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
Textbook Question
Chapter 6, Problem 3MC
An object is a(n) ________.
- a. blueprint
- b. primitive data type
- c. variable
- d. instance of a class
Expert Solution & Answer
Learn your wayIncludes step-by-step video
schedule03:24
Students have asked these similar questions
1. Create a class called Student, with the following attributes/variables:a. studentName (String)b. studentNumber (int)sc. regYear(long)d. faculty(String)e. department(String)2. Add the following methods in Student:a. accessors and mutators for all variablesb. toString methodi. Formulate your toString so that it only shows studentName,studentNumber and faculty3. Create a class called MyFriends, with the following attributes variables:a. studentArray(Student[])4. Add the following methods in MyFriends:a. fillArrayi. Using scanner ask how many students does the user want to inputii. Capture user input for all of his friends(Of course we are assuming all your friends would be similarUWC students, go ask around and meet new friends, alsopreferably not in the same Computer Science department … ifpossible … only if possible)b. maini. Call the fillArray methodii. Count how many Computer Science studentsiii. If half or more students are Computer Science students, thendisplay “You … need more…
Create a class called Student to represent a Student exam grades. The class has four instance variables: A String variable for the name, and three double variables to store three exams grades for the student.
Write a mutator method that takes four parameters—A String and three doubles. Use these parameters to initialize the instance variables declared earlier.
Write a getAverage method that calculates and returns the average of the three exam grades.
Write a separate program that creates 2 Student objects to hold the following data.
First Name
Exam#1
Exam#2
Exam#3
Ahmed
83.0
95.5
90.0
Kareema
75.25
83.0
89.0
Output the name and average grade for each of the above students.
(The Rectangle class)
Following the example of the Circle class in Section 8.2,design a class named Rectangle to represent a rectangle. The class contains:■ Two double data fields named width and height that specify the width andheight of the rectangle. The default values are 1 for both width and height.■ A no-arg constructor that creates a default rectangle.■ A constructor that creates a rectangle with the specified width and height.■ A method named getArea() that returns the area of this rectangle.■ A method named getPerimeter() that returns the perimeter.Draw the UML diagram for the class and then implement the class. Write a testprogram that creates two Rectangle objects—one with width 4 and height 40and the other with width 3.5 and height 35.9. Display the width, height, area,and perimeter of each rectangle in this order.
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...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Explain what can be done with primary keys to eliminate key ripple effects as a database evolves.
Modern Database Management
Interest on a loan is paid on a declining balance, and hence a loan with an interest rate of, say, 14 percent c...
Problem Solving with C++ (10th Edition)
Pennies for Pay Write a program that calculates the amount of money a person would earn over a period of time i...
Starting Out with Python (3rd Edition)
Box Office A movie theater only keeps 80 percent of the revenue earned from ticket sales. The other 20 percent ...
Starting Out with C++: Early Objects (9th Edition)
Bond Yield One measure of a bond's performance is its Yield To Maturity (YTM). YTM values for government bonds ...
Introduction To Programming Using Visual Basic (11th Edition)
Why does the following version of refundBalance not give the same results as the original? publicintrefundBalan...
Objects First with Java: A Practical Introduction Using BlueJ (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
- PYTHON PLEASE Design a class named Triangle that extends the GeometricObject super class. The Triangle class contains: Three float data fields named side1, side2, and side3 to denote the three sides of the triangle. A constructor that creates a triangle with the specified side1, side2, and side3 with default values 1.0. The accessor methods for all three data fields. A method named getArea() that returns the area of this triangle. A method named getPerimeter() that returns the perimeter of this triangle. A method named __str__() that returns a string description for the triangle. Formula to compute the area of a triangle, . Where The __str__() method is implemented as follows: return "Triangle: side1 = " + str(side1) + " side2 = " + str(side2) + “ side3 = " + str(side) Draw the UML diagrams for the classes Triangle and GeometricObject. Implement the Triangle class. Write a test program that prompts the user to enter the three sides of the triangle, a color, and 1 or 0 to…arrow_forwardThe Rectangle class) Following the example of the Circle class in Section 9.2, design a class named Rectangle to represent a rectangle. The class contains: ■ Two double data fields named width and height that specify the width and height of the rectangle. The default values are 1 for both width and height. ■ A no-arg constructor that creates a default rectangle. ■ A constructor that creates a rectangle with the specified width and height. ■ A method named getArea() that returns the area of this rectangle. ■ A method named getPerimeter() that returns the perimeter.Draw the UML diagram for the class and then implement the class. Write a test program that creates two Rectangle objects—one with width 4 and height 40and the other with width 3.5 and height 35.9. Display the width, height, area, and perimeter of each rectangle in this order.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
- 1. Create a project in NetBeans and name the project Hw06. 2. The class will contain the following static methods: reverseS – A method that displays a string reversely on the console using the following signature: publicstaticvoidreverseS(Strings) printSub1 – print all substrings of a string NOTE: duplicated substrings are allowed, but loops are not allowed The method signature: public static void printSub1(String s) printSub2 – print all substrings of a string NOTE: duplicated substrings are not allowed, but loops are allowed The method signature: public static void printSub2(String s) Note: All methods should be RECURSIVE. Any predefined classes that are based on Set are not allowed. In the main method, read a string from the user and output the reversed string and substrings to the screen: Sample Run: Please input a string: abcdThe reversed string: dcbaThe substrings of the input string: abcd abc ab a b bc b c bcd bc b c cd c d The substrings of the input string: a ab abc abcd b…arrow_forwardcreate a class named checkup with fields that you read a patient number, blood pressure figures (systolic or diastolic), and two cholesterol figures (ldl and hdl). include a method named computeratio() that divides ldl cholesterol by hdl cholesterol and displays the result. include an additional method named explainratio() that explains that hdl is knowns as “good cholesterol” and that a ratio of 3.5 or lower is considered optimum pseudo codearrow_forwardI have been posting the same questions but they always come with the same answer that does not use the starting code given below. Please make sure to use the following code as a starting point. Also, please make sure to use the same class name so that I don't get confused. Please use the information in the screenshot to create a class called BST. The base of the code is given below. Base of class Node public class Node {int key;Node left, right, parent; public Node() {} public Node(int num) {key = num;left = null;right = null;parent = null;}} Base of class BST import java.util.*; class BST {// do not change thisprivate Node root;private ArrayList<Integer> data; // DO NOT MODIFY THIS METHODpublic BST() {root = null;data = new ArrayList<Integer>(0);} // DO NOT MODIFY THIS METHODpublic ArrayList<Integer> getData() {return data;} // DO NOT MODIFY THIS METHODpublic void inOrderTraversal() {inOrderTraversal(root);} // DO NOT MODIFY THIS METHODprivate void…arrow_forward
- I am trying to create a class that follows these instructions. My code so far is listed at the bottom. Create a class called Game Info Use the class specification below:/*** Represents the information about a gamer on a* service like Steam, etc.** @author <put your name here>**/ GamerProfile should have the following instance variables: userName of type String pvpEnabled of type boolean online of type boolean gameLibrary of type ArrayList<GameInfo> My code: /** * Represents the information about a gamer on a * service like Steam, etc. * * @author lkelly * */ public class GamerProfile { public String userName; boolean pvpEnabled; boolean online; }arrow_forwardCreate a class called Date that includes three instance variables-a month (type int), a day (type int) and a year (type int). Provide a constructor that initializes the three instance variables and assumes that the values provided are correct. Provide a set and a get method for each instance variable. Provide a method displayDate that displays the month, day and year separated by forward slashes (/). Add a main method to the class that demonstrates class Date's capabilities.arrow_forwardPlease provide JAVA source code for following assignment with proper comments. Please use basic While/for/ case/ loop for source code, I just started learning and doesn't know a lot about computer programming. 1. Employee Class Write a class named Employee that has the following fields: name. The name field references a String object that holds the employee’s name. idNumber. The idNumber is an int variable that holds the employee’s ID number. department. The department field references a String object that holds the name of the department where the employee works. position. The position field references a String object that holds the employee’s job title. The class should have the following constructors: A constructor that accepts the following values as arguments and assigns them to the appropriate fields: employee’s name, employee’s ID number, department, and position. A constructor that accepts the following values as arguments and assigns them to the appropriate…arrow_forward
- In this lab, you will create a programmer-defined class and then use it in a Java program. The program should create two Rectangle objects and find their area and perimeter. Instructions Make sure the class file named Rectangle.java is open. In the Rectangle class, create two private attributes named length and width. Both length and width should be data type double. Write public set methods to set the values for length and width. Write public get methods to retrieve the values for length and width. Write a public calculateArea()method and a public calculatePerimeter() method to calculate and return the area of the rectangle and the perimeter of the rectangle. Open the file named MyRectangleClassProgram.java. In the MyRectangleClassProgramclass, create two Rectangle objects named rectangle1 and rectangle2. Set the length of rectangle1 to 10.0 and the width to 5.0. Set the length of rectangle2 to 7.0 and the width to 3.0. Print the value of rectangle1’s perimeter and area, and then…arrow_forwardCreate a class Car with parameters companyName, color, maxSpeed (Not more than 150) andcategory. Use appropriate data types and access specifiers. Use default constructor to create objectsof cars. (JAVA)arrow_forwardYou will create a class called Square. Length will represent the length of one side which is an integer.You should create the constructor, an instance variable, a getter method for the length of a side, a getArea method and a toString method. The area of a square = length * length.Your toString method should be written such that it would return a String of the form "Square with side length: 8” (if the side length was 8) public class Square { //create one instance variable called length //create the constructor with one parameter //create your getter method to get the length of one side with return type integer //create the getArea method with return type integer //create the toString method }arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENTEBK JAVA PROGRAMMINGComputer ScienceISBN:9781305480537Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENTProgramming Logic & Design ComprehensiveComputer ScienceISBN:9781337669405Author:FARRELLPublisher:Cengage
- Microsoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,
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
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,
Memory Management Tutorial in Java | Java Stack vs Heap | Java Training | Edureka; Author: edureka!;https://www.youtube.com/watch?v=fM8yj93X80s;License: Standard YouTube License, CC-BY