Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
7th Edition
ISBN: 9780134802213
Author: Tony Gaddis
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 6.2, Problem 6.13CP
Program Plan Intro
Object:
A variable or any element is considered as an object when it has states and behaviors. It is the commodity or entity which is created to perform the tasks according to the plan.
Class:
In simple words class can be defined as the template or blueprint that describes the state or behavior of the object. Class is also defined as the idea or plan or structure of a real-world entity.
Relationship between a class and object:
- Class defines the properties or methods of the objects which is represented by abstraction.
- An object exhibits the methods and properties defined by the class.
- Therefore, object is known as instance of class.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
(a) Write the cinema class that contains two private data: one to hold cinema location and the other to hold the number of seats in cinema.
(b) Write the constructor foe the class that takes two parameters to set the location and the number of seats.
create a class called tour.h
it is for a company that gives tours of cities like Boston
the following are the variables for this class that customers may choose:
the durations of a tour are one and two hours
the type of vehicles are bus and boat
the daily times that tours begin are 10 am, 12 noon, and 2 pm
there are four tour guides (one of them is you! and one of them is me! choose the other two (friends or family)
include two constructors:
one will be the default and will initialize each variable to a zero or ""
the other constructor will pass arguments for each variable and assign them accordingly
include your mutator and accessor functions
for your tour.cpp file:
display a greeting to potential customers, with your name as part of the company's name
display a menu of choices for each variable, in the same order as the constructor
throw exceptions for input errors
after all user choices have been made, display everything in a confirmation report, like this:
Duration: 2…
Any variable with more than one responsibility should be replaced with multiple variables, therefore, apply the following refactoring?
Remove Middle Man
Split Variable
Extract Class
Move Field
Chapter 6 Solutions
Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
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...
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
- DateTimerPicker and MonthCalender class definitions follow.arrow_forwardWrite a class called Alien. The Alien class must have one field of type String called name, one of type String called planet and one field of type boolean called humanoid. Write one constructor that takes three parameters to initialise all of these fields. The parameters must be passed in the order name, planet and humanoid status. IntelliJ hint (this won't be in the real test): put your cursor after the last field; right-click, choose Generate, choose Constructor, select the fields that are set via parameters and click Ok. Check that the constructor is correct. Write a getter method for each field. IntelliJ hint (this won't be in the real test): put your cursor after the closing curly bracket of the constructor; right click, choose Generate, choose Getter, select all of the fields; click Ok. Check that the you have three getters. Do not write setters methods. Write a method called getDetails that will return the values of the fields in one of the following two formats. For example,…arrow_forwardIn main(), prompt the user for two items and create two objects of the ItemToPurchase class. Before prompting for the second item, call scnr.nextLine(); to allow the user to input a new string.Ex: Item 1 Enter the item name: Chocolate Chips Enter the item price: 3 Enter the item quantity: 1 Item 2 Enter the item name: Bottled Water Enter the item price: 1 Enter the item quantity: 10arrow_forward
- Sally and Harry use two separate compareTo methods for a class they're developing jointly. Sally's compareTo method delivers one of one, zero, or one plus one based on the relationship between two items. Harry's compareTo method produces a value of 6, 0, or +3. Which technique is best?arrow_forwardWhich of the following statements is false? a. A class can contain only one constructor. b. An example of a behavior is the SetTime method in a Time class. c. An object created from a class is referred to as an instance of the class. d. An instance of a class is considered an object.arrow_forwardWhich of the statements are true about the class Magazine? 01: class Magazine { 02: public: 03: Magazine (int maxSize = 100); 04: void add (Article a); 05: int numArticles() const; 06: Article getArticle (int i); 07: private: 08: Article* array; 09: int numberOfArticles; 10: }; The compiler will provide a destructor for this class. It has a default constructor It is const-correct. It has a copy constructor The programmer should provide an assignment operatorarrow_forward
- Consider the code and output below. Is Car more likely to be a struct or a class? func test(prototype: Car) -> String { prototype.speed = 100 // Assume that speed is an Int variable prototype.saveDiagnostics() // Assume saveDiagnostics stores information about changes to the car state prototype.speed = 120 prototype.saveDiagnostics() prototype.speed = 200 prototype.saveDiagnostics()return prototype.GetDiagnostics() // Assume GetDiagnostics returns a diagnostics report}var myCar = Car(speed: 0)print("Speed before testing: \(myCar.speed)")var result = test(prototype: myCar)print("Speed after testing: \(myCar.speed)") Screen output: Speed before testing: 0Speed after testing: 0 1. Car is a class 2. Car is a struct 3. Car is neither a class nor a structarrow_forwardWhich of the following are NOT true for a constructor? Select one: a. It does not return anything b. Every class must include an explicitly written constructor c. Every field in the class is initialized in the constructor. d. It must have the same name as the classarrow_forwarda) Create an enumeration named Departments that contain four set of values FINANCE, HR, IT, and MARKETING.b) Create a class named PersonDetails that contains fields for a person’s first name (String), last name (String), and address (String). The class have- A constructor that accepts parameters for each field.- Get methods for each field.c) Create a class named Employee that contains fields for an employee ID (int), Social Security number (String), personal information (Person object), department (Departments type), and annual salary (double). The class have- A constructor that requires values for each data field.- Get methods for each of the data fields.- Set methods for each of the data fields.d) Create an application/class named EmployeeSort that allows a user to enter values for an array of 5 Employee objects (create an array of Employee type that will save 5 employee objects). Prompt a user for the data needed to create an employee object. Continue to prompt the user for Social…arrow_forward
- a) Create an enumeration named Departments that contain four set of values FINANCE, HR, IT, and MARKETING.b) Create a class named PersonDetails that contains fields for a person’s first name (String), last name (String), and address (String). The class have- A constructor that accepts parameters for each field.- Get methods for each field.c) Create a class named Employee that contains fields for an employee ID (int), Social Security number (String), personal information (Person object), department (Departments type), and annual salary (double). The class have- A constructor that requires values for each data field.- Get methods for each of the data fields.- Set methods for each of the data fields.d) Create an application/class named EmployeeSort that allows a user to enter values for an array of 5 Employee objects (create an array of Employee type that will save 5 employee objects). Prompt a user for the data needed to create an employee object. Continue to prompt the user for Social…arrow_forwardList four ways you can use the this keyword within a class definitionarrow_forwardWRITE PLEASEJAVA write grading program for a class with the following grading policies. thers a total of 2 quizzes, each graded on the basis of 10 points. theeres is 1 midterm exam and one final exam, each graded on the basis of 100 points. final exam counts for 50% of the grade, the midterm counts for 25%, and the 2 quizzes together count for a total of 25%. (Do not forget to normalize the quiz scores.) letter grade will be given based on the following criterion: 90 – 100 A 80 – 89 B 70 – 79 C 60 – 69 D 0 – 59 E program will read student’s scores from a txf file, save them in an arrayor arrays), process the arrays), print the student’s record, which consists of the name, 2 quiz and 2 exam scores as well along with students avg numscore for the course and final letter rade. please noteAll the scores are integers and a student name consists of no more than 10 characters. justify output filearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENTProgramming with Microsoft Visual Basic 2017Computer ScienceISBN:9781337102124Author:Diane ZakPublisher:Cengage LearningProgramming Logic & Design ComprehensiveComputer ScienceISBN:9781337669405Author:FARRELLPublisher:Cengage
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
Programming with Microsoft Visual Basic 2017
Computer Science
ISBN:9781337102124
Author:Diane Zak
Publisher:Cengage Learning
Programming Logic & Design Comprehensive
Computer Science
ISBN:9781337669405
Author:FARRELL
Publisher:Cengage