suppose your little sibling wants your help to check his math homework. He is done with his homework but wants you to see if all his results are correct. Since the student with all correct results gets 3 stars. However, you want your brother to check this on his own. So, you design a calculator for him in python. You could have given your scientific calculator but you wanted to give him a basic calculator and also wanted to see if you can even design one. Subtasks: Create a class called Calculator. Your class shall have 1 constructor and 4 methods, namely add, subtract, multiply and divide. Now, create an object of your class. After creating an object, it should print “Let’s Calculate!” Then take 3 inputs from the user: first value, operator, second value 5. Now based on the given operator, call the required method and…arrow_forwardC++ Program: Random Number Guesser. Write a derived class of the NumberGuesser class named RandomNumberGuesser. The derived class should override the behavior of the getCurrentGuess method. It may also add member data and its own constructor. It may also override the higher(), lower() and reset() methods as you see fit. To get everyone started off on the same page I have written a NumberGuesser class. It is defined entirely in-line in the following file: NumberGuesser.h (Links to an external site.) https://fog.ccsf.edu/~mluttrel/cs110b/NumberGuesser.h In the current NumberGuesser class the getCurrentGuess() method returns the midpoint of the range of possible values. In your RandomNumberGuesser class the getCurrentGuess() method should return a randomly generated number in the range of possible values. Note that repeated calls to getCurrentGuess() should always return the same value for both classes if neither the higher() or the lower() functions are called. Consider the…arrow_forwardA SuperDie Class Write a class SuperDie that models a single die with an arbitrary number of sides, not just six. A die instantiated with the default constructor has six sides. The methods of this class should be: • roll a die and return its value, • return the number of sides on a die, and • change the number of sides on a die. Include a main(...) method that tests all the methods of your class.arrow_forward
- Child Class: Vegetable Write a child class called Vegetable. A vegetable is described by a name, the number of grams of sugar (as a whole number), the number of grams of sodium (as a whole number), and whether or not the vegetable is a starch. Core Class Components For the Vegetable class, write: the complete class header the instance data variables a constructor that sets the instance data variables based on parameters getters and setters; use instance data variables where appropriate a toString method that returns a text representation of a Vegetable object that includes all four characteristics of the vegetableJavaarrow_forward:Define and implement class Employee. This class should contain the following fields: first name, last name, employee id, hourly pay. This class should contain getters and setters for all its attributes. This class also needs at least one constructor. Implement method computePay() in this class. This method should accept an integer number of hours the employee worked as an input argument and return a floating point value indicating the pay the employee earned. If the number of hours is invalid (e.g. a negative number) this method should throw NumberFormatException. If the number of hours is over 40 then this method should throw a custom exception named TooManyHoursWorkedException. Remember that you will have to define your own exception class for this. Save this class and its definition into a file named Employee.java. Define and implement class EmployeeTest.This class should implement main() method. In the body of the main() method you should create an instance of Employee with the…arrow_forwardInheritance and UML (Java) Design a class named Employee. The class keeps the following information in fields: - Employee Name - Employee Number in the format XXX-L, where each X is a digit within the range 0-9 and the L is a letter within the range A-M. - Hire Date - Shift (an integer) - Hourly pay rate (a double) Write one or more constructors and the appropriate accessor and mutator methods for the class. The workday is divided into two shifts: day and night. The shift field will be an integer value representing the shift that the employee works. The day shift is shift1 and the night shift is shift 2. a) Draw a UML diagram of the class. Be sure to include notation showing each field and method’s access specification and data type. Also include notation showing any method parameters and their data types. b) Write a program that demonstrates the class.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill Education
Starting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSON
Digital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSON
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage Learning
Programmable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education
Introduction to Classes and Objects - Part 1 (Data Structures & Algorithms #3); Author: CS Dojo;https://www.youtube.com/watch?v=8yjkWGRlUmY;License: Standard YouTube License, CC-BY