STARTING OUT W/JAVA PLUS ACCESS >IP<
19th Edition
ISBN: 9780135396094
Author: MUGANDA
Publisher: PEARSON EDUCATION (COLLEGE)
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 6, Problem 3AW
Consider the following class declaration:
public class Square
{
private double sideLength;
public double getArea()
{
return sideLength * sideLength;
}
public double getSideLength()
{
return sideLength;
}
}
- a. Write a no-arg constructor for this class, it should assign the sideLength field the value 0.0.
- b. Write an overloaded constructor for this class. It should accept an argument that is copied into the sideLength field.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Consider the following class definition:
class circle { public: void print() const;
void setRadius(double);
void setCenter(double, double);
void getCenter(double&, double&);
double getRadius();
double area();
circle();
circle(double, double, double);
double, double);
private: double xCoordinate;
double yCoordinate;
double radius; }
class cylinder: public circle { public: void print() const;
void setHeight(double);
double getHeight();
double volume();
double area();
cylinder();
cylinder(double, double, private: double height; }
Suppose that you have the declaration: cylinder newCylinder;
Write the definitions of the member functions of the classes circle and cylinder. Identify the member functions of the class cylinder that overrides the member functions of the class circle
Java - Calculator Class
True or False An interface can be used to define a set of methods that a class must implement.
Chapter 6 Solutions
STARTING OUT W/JAVA PLUS ACCESS >IP<
Ch. 6.1 - What does an object use its fields for?Ch. 6.1 - Prob. 6.2CPCh. 6.1 - How is a class like a blueprint?Ch. 6.1 - You have programs that create Scanner, Random, and...Ch. 6.1 - Prob. 6.5CPCh. 6.1 - What values do reference variables hold?Ch. 6.1 - Prob. 6.7CPCh. 6.2 - You hear someone make the following comment: A...Ch. 6.2 - Prob. 6.9CPCh. 6.2 - When a variable is said to reference an object,...
Ch. 6.2 - Prob. 6.11CPCh. 6.2 - Prob. 6.12CPCh. 6.2 - Prob. 6.13CPCh. 6.2 - Prob. 6.14CPCh. 6.2 - Prob. 6.15CPCh. 6.2 - What is a stale data item?Ch. 6.3 - Assume that r1 and r2 are variables that reference...Ch. 6.4 - How is a constructor named?Ch. 6.4 - What is a constructors return type?Ch. 6.4 - Prob. 6.20CPCh. 6.7 - Prob. 6.21CPCh. 6.7 - What is a methods signature?Ch. 6.7 - Look at the following class: public class...Ch. 6.7 - How many default constructors may a class have?Ch. 6.9 - Prob. 6.25CPCh. 6.9 - When designing an object-oriented application, who...Ch. 6.9 - How do you identify the potential classes in a...Ch. 6.9 - What are a classs responsibilities?Ch. 6.9 - What two questions should you ask to determine a...Ch. 6.9 - Will all of a classs actions always be directly...Ch. 6 - This is a collection of programming statements...Ch. 6 - A class is analogous to a(n) _______. a. house b....Ch. 6 - An object is a(n) ________. a. blueprint b....Ch. 6 - This is a class member that holds data. a. method...Ch. 6 - This key word causes an object to be created in...Ch. 6 - This is a method that gets a value from a classs...Ch. 6 - This is a method that stores a value in a field or...Ch. 6 - When the value of an item is dependent on other...Ch. 6 - This is a method that is automatically called when...Ch. 6 - When a local variable has the same name as a...Ch. 6 - This is automatically provided for a class if you...Ch. 6 - Prob. 12MCCh. 6 - Prob. 13MCCh. 6 - A classs responsibilities are __________. a. the...Ch. 6 - True or False: The new operator creates an...Ch. 6 - True or False: Each instance of a class has its...Ch. 6 - True or False: When you write a constructor for a...Ch. 6 - True or False: A class may not have more than one...Ch. 6 - True or False: To find the classes needed for an...Ch. 6 - Find the error in the following class: public...Ch. 6 - Prob. 2FTECh. 6 - The following statement attempts to create a...Ch. 6 - Find the error in the following class: public...Ch. 6 - Find the error in the following class: public...Ch. 6 - Design a class named Pet, which should have the...Ch. 6 - Look at the following partial class definition,...Ch. 6 - Consider the following class declaration: public...Ch. 6 - Look at the following description of a problem...Ch. 6 - The bank offers the following types of accounts to...Ch. 6 - Assume that you are writing an application that...Ch. 6 - What is the difference between a class and an...Ch. 6 - A contractor uses a blueprint to build a set of...Ch. 6 - What is an accessor method? What is a mutator...Ch. 6 - is it a good idea to make fields private? Why or...Ch. 6 - If a class has a private field, what has access to...Ch. 6 - Prob. 6SACh. 6 - Assume a program named MailList.java is stored in...Ch. 6 - Why are constructors useful for performing...Ch. 6 - Under what circumstances does Java automatically...Ch. 6 - What do you call a constructor that accepts no...Ch. 6 - Prob. 11SACh. 6 - How does method overloading improve the usefulness...Ch. 6 - Employee Class Write a class named Employee that...Ch. 6 - Car Class Write a class named Car that has the...Ch. 6 - Personal Information Class Design a class that...Ch. 6 - Retail Item Class Write a class named RetailItem...Ch. 6 - Payroll Class Design a Payroll class that has...Ch. 6 - TestScores Class Design a TestScores class that...Ch. 6 - Circle Class Write a Circle class that has the...Ch. 6 - Temperature Class Write a Temperature class that...Ch. 6 - Days in a Month Write a class named MonthDays, The...Ch. 6 - A Game of Twenty-One For this assignment, you will...Ch. 6 - Freezing and Boiling Points The following table...Ch. 6 - SavingsAccount Class Design a SavingsAccount class...Ch. 6 - Deposit and Withdrawal Files Use Notepad or...Ch. 6 - Patient Charges Write a class named Patient that...Ch. 6 - Dice Game Write a program that uses the Die class...Ch. 6 - Roulette Wheel Colors On a roulette wheel, the...Ch. 6 - Coin Toss Simulator Write a class named Coin. The...Ch. 6 - Tossing Coins for a Dollar For this assignment you...Ch. 6 - Fishing Game Simulation For this assignment, you...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
It has been suggested that the control software for a radiation therapy machine, used to treat patients with ca...
Software Engineering (10th Edition)
Write assignments to the library, cs101. and track variables (which you defined in the previous three exercises...
Objects First with Java: A Practical Introduction Using BlueJ (6th Edition)
The Upper West View Yacht club sponsors sailboat races every weekend for its fleet of SuperGee sailboats, and w...
Starting Out With Visual Basic (8th Edition)
Modify the temperature conversion program to print a heading above the table.
C Programming Language
Revise the definition of the method readInput in Listing 5.3, using the keyword this.
Java: An Introduction to Problem Solving and Programming (7th Edition)
What is a stale data item?
Starting Out with Java: Early Objects (6th 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
- The following class declaration has errors. Locate as many as you can. class Point {private: int xCoord; int yCoord; public:Point (int x, int y) { xCoord = x; yCoord = y; } // Overloaded + operator void operator+(const &Point Right) { xCoord += right.xCoord; yCoord += right.yCoord; }... Other member functions follow ...};arrow_forwardJAVA ENCAPSULATIONarrow_forwardWhat is the output of the following code? Convert the abstract class into an interface and modify the codes in all classes that will maintain the same output. (Rewrite the code)arrow_forward
- /** NoParking models a No Parking sign */ public class NoParking { //-----------Start below here. To do: approximate lines of code = 15 // 1. Write the class so that it works as expected with the unit tester. private String startTime; private String endTime; /** Constructs a NoParking object with a default time */ public NoParking(){ startTime = "0:00"; endTime = "23:59"; } /** Sets the start time @param the start time */ public void setStartTime(String start){ startTime = start; } /** Sets the end time @param the end time */ public void setEndTime(String end){ endTime = end; } /** Reverses the times */ /** Returns the string for no parking @return the string for no parking */ } //-----------------End here. Please do not remove this…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_forwardpublic class Artwork { // TODO: Declare private fields - title, yearCreated // TODO: Declare private field artist of type Artist // TODO: Define default constructor // TODO: Define get methods: getTitle(), getYearCreated() // TODO: Define second constructor to initialize // private fields (title, yearCreated, artist) // TODO: Define printInfo() method // Call the printInfo() method in Artist.java to print an artist's information }} public class ArtworkLabel { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); String userTitle, userArtistName; int yearCreated, userBirthYear, userDeathYear; userArtistName = scnr.nextLine(); userBirthYear = scnr.nextInt(); scnr.nextLine(); userDeathYear = scnr.nextInt(); scnr.nextLine(); userTitle = scnr.nextLine(); yearCreated =…arrow_forward
- Incorrect Question 1 Consider: class Bike { } private String make; public public Bike() } // ... public Bike(String newMake) { // ... } public public Bike (Bike bike) } // ... Bike(Bike bike) is the no-arg constructor Bike() is the no-arg constructor Bike(String newMake) is the no-arg constructor This is not valid class declarationarrow_forwardIn a class with overloaded constructors, each version of the constructor must have a differentarrow_forward7arrow_forward
- The following class declaration has errors. Locate as many as you can. class Circle {private:double diameter; int centerX; int centerY; public:Circle(double d, int x, int y){ diameter = d; centerX = x; centerY = y; } // Overloaded = operatorvoid Circle=(Circle &right) { diameter = right.diameter; centerX = right.centerX; centerY = right.centerY; }... Other member functions follow ...};arrow_forwardIn-class Assignment Day 8 You should draw the hierarchy for your classes to understand how the coding should be structured. Be sure to notate any classes that are abstract. Write an abstract class for Shape. The intended subclasses are Polygon, Circle, Triangle, and Rectangle. All of these will have a name, an area, and a perimeter. (Consider which methods might be abstract.) Add a toString method that will return the information about the Shape, for example: Triangle, Area: 7.5, Perimeter: 12.0 Write the class Rectangle. A Rectangle is a Shape and should have a width and a height. When a Rectangle is outputted, it should read: Rectangle, Length: #, Width: #, Area: #, Perimeter: # Write the class for Circle. Every circle is a Shape that has a radius. Be sure to provide an accessor method (getter) for the radius. When a circle is outputted, it should read: Circle, Radius: #, Area: #, Circumference: # Write a TestShape class that has the main method, which creates…arrow_forwardDefining Classes Write and document the definition for the Money class. The Money class represents an amount in U.S. dollars. Money Class e Fields cents : int dollars : int e Methods getValue() : double Money(int d, int c) setCents(int c) : void setDollars(int d) : void toString() : String • Each Money object has two int instance variables: dollars and cents. • The class has one constructor that takes two int parameters. The first int represents whole dollars, and the second int represents cents. • The class has one accessor method named getValue() which returns the amount as a double. (Just divide cents by 100.0 and add it to dollars. Return that amount.) • The class has two mutator methods-setDollars() and setCents()–that modify the corresponding instance variables. • The class has a toString() method that returns the amount as a String in the form: $ 2345.75. Use concatenation to produce the output. Do not worry about the decimal places.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Programming Logic & Design ComprehensiveComputer ScienceISBN:9781337669405Author:FARRELLPublisher:CengageMicrosoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,
Programming Logic & Design Comprehensive
Computer Science
ISBN:9781337669405
Author:FARRELL
Publisher:Cengage
Microsoft Visual C#
Computer Science
ISBN:9781337102100
Author:Joyce, Farrell.
Publisher:Cengage Learning,
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