Microsoft Visual C#
7th Edition
ISBN: 9781337102100
Author: Joyce, Farrell.
Publisher: Cengage Learning,
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 9, Problem 8RQ
Assume that you have created a class named MyClass. The header of the MyClass constructor can be ____________.
- public MyClass()
- public MyClass (double d)
- Either of these can be the constructor header.
- Neither of these can be the constructor header.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Create a class named FootballTeam. Include two fields that hold data about theteams participating in the game. Also include a field for game time (for example, 5PM). Include a constructor that takes parameters for two FootballTeam objects anda time. From the main method, instantiate a FootballTeam object, then pass theGame to a method that displays the details about the FootballTeam.
Create a class named BloodData that includes fields that hold a blood type (the four blood types are O, A, B, and AB) and a Rh factor (the factors are + and –). Create a default constructor that sets the fields to O and +, and an overloaded constructor that requires values for both fields. Include get and set methods for each field.
Create a class named Patient that includes id, age, and bloodData fields. Provide a default constructor that sets the ID number to 0, the age to 0, and the BloodData values to O and +. Create an overloaded constructor that provides values for each field. Also provide get methods for each field.
The TestBloodData.java and TestPatient.java files have been provided to test your implementation of each class.
Code is in java.
Create an application named PhotoDemo that demonstrates the methods of three related classes for a company that develops photographs.Create a class named Photo that includes fields for width and height in centimeters and properties for each field. Include a protected price field, and set it to $3.99 for an 8-inch by 10-inch photo, $5.99 for a 10-inch by 12-inch photo, and $9.99 for any other size (because custom cutting is required). The price field requires a get accessor but no set accessor. Also include a ToString() method that returns a string constructed from the values of the fields. Derive two subclasses MattedPhoto and FramedPhoto. The MattedPhoto class includes a string field to hold a color, and the FramedPhoto class includes two string fields that hold the frame’s material (such as silver) and style (such as modern). The price for a MattedPhotoincreases by $10 over its base cost, and the price for a FramedPhoto increases by $25 over its base cost. Each subclass should…
Chapter 9 Solutions
Microsoft Visual C#
Ch. 9 - Assume that you have created a class named...Ch. 9 - Prob. 9RQCh. 9 - Assume that you have created a class named...Ch. 9 - Create an application named SalesTransactionDemo...Ch. 9 - Create an application named CarDemo that declares...Ch. 9 - Create a program named SalesTaxDemo that declares...Ch. 9 - Prob. 8ECh. 9 - Write a program named DemoJobs for Harolds Home...Ch. 9 - a. Write a FractionDemo program that instantiates...Ch. 9 - Prob. 1DE
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
- In Chapter 9, you created a Contestant class for the Greenville Idol competition. The class includes a contestants name, talent code, and talent description. The competition has become so popular that separate contests with differing entry fees have been established for children, teenagers, and adults. Modify the Contestant class to contain a field that holds the entry fee for each category, and add get and set accessors. Extend the Contestant class to create three subclasses: ChildContestant, TeenContestant, and AdultContestant. Child contestants are 12 years old and younger, and their entry fee is $15. Teen contestants are between 13 and 17 years old, inclusive, and their entry fee is S20. Adult contestants are 18 years old and older, and their entry fee is $30. In each subclass, set the entry fee field to the correct value, and override the Tostring() method to return a string that includes all the contestant data, including the age category and the entry fee. Modify the GreenvilleRevenue program so that it performs the following tasks: The program prompts the user for the number of contestants in this years competition, which must be between 0 and 30. The program continues to prompt the user until a valid value is entered. The program prompts the user for names, ages, and talent codes for the contestants entered. Along with the prompt for a talent code, display a list of valid categories. Based on the age entered for each contestant, create an object of the correct type (adult, teen, or child), and store it in an array of Contestant objects. After data entry is complete, display the total expected revenue, which is the sum of the entry fees for the contestants. After data entry is complete, display the valid talent categories and then continuously prompt the user for talent codes, and display all the data for all the contestants in each category. Display an appropriate message if the entered code is not a character or a valid code.arrow_forwardCreate an application class named LetterDemo that instantiates objects of two classes named Letter and CertifiedLetter and that demonstrates all their methods. The classes are used by a company to keep track of letters they mail to clients. The Letter class includes auto-implemented properties for the name of the recipient and the date mailed. Also, include a ToString() method that overrides the Object classs ToString() method and returns a string that contains the name of the class (using CetType and the Letters data field values. Create a child class named CertifiedLetter that includes an auto-implemented property that holds a tracking number for the letter.arrow_forwardWrite a program named SalespersonDemo that instantiates objects using classes named Real EstateSalesperson and GirlScout. Demonstrate that each object can use a SalesSpeech() method appropriately. Also, use a MakeSale() method two or three times with each object, and display the final contents of each objects data fields. First, create an abstract class named Salesperson. Fields include first and last names; the Salesperson constructor requires both these values. Include properties for the fields. Include a method that returns a string that holds the Salespersons full name—the first and last names separated by a space. Then perform the following Create two child classes of Salesperson: Real EstateSalesperson and Girl Scout. The Real EstateSalesperson class contains fields for total value sold in dollars and total commission earned (both of which are initialized to 0), and a commission rate field required by the class constructor. The Girl Scout class includes a field to hold the number of boxes of cookies sold, which is initialized to 0. Include properties for every field. Create an interface named ISell able that contains two methods: SalesSpeech() and MakeSale(). In each Real EstateSalesperson and Girl Scout class, implement SalesSpeech() to display an appropriate one- or two-sentence sales speech that the objects of the class could use. In the Real Estatesalesperson class, implement the MakeSale() method to accept an integer dollar value for a house, add the value to the Real EstateSalespersons total value sold, and compute the total commission earned. In the Girl Scout class, implement the MakeSale() method to accept an integer representing the number of boxes of cookies sold and add it to the total field.arrow_forward
- Create a class named Person that holds the following fields: two String objectsfor the person’s first and last name and a LocalDate object for the person’sbirthdate. Create a class named Couple that contains two Person objects. Create aclass named Wedding for a wedding planner that includes the date of the wedding,the names of the Couple being married, and a String for the location. Provideconstructors for each class that accept parameters for each field, and provide getmethods for each field. Then write a program that creates two Wedding objectsand in turn passes each to a method that displays all the details. Save the files asPerson.java, Couple.java, Wedding.java, and TestWedding.java.arrow_forwardCreate a class called Employee that contains two attributes: name and number. Next, write a class named Production Worker that is a subclass of the Employee class. The Production Worker class should add extra attributes called shift_number (an integer, either 1 or 2) and pay_rate. Write the appropriate accessor and mutator methods for each class. Once you have written the classes, write a program that creates an object of the Employee class and an object of the Production Worker class and prompts the user to enter data for each of the object's data attributes. Store the data in the object, then use the object's accessor methods to retrieve it and display it on the screen.arrow_forwardCreate a class called Person that will hold information about a single individual. This class should have a data section that consists of the following: Variable Name Data Type firstName string lastName string address string The Person class should have the following mutators: setFirstName(string first); setLastName(string last); setAddress(string address); The Person class should have the following accessors: string getFirstName(); string getLastName(); string getAddress(); The Person class should have the following constructors: Person(); - default Person(string first, string last); - Set other fields to an empty string Person(string first, string last, string address); Note: You must use delegating constructors to eliminate duplicate code. Main Create an array which will hold 5 Person classes. Pass the array to a function called getPeople which will fill out the array with information about people taken from the keyboard. Create a…arrow_forward
- a. Modify the FitnessTracker class that includes data fields for a fitness activity, the number of minutes spent participating, and the date. The class includes methods to get each field. In addition, create a default constructor that automatically sets the activity to running, the minutes to 0, and the date to January 1 of the current year. Create an application that demonstrates each method works correctly. b. Create an additional overloaded constructor for the FitnessTracker class you created in Exercise 3a. This constructor receives parameters for each of the data fields and assigns them appropriately. Add any needed statements to the TestFitnessTracker.java application to ensure that the overloaded constructor worksarrow_forwardGiven the following interface, create a class named Tesla that implements the Car interface. public interface Car { public double speedUp(); public double slowDown(); public String returnCarName(); } Tesla should have the following: Member variable named ‘speed’ of type int Member variable named ‘carName’ of type String Default Constructor and Constructor that accepts the two member variables as arguments The default speed should be 0 The default car name should be ‘Model 3’ To increase the car’s speed, you increment speed by 1 To decrease the car’s speed, you decrement speed by 1 You only need to create the Tesla class. You do not have to use the interface and class in a working program.arrow_forwardPart A Create a class named JobApplicant that holds data about a job applicant. Include a name as name, a phone number as phone, and four Boolean fields that represent whether the applicant is skilled in each of the following areas: word processing as hasWordSkill, spreadsheets as hasSpreadsheetSkill, databases as hasDatabaseSkill, and graphics as hasGraphicsSkill. Include a blank constructor that takes no arguments and an overloaded constructor that accepts values for each of the fields. Also include a get method for each field. Part B Create an application called TestJobApplicants that instantiates three JobApplicant objects in the main() method. Pass each object, in turn, to a method called getData() that gets user data for each field: the user enters Strings for the name and phone number, and enters four integers that indicate whether the applicant possesses each of the four skills. Return a complete JobApplicant object to the main() method. After the objects are returned to the…arrow_forward
- Create an application named ShapesDemo that creates several objects that descend from an abstract class called GeometricFigure. Each GeometricFigure includes a height, a width, and an area. Provide get and set accessors for each field except area; the area is computed and is read-only. Include an abstract method called ComputeArea() that computes the area of the GeometricFigure. Next you will create three additional classes derived from the GeometricFigure class. Name these derived classes: Rectange, Square, and Triangle Create a Rectangle is a GeometricFigure whose area is determined by multiplying width by height. Create a Square is a Rectangle in which the width and height are the same. Provide a constructor that accepts both height and width, forcing them to be equal if they are not. Provide a second constructor that accepts just one dimension and uses it for both height and width. The Square class uses the Rectangle’s ComputeArea() method. Create a Triangle is a GeometricFigure…arrow_forwardCreate an application named ShapesDemo that creates several objects that descend from an abstract class called GeometricFigure. Each GeometricFigure includes a height, a width, and an area. Provide get and set accessors for each field except area; the area is computed and is read-only. Include an abstract method called ComputeArea() that computes the area of the GeometricFigure. Next you will create three additional classes derived from the GeometricFigure class. Name these derived classes: Rectange, Square, and Triangle.arrow_forwardCreate a class called FinalGrade that is used to represent the points obtained in the letter grade of CSC 110 by different students. The FinalGrade class should include three pieces of information as instance variables—studentName (type String), studentID (type String), and pointsObtained (type int). Your class should have a constructor that initializes the three instance variables. Provide a set and a get method for each and every instance variable. In addition, provide a method named computeLetterGrade that returns the letter grade obtained by the student taking the pointsObtained as an argument. For the grading policy refer to CSC 110 grading scheme specified in syllabus. Write a test application named FinalGradeDriver that creates at least 3 different objects of class FinalGrade and test all the methods of class FinalGrade. Sample Output Student Name : Homer SimpsonStudent ID : S123456Points Obtained : 99Letter Grade : A Student Name : Marge SimpsonStudent ID : S234567Points…arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- Microsoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,Programming Logic & Design ComprehensiveComputer ScienceISBN:9781337669405Author:FARRELLPublisher:CengageEBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT
- EBK JAVA PROGRAMMINGComputer ScienceISBN:9781305480537Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT
Microsoft Visual C#
Computer Science
ISBN:9781337102100
Author:Joyce, Farrell.
Publisher:Cengage Learning,
Programming Logic & Design Comprehensive
Computer Science
ISBN:9781337669405
Author:FARRELL
Publisher:Cengage
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781305480537
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
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