Starting Out with Java: Early Objects (6th Edition)
6th Edition
ISBN: 9780134462011
Author: Tony Gaddis
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 5, Problem 14PC
FileDisplay Class
Write a class named FileDisplay with the following methods:
- Constructor. The class’s constructor should take the name of a file as an argument.
- displayHead. This method should display only the first five lines of the file’s contents. If the file contains less than five lines, it should display the file’s entire contents.
- displayContents. This method should display the entire contents of the file, the name of which was passed to the constructor.
- displayWithLineNumbers. This method should display the contents of the 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.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
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
Help with C# programming in Microsoft Visual Studio:
You will be creating a program that uses a GUI to allow the user to enter information about an employee. In addition to the main class you create, there will also be four additional classes named fileOutput, baseEmployee, superEmployee and advancedEmployee which you will have to create. For this problem, the baseEmployee class will need to accept user input for a name, email and address for a base employee. The advancedEmployee class should be able to extend the baseEmployee, by allowing an hourly rate and hours worked to be entered. Hours worked must be in the range of 0 to 80 and hourly rate is in the range of 10 to 42.50. The superEmployee class will then extend the advancedEmployee class and allow permission level of high, medium or low to be entered, along with their office number. The program should show a radio button that allows the user to choose whether or not the user is a base employee, advanced…
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.
Test File:
This is line one.This is line two.This is line three.This is line four.This is line five.This is line…
Chapter 5 Solutions
Starting Out with Java: Early Objects (6th Edition)
Ch. 5.1 - What will the following program segments display?...Ch. 5.2 - How many times will Hello World be printed in the...Ch. 5.2 - How many times will I love Java programming! be...Ch. 5.3 - Write an input validation loop that asks the user...Ch. 5.3 - Write an input validation loop that asks the user...Ch. 5.3 - Write an input validation loop that asks the user...Ch. 5.5 - Name the three expressions that appear inside the...Ch. 5.5 - You want to write a for loop that displays I love...Ch. 5.5 - What will the following program segments display?...Ch. 5.5 - Write a for loop that displays your name 10 times.
Ch. 5.5 - Write a for loop that displays all of the odd...Ch. 5.5 - Write a for loop that displays every fifth number,...Ch. 5.6 - Write a for loop that repeats seven times, asking...Ch. 5.6 - In the following program segment, which variable...Ch. 5.6 - Prob. 5.15CPCh. 5.10 - What is the difference between an input file and...Ch. 5.10 - What import statement will you need in a program...Ch. 5.10 - What class do you use to write data to a file?Ch. 5.10 - Write code that does the following: opens a file...Ch. 5.10 - What classes do you use to read data from a file?Ch. 5.10 - Write code that does the following: opens a file...Ch. 5.10 - You are opening an existing file for output. How...Ch. 5.10 - What clause must you write in the header of a...Ch. 5 - Prob. 1MCCh. 5 - Prob. 2MCCh. 5 - Prob. 3MCCh. 5 - What is each repetition of a loop known as? a....Ch. 5 - This is a variable that controls the number of...Ch. 5 - The while loop is this type of loop. a. pretest b....Ch. 5 - The do-while loop is this type of loop. a. pretest...Ch. 5 - The for loop is this type of loop. a. pretest b....Ch. 5 - This type of loop has no way of ending and repeats...Ch. 5 - This type of loop always executes at least once....Ch. 5 - This expression is executed by the for loop only...Ch. 5 - Prob. 12MCCh. 5 - This is a special value that signals when there...Ch. 5 - To open a file for writing, you use the following...Ch. 5 - To open a file for reading, you use the following...Ch. 5 - Prob. 16MCCh. 5 - This class allows you to use the print and println...Ch. 5 - This class allows you to read a line from a file....Ch. 5 - True or False: The while loop is a pretest loop.Ch. 5 - True or False: The do-while loop is a pretest...Ch. 5 - True or False: The for loop is a posttest loop.Ch. 5 - True or False: It is not necessary to initialize...Ch. 5 - True or False: One limitation of the for loop is...Ch. 5 - True or False: A variable may be defined in the...Ch. 5 - True or False: In a nested loop, the inner loop...Ch. 5 - True or False: To calculate the total number of...Ch. 5 - // This code contains ERRORS! // It adds two...Ch. 5 - Prob. 2FTECh. 5 - // This code contains ERRORS! int choice, num1,...Ch. 5 - Prob. 4FTECh. 5 - Write a while loop that lets the user enter a...Ch. 5 - Write a do-whi1e loop that asks the user to enter...Ch. 5 - Write a for loop that displays the following set...Ch. 5 - Write a loop that asks the user to enter a number....Ch. 5 - Write a for loop that calculates the total of the...Ch. 5 - Write a nested loop that displays 10 rows of #...Ch. 5 - Write nested loops to draw this pattern:Ch. 5 - Write nested loops to draw this pattern: ## # # #...Ch. 5 - Complete the following program so it displays a...Ch. 5 - Convert the while loop in the following code to a...Ch. 5 - Convert the do-while loop in the following code to...Ch. 5 - Convert the following while loop to a for loop:...Ch. 5 - Convert the following for loop to a while loop:...Ch. 5 - Write an input validation loop that asks the user...Ch. 5 - Write an input validation loop that asks the user...Ch. 5 - Prob. 16AWCh. 5 - Prob. 17AWCh. 5 - Modify the code you wrote in Question 14 so it...Ch. 5 - Write code that opens a file named NumberList.txt...Ch. 5 - Prob. 1SACh. 5 - Why should you indent the statements in the body...Ch. 5 - Describe the difference between pretest loops and...Ch. 5 - Why are the statements in the body of a loop...Ch. 5 - Describe the difference between the while loop and...Ch. 5 - Which loop should you use in situations where you...Ch. 5 - Which loop should you use in situations where you...Ch. 5 - Which loop should you use when you know the number...Ch. 5 - Why is it critical that accumulator variables are...Ch. 5 - What is an infinite loop? Write the code for an...Ch. 5 - Describe a programming problem that would require...Ch. 5 - What does it mean to let the user control a loop?Ch. 5 - What is the advantage of using a sentinel?Ch. 5 - Prob. 14SACh. 5 - Describe a programming problem requiring the use...Ch. 5 - How does a file buffer increase a programs...Ch. 5 - Why should a program close a file when its...Ch. 5 - What is a files read position? Where is the read...Ch. 5 - When writing data to a file, what is the...Ch. 5 - What does the Scanner classs hasNext method return...Ch. 5 - What is a potential error that can occur when a...Ch. 5 - Prob. 22SACh. 5 - How do you open a file so that new data will be...Ch. 5 - Sum of Numbers Write a program that asks the user...Ch. 5 - Distance Traveled The distance a vehicle travels...Ch. 5 - Distance File Modify the program you wrote for...Ch. 5 - Pennies for Pay Write a program that calculates...Ch. 5 - Hotel Occupancy A hotels occupancy rate is...Ch. 5 - Population Write a program that will predict the...Ch. 5 - Average Rainfall Write a program that uses nested...Ch. 5 - The Greatest and Least of These Write a program...Ch. 5 - Payroll Report Design a Payroll class that stores...Ch. 5 - SavingsAccount Class Design a SavingsAccount class...Ch. 5 - Deposit and Withdrawal Files Use Notepad or...Ch. 5 - Bar Chart Write a program that asks the user to...Ch. 5 - Celsius to Fahrenheit Table Write a program that...Ch. 5 - FileDisplay Class Write a class named FileDisplay...Ch. 5 - UpperCaseFile Class Write a class named...Ch. 5 - Budget Analysis Write a program that asks the user...Ch. 5 - Random Number Guessing Game Write a program that...Ch. 5 - Random Number Guessing Game Enhancement Enhance...Ch. 5 - Square Display Write a program that asks the user...Ch. 5 - Coin-Toss Simulator Write a class named Coin. The...Ch. 5 - Tossing Coins for a Dollar For this assignment,...Ch. 5 - Dice Game Write a program that uses the Die class...Ch. 5 - Fishing Game Simulation Write a program that uses...Ch. 5 - A Game of 21 Write a program that uses the Die...Ch. 5 - ESP Game Write a program that tests your ESP...Ch. 5 - Prob. 26PCCh. 5 - Personal Web Page Generator Write a program that...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Show a snippet of PHP code for creating a recordset. Explain the meaning of the code.
Database Concepts (8th Edition)
Practice Problem 8.5 (solution page 797) Write a wrapper function for sleep, called snooze, with the following ...
Computer Systems: A Programmer's Perspective (3rd Edition)
Suppose a computer manufacturer develops a new machine architecture. To what extent should the company be allow...
Computer Science: An Overview (13th Edition) (What's New in Computer Science)
Given that y=ax3+7, which of the following are correct Java statements for this equations? int y = a (x x x)...
Java How to Program, Early Objects (11th Edition) (Deitel: How to Program)
The ________ object is assumed to exist and it is not necessary to include it as an object when referring to it...
Web Development and Design Foundations with HTML5 (9th Edition) (What's New in Computer Science)
Write a loop equivalent to the for loop above without using .
C Programming Language
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
- 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.…arrow_forwardA student record has the following:Student nameStudent surnameStudent NumberFinal markFGrade comment Create a StudentRecord class, complete with accessors and mutators (get and set methods) for theinstant variables as well as the toString method for formatting the object.The StudentRecord class must have an abstract method called calculatefinalMarkAn IT student has Test1, Test2 and Test3. The IT student's final mark is calculated as (Test1*0.2 +Test2*0.3 + Test3*0.5). The subminimum for a pass is 40% on Test3. ITStudentRecordAn Accounting student has Test1 and Test2. The Accounting student's final mark is calculated as(Tes1*0.4 + Test2*0.6). The subminimum for a pass is 40% on Test2. AccountingStudentRecordBoth the sub classes must have at least two constructors, one with null argument and one with allpertinent instance variables.PS. The final mark and the grade comment cannot be instance variables.The grade comment can be a pass with distinction if the final mark is 80% or greater.…arrow_forwardThe operator used to create objects is = += new createarrow_forward
- C++ Visual Studio 2019 Employee Class - Please submit just one file for the class and main to test the class. Just create the class before main and submit only one cpp file. Do not create separate header files.arrow_forwardfile operator code 1 // The FileOperator class that includes methods for file input and output 2 // Your name 3 import java.io.*; 4 public class FileOperator 5 { 6 // instance variables 7 private File m_file; 8 9 // constructor 10 // Do not make any changes to this method! 11 public FileOperator() 12 { 13 String fileName = "employeeData.txt"; 14 m_file = new File(fileName); 15 } 16 17 // This method writes an array of Employees into a physical file. 18 // Each line is in this format: "S-Optimus Prime-Computer Science-$1200" 19 // "S" represents StudentWorker ("F" represents Faculty) 20 public void writeFile(Employee[] employees) 21 { 22 // TODO: implement this method 23 } 24 }arrow_forwardOutput to a file can be achieved with a _____ object, which is constructed with a File and has the same methods as System.out (the class name is case sensitive)(Just Words)arrow_forward
- Java Program Fleet class- reading from a file called deltafleet.txt-Using file and Scanner Will be creating a file called newfleet.txt Instance Variables:o An array that stores Aircraft that represents Delta Airlines entire fleeto 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 zeroo readFile()- This method accepts a string that represents the name of the file to beread. It will then read the file. Once the data is read, it should create an aircraft andthen pass the vehicle to the addAircraft method. It should not allow any duplicationof records. Be sure to handle all exceptions.o writeFile()- This method accepts a string that represents the name of the file to bewritten to and then writes the contents of the array to a file. This method shouldcall a sort method to sort the array before writing to it.o sortArray()- This method returns a sorted array. The array is…arrow_forwardfile operator code 1 // The FileOperator class that includes methods for file input and output 2 // Maham Hameed 3 import java.io.*; 4 public class FileOperator 5 { 6 // instance variables 7 private File m_file; 8 9 // constructor 10 // Do not make any changes to this method! 11 public FileOperator() 12 { 13 String fileName = "employeeData.txt"; 14 m_file = new File(fileName); 15 } 16 17 // This method writes an array of Employees into a physical file. 18 // Each line is in this format: "S-Optimus Prime-Computer Science-$1200" 19 // "S" represents StudentWorker ("F" represents Faculty) 20 public void writeFile(Employee[] employees) 21 { 22 // TODO: implement this method 23 } 24 }arrow_forwardComputer Science c sharp a program that will let you creat new cars, list all previous cars, update the other cars, and delete them. also be able to read from a text file and add to the text file. each car will have the following information VIN,model, make, color , and year. and store the information in a car object.arrow_forward
- Tasks / Skills • Creating a class in C++. Steps • Create a rectangle class that has the following data o Length as a double o Width as a double Create the following methods A constructor that will initialize the data in the class The ability to set the width The ability to set the length Return the current value of the length Return the current value of the width o Return the perimeter Return the area Prints the area Create a assignment5.cpp file that contain the main() function, declares a rectangle object(s) and uses each of the methods.arrow_forwardC++HurdleWords The HurdleWords class is mostly provided to you. HurdleWords is constructed from two files in the data/ folder: ● valid_guesses.txt (all 5 letter guesses considered to be valid words to guess), and ● valid_hurdles.txt (all words that may be selected to be the secret Hurdle.) ● Note: you may edit both text files if you’d like to add custom words to your game. HurdleWords stores all potential valid Hurdles from valid_hurdles.txt into a vector of strings (valid_hurdles_), and all valid guesses from valid_guesses.txt into an unordered set of strings (valid_guesses_). A set is simply a data structure that contains no duplicates and allows for a speedy lookup to check if a given element exists within the set. Because there are over 10,000 valid guesses, we store them in an unordered set to leverage their speediness, as you will need to check if a user-submitted guess is considered valid (i.e. their guess is considered a valid guess in the dictionary). You are responsible for…arrow_forwardIN C++ VISUAL STUDIO Create two classes one to read data from file, and the other to write data into a file. The data can be about employees having information about employee name, id and designation. You must create a class for employee. There is a total of 3 classes in your program. In the second class, which is about file writing, you have to write data about 10 employees in file. You can get data from user. In reading class, you have to read information about a specific employee whose id is given by user. Finally write a function to show data about employees whose designation is “manager”.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENTProgramming Logic & Design ComprehensiveComputer ScienceISBN:9781337669405Author:FARRELLPublisher:CengageMicrosoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
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,
Graphical User Interfaces: Crash Course Computer Science #26; Author: CrashCourse;https://www.youtube.com/watch?v=XIGSJshYb90;License: Standard YouTube License, CC-BY
Python GUI | How To Make A GUI In Python | Best GUI Framework In Python | Edureka; Author: edureka!;https://www.youtube.com/watch?v=_PHJvjQJa3w;License: Standard Youtube License