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
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- java languageCreate a new main fileCreate an array of size 3. The array must be of class mammal.Create an object of each class.(feline, domestic)Assign values to each of the created objects.Assign each of the objects to each of the positions in the array.Using a loop, it displays each of the positions in the array.arrow_forwardFirst programming homework Create a class of records for a gradebook called Rec. The data should be private, and should include a firstname, lastname, array of three grades, and a field for average grade. Build two constructors: a default constructor and a constructor that takes the first and last name. Build a function to read the data, either from a file or from cin. The read function reads the two names and three grades, but does not read the average grade. Build a write function that writes the data either to a file or to cout. The write function prints all of the data on one line with spaces between fields. Build a function to calculate the average grade field. Build an overloaded operator == to compare two records. This should be implemented as a friend function. Declare the constructors and functions in the body of the class, but implement them outside the class. I will provide you with a driver called hw1.cpp in ~cthorpe/public/142 and with a test file HW1.txt in the same…arrow_forward(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_forward
- CASE STUDY#:Grade Register Write a grade register program to keep and process the grades of students. The program contain a class called GradeRegister. This class has two data members known as CourseName and an array of integer called Grades. The array Grades keep the grades of students of the same course. GradeRegister class have three methods as GetHighestGrade(), GetLowestGrade() and GetAverageGrade().The method GetHighestGrade return the maximum grade as integer from the array Grades and GetLowestGrade return the minimum grade value as integer from the array Grades. The GetAverageGrade method will return the average of grades from Grades array as float value. The parameterized constructor inside GradeRegister class will take two parameters to initialize the two data members of same class as mentioned before. Write a driver class GradeRegisterDriver to declare and initialize an integer array for grades and pass through the GradeRegister class constructor along with the course name.…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
- createDatabaseOfProfiles(String filename) This method creates and populates the database array with the profiles from the input file (profile.txt) filename parameter. Each profile includes a persons' name and two DNA sequences. 1. Reads the number of profiles from the input file AND create the database array to hold that number profiles. 2. Reads the profiles from the input file. 3. For each person in the file 1. creates a Profile object with the information from file (see input file format below). 2. insert the newly created profile into the next position in the database array (instance variable).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_forwardAddy basics Javaarrow_forward
- CODE 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_forwardPseudocode for the student grade calculator program, please Create a program to enter grades and calculate averages and letter grades. Need a class which will contain: Student Name Student Id Student Grades (an array of 3 grades) A constructor that clears the student data (use -1 for unset grades) Get functions for items a, b, and c, average, and letter grade Set functions for items a, n, and c Note that the get and set functions for Student grades need an argument for the grade index. Need another class which will contain: An Array of Students (1 above) A count of number of students in use You need to create a menu interface that allows you to: Add new students Enter test grades Display all the students with their names, ids, test grades, average, and letter grade Exit the program Add comments and use proper indentation. Nice Features: I would like that system to accept a student with no grades, then later add one or more grades, and when all grades are entered, calculate the…arrow_forward11:02 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_forward
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