Create a Java program for managing a book store's inventory system. The inventory information is stored in a text file named "book_inventory.txt." Each line in the file represents a book with the following format: "BookID, Title, Quantity, Price." The program should allow the user to add new books, update the quantity of existing books, and display the total value of the inventory. Ensure that the program checks for the existence of "book_inventory.txt" and handles cases where the file is empty. Utilize functions to organize your code effectively, with comments explaining each function's purpose. You can use data structures like HashMap or ArrayList to store and manipulate inventory data. The program should output the updated inventory information to a file named "updated_book_inventory.txt." Ex: book_inventory.txt: 201, Java Programming, 20, 45.99 202, Algorithms Unlocked, 15, 30.50 203, Data Structures and Algorithms, 25, 55.99 (updated_book_inventory.txt after adding 10 Python Basics books and updating Java Programming quantity to 25) 201, Java Programming, 25, 45.99 202, Algorithms Unlocked, 15, 30.50 203, Data Structures and Algorithms, 25, 55.99 204, Python Basics, 10, 39.99.

This project involves generating a boarding pass ticket and storing it in a file. The application should take the passenger details as input. The details of the boarding pass are to be stored in a file. The details should include valid data such as: name, email, phone number, gender, age, boarding pass number, date, origin, destination, estimated time of arrival (ETA), departure time. The application should generate a boarding pass ticket using the boarding pass details. The generated ticket should contain the following information: Boarding Pass Number, Date, Origin, Destination, Estimated time of arrival (ETA), Departure Time Name, Email, Phone Number, Gender, Age Total Ticket Price The user will be required to enter their Name, Email, Phone Number, Gender, Age, Date, Destination, and Departure Time into the console or GUI. From the input the computer must generate the ETA and Ticket Price. The computer must generate the boarding pass number ensuring the number is unique. All…

Design an application for the ABC Company that will process inventory from a file called ABC_Inventory.txt (attached to this assignment). The file contains Item ID, Description and list price stored on a separate line in the file. The program should display the contents of each record and then calculate and display the average list price. it is important that this is done in Thonny for python w

// Declare data fields: a String named customerName, // an int named numItems, and // a double named totalCost.// Your code here... // Implement the default contructor.// Set the value of customerName to "no name"// and use zero for the other data fields.// Your code here... // Implement the overloaded constructor that// passes new values to all data fields.// Your code here... // Implement method getTotalCost to return the totalCost.// Your code here... // Implement method buyItem.//// Adds itemCost to the total cost and increments// (adds 1 to) the number of items in the cart.//// Parameter: a double itemCost indicating the cost of the item.public void buyItem(double itemCost){// Your code here... }// Implement method applyCoupon.//// Apply a coupon to the total cost of the cart.// - Normal coupon: the unit discount is subtracted ONCE// from the total cost.// - Bonus coupon: the unit discount is subtracted TWICE// from the total cost.// - HOWEVER, a bonus coupon only applies if the…

it says Exercise09_13.java:5: error: class Location is public, should be declared in a file named Location.javapublic class Location {

1. Design a java application that outputs a table with a list of at least 6bstudents together with their first name, last name, score and grade in the following format. First name       last name   score  grade    2  Write a program by entering two integer numbers of your choice and make sure your program works properly. When you are readyvto submit your project enter 24 and 53 as set values and generate 100 random numbers to makecsure all of these numbers are generated within the range of [24.....43] inclusive. Please I need help to write the programs.   Thanks

Create a list of 5 words, phrases and company names commonly found in phishing messages. Assign a point value to each based on your estimate of its likelihood to be in a phishing message (e.g., one point if it's something likely, two points if modereratly, or three points if highly likely). Write an application that scans a file of text for these terms and phrases.  For each occurance of a keyword or phrase within the text file, add the assigned point value to the total points for the number of occurences and the point total.  Show the point total for the entire message. (Write the program in Java)

Among other things, the purpose of this assignment is to assess the student's ability to write a program dealing with sorting, arrays, and collections. seed = 3 Input: Ann Chris chris don don chris chris Bill Intermediate Results: Ann Bill Chris don Final Results: PROGRAM SPECIFICATIONS don Chris Bill Ann seed = 4 Beginning with the file that you downloaded named Proj04.java, create a new file named Proj04Runner.java to meet the specifications given below. Input: ann Ann Ann Don Don don Chris Chris Intermediate Results: ann Chris Don Note that the code in the file named Proj04.java. Final Results: ann Don Chris seed = 5 Input: Ann ann Ann Bill don bill Chris Ann Intermediate Results: Ann Bill Chris don Be sure to display your name in the output as indicated. When you place both files in the same folder, compile them both, and run the file named Proj04.java with a command-line argument of 6, the program must display the text shown below on the command line screen. Final Results: don…

Write a java code that does the following: Opens a file named NumberList.txt, uses a loop to write the numbers 1 through 100 to the file, and then closes the file. Opens the NumberList.txt file and reads all of the numbers from the file and displays them, and then closes the file. Opens the NumberList.txt file and reads all of the numbers from the file, calculate the sum of these numbers and displays their total. Opens a file named NumberList.txt for writing, but does not erase the contents of the file if it already exists.

Microsoft Visual C# 7th edition.  In Chapter 7, you modified the GreenvilleRevenue program to include a number of methods. Now, using your code from Chapter 7 Case Study 1, modify your program so every data entry statement uses a TryParse() method to ensure that each piece of data is the correct type. Any invalid user entries should generate an appropriate message that contains the word Invalid, and the user should be required to reenter the data. Cengage requirement for the shaded part is attached and I don't understand it. I need help with the highlighted part (getContestantData() method) please. Thanks using System;  using static System.Console; using System.Globalization; class GreenvilleRevenue {    static void Main()  {   int numLastYear;      int numThisYear;      double revenue;      int fee = 25;      const int MAX_CONTESTANTS = 30;      string[] names = new string[MAX_CONTESTANTS];      char[] talents = new char[MAX_CONTESTANTS];      char[] talentCodes = { 'S', 'D', 'M', 'O'…