Java: An Introduction to Problem Solving and Programming (7th Edition)
7th Edition
ISBN: 9780133766264
Author: Walter Savitch
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 8, Problem 1E
Consider a program that will keep track of the items in a school’s library. Draw a class hierarchy, including a base class, for the different kinds of items. Be sure to also consider items that cannot be checked out.
Expert Solution & Answer
Explanation of Solution
Class hierarchy for school library:
- In the above diagram, “Library” is the base class, “Book”, “Audio visual material”, and “Periodicals” are the derived classes of the “Library”.
- The “Reference Book”, and “Text Books” are the derived classes of the “Book” class.
- The “Magazine”, and “Newspaper” are the derived classes of the “Periodicals” class.
- Here, every book must be checked out.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
This assignment is supposed to represent a group of students in a course. A group of students in a course will be assigned an assignment and produce a collection of assignment results. The results will be used to figure out grade statistics. The grade they receive for their work on the assignment is entirely dependant on the student's energy level. If the student works on many assignments without sleeping their grade will suffer. You will implement four classes (Assignment, AssignmentResult, Student, and Course), they will depend on each other in the order they are listed.
Hint: Work on the methods in the order they are found in the documentation below, implement the getter and setter methods before the more complicated methods. Work on the Assignment class, AssignmentResult class, Student class and Course class in that order.
Make sure you don't name your class variables the same name as you class's methods. In other words if you have method named id you cannot have a class…
In this lab work, you will implement a coffee shop example. In this coffee shop, everything must
progress as if it does in real life. It means that the program should ask a person for body
temperature in Celsius, and grant or reject access to a coffee shop. When a customer orders a
coffee, they have to choose a size such as Small, Medium, and Large then, depending on the
order, the price has to change. The price also has to change depending on the type of coffee.
For example, for coffees that are similar to espresso, you also need to take every shot of
espresso into account. The actual prices of the coffees depend on your imagination however,
they should be realistic.
Some hints:
• Focus on dividing your program into multiple functions.
• You can also return double or integer types of values from your functions, so use them if
you can.
• Don't just code a function every possible type of, and try to make it generic as much as
possible.
• Be creative. Fill the gaps using your…
A boatman, a wolf, a sheep, and a cabbage are on the bank of a river. They have
a small boat that is capable of carrying the boatman and at most one other
animal/item with him. However, if left alone by the boatman, the wolf can eat the
sheep, and the sheep can eat the cabbage. How can all four be moved safely to
the opposite bank of the river?
Here is a nice visualization of the whole process in the original game. Disclaimer:
writers, testers and CodeChef are not related to this link.
This leads to a more general problem. If there are other groups of animals/items
with the boatman, is it possible to move them all to the opposite bank of the river in
such a way that nobody/nothing gets eaten?
We will give you the number of animals/items (not including the boatman).
Moreover, we will give you all a list of pairs of the form "X Y" where the X-th
animalitem will be eaten by the Y-th one if they are both on the opposite bank to
the boatman.
You are to determine whether it is possible to…
Chapter 8 Solutions
Java: An Introduction to Problem Solving and Programming (7th Edition)
Ch. 8.1 - Prob. 1STQCh. 8.1 - Suppose the class SportsCar is a derived class of...Ch. 8.1 - Suppose the class SportsCar is a derived class of...Ch. 8.1 - Can a derived class directly access by name a...Ch. 8.1 - Can a derived class directly invoke a private...Ch. 8.1 - Prob. 6STQCh. 8.1 - Suppose s is an object of the class Student. Base...Ch. 8.2 - Give a complete definition of a class called...Ch. 8.2 - Add a constructor to the class Student that sets...Ch. 8.2 - Rewrite the definition of the method writeoutput...
Ch. 8.2 - Rewrite the definition of the method reset for the...Ch. 8.2 - Can an object be referenced by variables of...Ch. 8.2 - What is the type or types of the variable(s) that...Ch. 8.2 - Prob. 14STQCh. 8.2 - Prob. 15STQCh. 8.2 - Consider the code below, which was discussed in...Ch. 8.2 - Prob. 17STQCh. 8.3 - Prob. 18STQCh. 8.3 - Prob. 19STQCh. 8.3 - Is overloading a method name an example of...Ch. 8.3 - In the following code, will the two invocations of...Ch. 8.3 - In the following code, which definition of...Ch. 8.4 - Prob. 23STQCh. 8.4 - Prob. 24STQCh. 8.4 - Prob. 25STQCh. 8.4 - Prob. 26STQCh. 8.4 - Prob. 27STQCh. 8.4 - Prob. 28STQCh. 8.4 - Are the two definitions of the constructors given...Ch. 8.4 - The private method skipSpaces appears in the...Ch. 8.4 - Describe the implementation of the method drawHere...Ch. 8.4 - Is the following valid if ShapeBaSe is defined as...Ch. 8.4 - Prob. 33STQCh. 8.5 - Prob. 34STQCh. 8.5 - What is the difference between what you can do in...Ch. 8.5 - Prob. 36STQCh. 8 - Consider a program that will keep track of the...Ch. 8 - Implement your base class for the hierarchy from...Ch. 8 - Draw a hierarchy for the components you might find...Ch. 8 - Suppose we want to implement a drawing program...Ch. 8 - Create a class Square derived from DrawableShape,...Ch. 8 - Create a class SchoolKid that is the base class...Ch. 8 - Derive a class ExaggeratingKid from SchoolKid, as...Ch. 8 - Create an abstract class PayCalculator that has an...Ch. 8 - Derive a class RegularPay from PayCalculator, as...Ch. 8 - Create an abstract class DiscountPolicy. It should...Ch. 8 - Derive a class BulkDiscount from DiscountPolicy,...Ch. 8 - Derive a class BuyNItemsGetOneFree from...Ch. 8 - Prob. 13ECh. 8 - Prob. 14ECh. 8 - Create an interface MessageEncoder that has a...Ch. 8 - Create a class SubstitutionCipher that implements...Ch. 8 - Create a class ShuffleCipher that implements the...Ch. 8 - Define a class named Employee whose objects are...Ch. 8 - Define a class named Doctor whose objects are...Ch. 8 - Create a base class called Vehicle that has the...Ch. 8 - Create a new class called Dog that is derived from...Ch. 8 - Define a class called Diamond that is derived from...Ch. 8 - Prob. 2PPCh. 8 - Prob. 3PPCh. 8 - Prob. 4PPCh. 8 - Create an interface MessageDecoder that has a...Ch. 8 - For this Programming Project, start with...Ch. 8 - Modify the Student class in Listing 8.2 so that it...Ch. 8 - Prob. 8PPCh. 8 - Prob. 9PPCh. 8 - Prob. 10PP
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Write an expression that rounds up a double value in variable d to an integer.
Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
Write for statements that print the following sequences of values: 1, 2, 3, 4, 5, 6, 7 3, 8, 13, 18, 23 20, 14,...
C How to Program (8th Edition)
Explain why the rapid delivery and deployment of new systems is often more important to businesses than the det...
Software Engineering (10th Edition)
State whether each of the following is true or false. If false, explain why. All expression containing the | | ...
Java How to Program, Early Objects (11th Edition) (Deitel: How to Program)
Explain how entities are transformed into tables.
Database Concepts (7th Edition)
Listed below are definitions of two classes that use inheritance, code for their implementation, and a main fun...
Problem Solving with C++ (10th 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
- Read the following scenario: To implement an exam, an instructor first notifies the students of the exam date and the topics to be covered. The instructor will prepare the exam paper, gets it copied to produce enough copies for the class, and hands it out to students at the designated time and location. The students attempt their answers to exam questions and hand in their answer papers to the instructor. The instructor then gives the answer papers to the tutor, along with sample solutions to each question, and gets them to mark it. The tutor will then records all the marks and return the answer papers to the students. After the answer papers have been returned to the students, they can raise any issues or queries about the marks they received. The instructor then reviews these queries/issues and decides whether marks adjustments are needed. If there are marks adjustments, the instructor will request the tutor to make the necessary changes in the marks record. Draw a sequence diagram…arrow_forwardDraw the UML diagram for the classes and implement them. Write a test program that creates a Person, Student, Employee, Faculty, and Staff, and invokes their toString() methods.arrow_forwardIn programming, we use the mask concept to indicate information that can be shown to the user and information that must be “masked”, that is, hidden. In an implementation of a hangman game, we use a mask to indicate which secret word positions the player has already guessed right (whose the contents must therefore be shown to the player), and which positions must remain hidden. Each time that the player hits a letter of the hidden word, the mask is updated so that it has little dashes in the places of letters that the player has not hit yet and show it, in their proper place, the letters that he already hit it. For example, if the word is "cards", the current mask is: - a - - s and the player guesses the letter "d", the mask should be updated to: - a - ds.Write a function called update_mask that takes as input a string containing the word secret (in the example above, this word would be “cards”), a list whose elements are the characters of the current mask (in the example above…arrow_forward
- Please read the thickened sentences below In this game, one flyand three frogs are placed randomly on a board with the size 7x7.In each iteration, they move randomlywithin the board, and the simulation stops when one of the frogs eats the fly.Fly and frogs are essentially creatures that can move, make noise, and eat. Frogs can move up to 2squares in any direction, and flies can move up to 1. Frogs make the "Croak! Croak!" sound, and fliesmake "ZzzZZz!". Since frogs should not eat their kind, a function of "isEatable" should also beimplemented in decision making. A variable or function to check if the fly is alive is also required as aterminate condition for simulation.In each iteration, an 'f' character represents frogs' position on board, and an '*' character is used torepresent the position of fly. Java language please I dont want the survival game starting with the code below I want in Java language and like in photos please #functions def GenerateRandomScene(): scenes =…arrow_forwardConsider writing a program to manage a collection of movies. There are three kinds of movies in the collection: dramas, comedies, and documentaries. The collector would like to keep track of each movie's title, the name of its director, and the year the movie was made. Some operations are to be implemented for all movies, and there will also be special operations for each of the three different kinds of movies. How would you design the class(es) to represent this system of movies? Your design should implement the concept of Overridingarrow_forwardCreate a TestCard project with a TestCard class and a Card class. Data members for the Card class should be two numeric values representing the suit of the Card and the card's number. The Card class also has a constructor and methods for setting and getting the card information. See UML model. In the TestCard class within main(), deal two cards at a time by constructing two card objects. One card is the user's. The other is the computer's. Show both cards. Add a point to whoever had the higher card. Show who won the trick and the score. Scores don't change if a tie. Keep dealing until user wants to quit or 26 pairs have been dealt. UML for Card class -suit: int the number that corresponds to the suit of the card. 0 Hearts, 1 Diamonds, 2 Clubs, 3 Spades -value: int the value of the card. Ace is 1, 2 is 2, ..., Jack is 11, Queen 12, King 13. +Card() Default constructor. Sets the suit and number to random values +getValue(): int Returns the value of the…arrow_forward
- For this assignment, you will be programming an airport simulator. The airport has one runway, and a plane can either be taking off or landing on it at any given unit of time. There will be a queue of planes waiting to take off and a priority queue of planes waiting to land. Your simulator will share some similarities to the movie theater simulator from the lecture notes (and the code is posted on Canvas). To make this project much simpler, I recommend studying that code and basing your code off of it. When the user starts the simulation, let them decide the % chance that a plane will show up to land and the % chance that a plane will show up to take off each clock tick. Let them also decide how many clock ticks to run the simulation for. Recall that the simulation should run inside a for loop. Each loop iteration represents one unit of time (or clock tick). In each clock tick, you need to: Randomly decide if a plane should join the take-off queue, based on the percentage provided by…arrow_forwardWrite a program in the Java language requires the management of university students, where student data (name, student number, and specialization) are saved, and then he can add and delete study materials for the current semester, and you can also add the grade for each subject (with the addition of the final code for the degree automatically).Note: The class principle is used to solve this assignment.arrow_forwardWrite a Rectangle class. A Rectangle has properties of width and length. You construct a Rectangle object by providing the width and length in that order. If no width and length are provided to the constructor, construct a Rectangle with width 0.0 and length 0.0. We want to be able to get and set both the width and the length independently. We also want to be able to ask for the area of the rectangle and the perimeter of the rectangle. What will the object need to remember? width and length - those are the instance variables. Rectangle class has these constructors : public Rectangle() - Constructs a new rectangle with width and length of 0.0. public Rectangle(double width, double length) - Constructs a new rectangle with the given width and length. Remember that the job of the constructor is to initialize the instance variables. It has these methods. public double getWidth() - Gets the width of this Rectangle public double getLength() - Gets the length of this Rectangle public void…arrow_forward
- You are to write an Ant class to simulate Langton's Ant. In this simulation, a virtual "ant" moves about a two-dimensional square matrix, whose spaces can be designated white or black, according to the rules below: If the ant is on a white space, it will turn right 90 degrees relative to the directions it is facing, move forward one step, and change the space it left to black. If the ant is on a black space, it will turn left 90 degrees relative to the directions it is facing, move forward one step, and change the space it left to white. When the ant hits the edge of the board and is going to go out of the bounds, wrap the board around so the ant will appear on the other side. The matrix is initially composed of all white spaces. The user will specify the size of the square matrix. The user will also specify the number of steps that the ant will move and the starting location and direction of the ant. After the simulation, the final board with the ant position will be displayed to…arrow_forwardYour assignment for this course is to implement a beginner level Book Management System (BMS) in Java language. BMS contains 2 classes: Bookand BookList. The Book class has the following attributes: code: a String object, that hold the book’s code. title: a String object, that hold the book’s title. qua: int variable, that hold the number of books with the same code in the library. price: a double variable, that hold the book’s price. The BookList class contains only one data member: ArrayList<Book> t. When running the program display the menu as below:1. Input & add book(s) to the end.2. Display all books.3. Search a book for given code.4. Update the book’s price for given code.5. Find the (first) max price value.6. Sort the list ascendingly by code.7. Remove the book having given code.8. Load data from file.0. Exit.Notes:(1) The book’s code must be unique in the list.(2) Display all books in format (code, title, quantity, price).(5)…arrow_forwardHelp, I am making a elevator simulation using polymorphism. I am not sure to do now. Any help would be appreciated. My code is at the bottom, that's all I could think off. There are 4 types of passengers in the system:Standard: This is the most common type of passenger and has a request percentage of 70%. Standard passengers have no special requirements.VIP: This type of passenger has a request percentage of 10%. VIP passengers are given priority and are more likely to be picked up by express elevators.Freight: This type of passenger has a request percentage of 15%. Freight passengers have large items that need to be transported and are more likely to be picked up by freight elevators.Glass: This type of passenger has a request percentage of 5%. Glass passengers have fragile items that need to be transported and are more likely to be picked up by glass elevators. public abstract class Passenger { public static int passangerCounter = 0; private String passengerID; protected…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
Java Math Library; Author: Alex Lee;https://www.youtube.com/watch?v=ufegX5o8uc4;License: Standard YouTube License, CC-BY