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
Videos
Textbook Question
Chapter 11, Problem 6PC
FileArray Class
Design a class that has a static method named writeArray. The method should take two arguments: the name of a file and a reference to an int array. The file should be opened as a binary file, the contents of the array should be written to the file, and then the file should be dosed.
Write a second method in the class named readArray. The method should take two arguments: the name of a file and a reference to an int array. The file should be opened, data should be read from the file and stored in the array, and then the file should be closed. Demonstrate both methods in a
Expert Solution & Answer
Learn your wayIncludes step-by-step video
schedule06:44
Students have asked these similar questions
The functionality of each file is described below:Class BankAccount This class has two instance variables:namebalanceCreate a constructor that takes two parameters to initialize the instance variables name and balance. The name must not be an empty string. The name also must not include any numbers or symbols. The balance must be zero or more to be used.If the name was an empty string a Value Error will be raised with the message “name cannot be empty”If the name contained numbers or symbols a Value Error will be raised with the message “name cannot include numbers or symbols”If the name was valid, it will be formatted properly and assigned to the instance variable. The valid name consists of alphabetical characters lowercase or upper case, may include space, underscore or hyphen.The name may consist of first, middle and last name.One way to validate the name is using Regular Expressions.Proper name format is the first character uppercase and the rest of the name lowercase character.…
Fleet class:
Instance Variables
An array that stores Aircraft that represents Delta Airlines entire fleet
A variable that represents the count for the number of aircraft in the fleet
Methods:
o Constructor-One constructor that instantiates the array and sets the count to aero
readFile()-This method accepts a string that represents the name of the file to be
read. It will then read the file. Once the data is read, it should create an aircraft and
then pass the vehicle to the addAircraft method. It should not allow any duplication
of records. Be sure to handle all exceptions.
o writeFile()-This method accepts a string that represents the name of the file to be
written to and then writes the contents of the array to a file. This method should
call a sort method to sort the amay before writing to it.
sortArray()-This method returns a sorted array. The array is sorted by registration
number.u
addAircraft- This method accepts an aircraft and adds it to the fleet(the array only
if it is not…
Computer Science
C# Programming
Object Orientation
Please use Arrays or ArrayLists where appropriate
Implement a menu driven program that has some operations for a food truck. A food truck has multiple food items as well as a menu which contains a selection of the food items which will be sold for that day. A maximum of 10 food items can appear on the menu for any day. For each food item keep a code, description, category, price and quantity in stock (code, description and category are not usually changed).
Create a comma delimited text file called "items.txt" for 15 or more food items, indicating the item's description, category, price and quantity in stock.
Read all the food items from the text file “Items.txt”
Display all the food items available for this food truck.
Continuously prompt the user for a food item’s code to be placed on the menu until the menu is full or the user enters -1. Note that only food items which have a positive quantity in stock may be added to…
Chapter 11 Solutions
Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
Ch. 11.1 - Prob. 11.1CPCh. 11.1 - Prob. 11.2CPCh. 11.1 - Prob. 11.3CPCh. 11.1 - Prob. 11.4CPCh. 11.1 - Prob. 11.5CPCh. 11.1 - Prob. 11.6CPCh. 11.1 - Prob. 11.7CPCh. 11.1 - Prob. 11.8CPCh. 11.1 - Prob. 11.9CPCh. 11.1 - When does the code in a finally block execute?
Ch. 11.1 - What is the call stack? What is a stack trace?Ch. 11.1 - Prob. 11.12CPCh. 11.1 - Prob. 11.13CPCh. 11.1 - Prob. 11.14CPCh. 11.2 - What does the throw statement do?Ch. 11.2 - Prob. 11.16CPCh. 11.2 - Prob. 11.17CPCh. 11.2 - Prob. 11.18CPCh. 11.2 - Prob. 11.19CPCh. 11.3 - What is the difference between a text file and a...Ch. 11.3 - What classes do you use to write output to a...Ch. 11.3 - Prob. 11.22CPCh. 11.3 - What class do you use to work with random access...Ch. 11.3 - What are the two modes that a random access file...Ch. 11.3 - Prob. 11.25CPCh. 11 - Prob. 1MCCh. 11 - Prob. 2MCCh. 11 - Prob. 3MCCh. 11 - Prob. 4MCCh. 11 - FileNotFoundException inherits from __________. a....Ch. 11 - Prob. 6MCCh. 11 - Prob. 7MCCh. 11 - Prob. 8MCCh. 11 - Prob. 9MCCh. 11 - Prob. 10MCCh. 11 - Prob. 11MCCh. 11 - Prob. 12MCCh. 11 - Prob. 13MCCh. 11 - Prob. 14MCCh. 11 - Prob. 15MCCh. 11 - This is the process of converting an object to a...Ch. 11 - Prob. 17TFCh. 11 - Prob. 18TFCh. 11 - Prob. 19TFCh. 11 - True or False: You cannot have more than one catch...Ch. 11 - Prob. 21TFCh. 11 - Prob. 22TFCh. 11 - Prob. 23TFCh. 11 - Prob. 24TFCh. 11 - Find the error in each of the following code...Ch. 11 - // Assume inputFile references a Scanner object,...Ch. 11 - Prob. 3FTECh. 11 - Prob. 1AWCh. 11 - Prob. 2AWCh. 11 - Prob. 3AWCh. 11 - Prob. 4AWCh. 11 - Prob. 5AWCh. 11 - Prob. 6AWCh. 11 - The method getValueFromFile is public and returns...Ch. 11 - Prob. 8AWCh. 11 - Write a statement that creates an object that can...Ch. 11 - Write a statement that opens the file...Ch. 11 - Assume that the reference variable r refers to a...Ch. 11 - Prob. 1SACh. 11 - Prob. 2SACh. 11 - Prob. 3SACh. 11 - Prob. 4SACh. 11 - Prob. 5SACh. 11 - Prob. 6SACh. 11 - What types of objects can be thrown?Ch. 11 - Prob. 8SACh. 11 - Prob. 9SACh. 11 - Prob. 10SACh. 11 - What is the difference between a text file and a...Ch. 11 - What is the difference between a sequential access...Ch. 11 - What happens when you serialize an object? What...Ch. 11 - TestScores Class Write a class named TestScores....Ch. 11 - Prob. 2PCCh. 11 - Prob. 3PCCh. 11 - Prob. 4PCCh. 11 - Prob. 5PCCh. 11 - FileArray Class Design a class that has a static...Ch. 11 - File Encryption Filter File encryption is the...Ch. 11 - File Decryption Filter Write a program that...Ch. 11 - TestScores Modification for Serialization Modify...Ch. 11 - Prob. 10PC
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
What is an infinite loop? Write the code for an infinite loop.
Starting Out with Python (4th Edition)
Define a class called List that can hold a list of values of type double. Model your class definition after the...
Problem Solving with C++ (9th Edition)
Write a complete Java program that produces a dialog window containing the message Helloworld!. Your program do...
Java: An Introduction to Problem Solving and Programming (8th Edition)
Give the definitions of the constructors for the class TitledEmployee that you gave as the answer to Self-Test ...
Problem Solving with C++ (10th Edition)
Describe the three types of anomalies that can arise in a table and the negative consequences of each.
Modern Database Management
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
- (Data processing) A bank’s customer records are to be stored in a file and read into a set of arrays so that a customer’s record can be accessed randomly by account number. Create the file by entering five customer records, with each record consisting of an integer account number (starting with account number 1000), a first name (maximum of 10 characters), a last name (maximum of 15 characters), and a double-precision number for the account balance. After the file is created, write a C++ program that requests a user-input account number and displays the corresponding name and account balance from the file.arrow_forward1. // MAINTENANCE10 // This program accepts data about 100 books and // determines a price for each. // The price is 10 cents per page for the // first 200 pages, then 8 cents // per page after that. // After pricing, all the data is displayed. // Create a Book class and modify the program to use // an array of Book objects instead of individual // data items. start Declarations num SIZE = 100 num sub string titles[SIZE] num pages[SIZE] num prices[SIZE] num MIN_PAGES = 200 num HIGH_PRICE = 0.10 num LOW_PRICE = 0.08 sub = 0 while sub < SIZE output "Enter title … " input title[sub] output "Enter pages … " input pages[sub] if pages[sub]arrow_forwardJAVA Programming Problem 5 – CharacterArray Write a program which will store the following string into a character array: 6901 Sudley Road Manassas VA Your program will display each original character, determine and display whether the character is a digit or a letter, and redisplay the character according to the directions below. Directions Create a class called CharacterArray. The scanner class is not required. Initialize the character array with the given string. Write a program which will accept an alpha numeric string at the keyboard. Store the string, of any length, into a character array, for example: RBDB Manassas Campus 6901 Sudley Road Manassas VA 20109 For each visible character: Display the original character Determine and display whether the character is a digit or a letter If the character is a lower case letter, redisplay the character in upper case If the character is a upper case letter, redisplay the character in lower case If the character is a digit, display it…arrow_forward
- java language coding please Object Relationship and File IO Write a program to perform statistical analysis of scores for a class of students. The class may have up to 40 students.There are five quizzes during the term. Each student is identified by a four-digit student ID number. The program is to print the student scores and calculate and print the statistics for each quiz. The output is in the same order as the input; no sorting is needed. The input is to be read from a text file. The output from the program should be similar to the following: Here is some sample data (not to be used) for calculations: Stud Q1 Q2 Q3 Q4 Q5 1234 78 83 87 91 86 2134 67 77 84 82 79 1852 77 89 93 87 71 High Score 78 89 93 91 86 Low Score 67 77 84 82 71 Average 73.4 83.0 88.2 86.6 78.6 The program should print the lowest and highest scores for each quiz. Plan of Attack Learning Objectives You will apply the following topics in this assignment: File Input operations. Working and…arrow_forwardTrue/ False 1- Class objects can be defined prior to the class declaration. 2- You must use the private access specification for all data members of a class. 3- If an array is partially initialized, the uninitialized elements will be set to zero. 4- A vector object automatically expands in size to accommodate the items stored in it. 5- With pointer variables, you can access but not modify data in other variables. 6- Assuming myValues is an array of int values and index is an int variable, both of the following statements do the same thing. 1. cout header file. 15- To solve a problem recursively, you must identify at least one case in which the problem can be solved without recursion.arrow_forwardCODE IN JAVA Write a class name FileDisplay with the following methods: Constructor: takes the name of a file as an argument displayHead: displays only the first five lines of the file’s contents. If the file contains less than 5 lines, it should display the file’s entire contents. displayContents: displays the entire contents of the file, the name of which was passed to the constructor.writeNew: displays the contents of a file, the name of which was passed to the constructor. Each line should be preceded with a line number followed by a colon. The line numbering should start at 1. As each line is displayed it should also be written to a new file, the name of which is passed in as a parameter. I have provided a test file called “testfile.txt”. I have also provided a driver for the application called “filedisplaytest.java”. This file is complete and should not be altered. FILEDISPLAYTEST.JAVA (do not change this) import java.io.*; public class FileDisplayTest {…arrow_forward
- 11:02 all 10% + Create 1 1000.01 Create 2 2000.02 Create 3 3000.03 Deposit 111.11 Deposit 2 22.22 Withdraw 4 5000.00 Create 4 4000.04 Withdraw 1 0.10 Balance 2 Withdraw 2 0.20 Deposit 3 33.33 Withdraw 4 0.40 Bad Command 65 Balance 1 Balance 2 Balance 3 Balance 4arrow_forwardEmployee Management System Write a python class named Employee that holds the following data about an employee in attributes: name, ID number, department, and job title. Once you have written the class, write a PYTHON program that creates three Employee objects to hold the following data: Name ID Number Department Job Title Susan Meyers 47899 Accounting Vice President Mark Jones 39119 IT Programmer Joy Rogers 81774 Manufacturing Engineer The program should store this data in the three objects, then display the data for each employee on the screen.Using the Employee class, create a program that stores Employee objects in a dictionary. Use the employee ID number as the key. The program should present a menu that lets the user perform the following actions: • Look up an employee in the dictionary• Add a new employee to the dictionary• Change an existing employee’s name, department, and job title in the dictionary• Delete an employee from the dictionary• Print all…arrow_forwardCreate an Organization class. Organization has 10 Employees (Hint: You will need an array of pointers to Employee class) Organization can calculate the total amount to be paid to all employees Organization can print the details(name & salary) of all employees note: write code in main,header and function.cpp filearrow_forward
- C++HurdleGame The HurdleGame class contains all the functions invoked as a result of a user action (i.e. when a user presses a key on the Hurdle Frontend, one of the functions in HurdleGame will be called. A HurdleGame object comprises a HurdleWords object (which stores all valid guesses and valid Hurdles), and a HurdleState object, which stores and tracks all the game states. Any action should update the HurdleState object.Each function in HurdleGame is called as a result of a user action on the Hurdle Frontend. To understand this, please read the Hurdle Backend API section below before implementing. You are responsible for implementing each of the functions below. LetterEntered ● Called by the Hurdle frontend when the user enters a letter. ● Hint: when a user enters a letter, how should the underlying HurdleState be modified to reflect the change resulting from that key press? WordSubmitted ● Called by the Hurdle front end when the user submits a guess by pressing enter. ● Hint: when…arrow_forwardTrue or False Objects that are instances of a class can be stored in an array.arrow_forwardRectangle's Length and Width Code in C language // WARNING: Do not add, remove, or change anything before the line 19 of this file.// Doing so will nullify your score for the activity. #include <stdio.h>#include "rectangle.h" int get_length(Rectangle *rect);int get_width(Rectangle *rect); int main() { int ur_x, ur_y, ll_x, ll_y; printf("UR's X: "); scanf("%d", &ur_x); printf("UR's Y: "); scanf("%d", &ur_y); printf("LL's X: "); scanf("%d", &ll_x); printf("LL's Y: "); scanf("%d", &ll_y); // TODO: Initialize the points here // Point ... // TODO: Initialize the rectangle here // Rectangle ... // TODO: Call the get_length here int len = ___; printf("\nLength: %d", len); // TODO: Call the get_width here int wid = ___; printf("\nWidth: %d", wid); return 0;} // TODO implement get_lengthint get_length(Rectangle *rect) { return 0;} // TODO implement get_widthint get_width(Rectangle *rect){ return 0;} refer to pics for instructionsarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Programming Logic & Design ComprehensiveComputer ScienceISBN:9781337669405Author:FARRELLPublisher:Cengage
C++ for Engineers and ScientistsComputer ScienceISBN:9781133187844Author:Bronson, Gary J.Publisher:Course Technology Ptr
Microsoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,
EBK JAVA PROGRAMMINGComputer ScienceISBN:9781305480537Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT
EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT
Programming Logic & Design Comprehensive
Computer Science
ISBN:9781337669405
Author:FARRELL
Publisher:Cengage
C++ for Engineers and Scientists
Computer Science
ISBN:9781133187844
Author:Bronson, Gary J.
Publisher:Course Technology Ptr
Microsoft Visual C#
Computer Science
ISBN:9781337102100
Author:Joyce, Farrell.
Publisher:Cengage Learning,
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781305480537
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
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