file 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ドル" 19 // "S" represents StudentWorker ("F" represents Faculty) 20 public void writeFile(Employee[] employees) 21 { 22 // TODO: implement this method 23 } 24 }

The program will consist of two files Program.cs - the main application file; name the class appropriately Unique.cs - class for retrieving the unique values from the user The Unique class provides the following: Constructor Private member variable to store 5 unique values (hint: use an Array or a List) Public function to get 5 unique values from the user and store them in the member variable loop to get the numbers, if a number is already stored, ignore it and keep looping until you have 5 unique numbers if a number is out of range, don't store the value, throw an exception and handle it in such a way that you don't break the loop but do message the user that the value was out of range Public functions to return the following based on the stored values: Largest number Smallest number Sum of all numbers Average of the numbers entered Last number entered divided by the first number entered The main application does the following Creates an instance of the Unique class Calls...

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...

1.Problem Description Student information management system is used to input, display student information records. 1. The GUI interface for inputing ia designed as follows: The top part are the student imformation used to input student information, and the bottom part are four buttonns, 2. each button meaning: 3. (2) Total: add java score and C++ score, and display the result; 4. (3) Save: save student record into file named student.dat; 5. (4) Clear: set all fields on GUI to empty string: 6. (5) Close: close the window of GUI Student ID: Java Score: Note: Total Student ID: BC501 Java Score: 80 Note: He study java hard. Total Student Management System Student name: C++ Score: Save C++ Score: 90.5 Student Management System Student name: ALVIN CARM Save Total scores: Clear Sex Clear D E Male Female Close Sex Male Female Total scores: 170.5 Close

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).

// 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 {

file 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ドル" 19 // "S" represents StudentWorker ("F" represents Faculty) 20 public void writeFile(Employee[] employees) 21 { 22 // TODO: implement this method 23 } 24 }

// FILE: IntSet.h - header file for IntSet class// CLASS PROVIDED: IntSet (a container class for a set of// int values)//// CONSTANT// static const int MAX_SIZE = ____// IntSet::MAX_SIZE is the highest # of elements an IntSet// can accommodate.//// CONSTRUCTOR// IntSet()// Pre: (none)// Post: The invoking IntSet is initialized to an empty// IntSet (i.e., one containing no relevant elements).//// CONSTANT MEMBER FUNCTIONS (ACCESSORS)// int size() const// Pre: (none)// Post: Number of elements in the invoking IntSet is returned.// bool isEmpty() const// Pre: (none)// Post: True is returned if the invoking IntSet has no relevant// relevant elements, otherwise false is returned.// bool contains(int anInt) const// Pre: (none)// Post: true is returned if the invoking IntSet has anInt as an// element, otherwise false is returned.// bool isSubsetOf(const IntSet& otherIntSet) const//...

True or False: Object privileges allow you to add and drop users

What form of object should be created if you want to read data from a text file?

Pls help ASAP

Java Programing Joyce Farrell 13-8 Create an application named StudentsStanding.java that allows you to enter student data that consists of an ID number, first name, last name, and grade point average. Have the program accept input until ZZZ is entered for the ID number. Depending on whether the student’s grade point average is at least 2.0, output each record either to a file of students in good standing (StudentsGoodStanding.txt) or those on academic probation (StudentsAcademicProbation.txt). Create an application named StudentsStanding2.java that displays each record in the two files created in the StudentsStanding application. Display a heading to introduce the list produced from each file. For each record, display the ID number, first name, last name, grade point average, and the amount by which the grade point average exceeds or falls short of the 2.0 cutoff. For example, the output should be formatted as follows (note that the student info may vary): Probationary Standing...