The fleet class includes a constructor that creates an array to store the entire fleet of Delta airlines. It also had method to read and write files, sort the array by registration number, add and remove aircraft, display the fleet and maintenance lists, update aircraft miles and maintenance , and display information about specific aircraft. Could you please explain it in Java?

Python:Please read the following. The Game class The Game class brings together an instance of the GameBoard class, a list of Player objects who are playing the game, and an integer variable “n” indicating how many tokens must be aligned to win (as in the name “Connect N”). The game class has a constructor and two additional methods. The most complicated of these, play, is provided for you and should not be modified. However, you must implement the constructor and the add_player method. __init__(self,n,height,width) The Game constructor needs to initialize three instance variables. The first, self.n, simply holds the integer value “n” provided as a parameter. The second, self.board, should be a new instance of the GameBoard class (described below), built using the provided height and width as dimensions. The third, self.players, should be an initially empty list. add_player(self,name,symbol) The add_player method is provided a name string and a symbol string. These two values should be…

Complete the Course class by implementing the courseSize() method, which returns the total number of students in the course. Given classes: Class LabProgram contains the main method for testing the program. Class Course represents a course, which contains an ArrayList of Student objects as a course roster. (Type your code in here.) Class Student represents a classroom student, which has three fields: first name, last name, and GPA. Ex. For the following students: Henry Bendel 3.6 Johnny Min 2.9 the output is: Course size: 2 public class LabProgram {    public static void main (String [] args) {       Course course = new Course();            // Example students for testing      course.addStudent(new Student("Henry", "Bendel", 3.6));         course.addStudent(new Student("Johnny", "Min", 2.9));              System.out.println("Course size: " + course.courseSize());    } }   public class Student {     private String first;  // first name    private String last;   // last name    private…

Write a program in Java that handles the order list for an online retailer. Your program should contain a minimum of three classes: Order Class Display Class Main Class Create a Order Class that uses a queue to hold the orders in the order they were taken. The queue should contain the customer last name, order number, and order total cost. Create a Display Class that will store a copy of the order queue in two arrays. Each array will contain the order list but one will be sorted by name and the other sorted by order number. When a order is taken and stored in the Order Class the program will update theDisplay Class arrays automatically sort them in descending order using quick sort and outputs the the contents to the console upon each entry of new data. Create a Main Class that will handle operator data input and when an order is added or removed, the program will update the Order Class and Display Class. The user will be presented a menu to add a order, remove a order and display…

Create a Point classCreate a Point class as we did in the class. We'll use this to create Point objects that hold x,y coordinates of locations where we'll want to draw. Draw DotsWrite a drawDots(points) function that takes a list points as input and draws a dot on the drawing window for each Point. For example, you should be able to call your function as follows: >>> p = Point(10, 20) >>> q = Point(20, 30) >>> points = [p, q] >>> drawDots(points)

Elevator simulation. I need help fixing this class The Simulation Class initializes and holds objects for Passengers, Elevators, and Floors. It reads and parses input files to create the necessary objects and sets the number of simulation iterations. The class also has methods to move the elevators up and down the building, as well as to pick up and drop off passengers. public class Simulation {    private int numFloors;    private ArrayList<Passenger> passengers;    private ArrayList<Elevator> elevators;    private ArrayList<Floor> floors;    private int numIterations;     public Simulation(String inputFile) throws FileNotFoundException {        passengers = new ArrayList<>();        elevators = new ArrayList<>();        floors = new ArrayList<>();         // Read input file and initialize simulation parameters        Scanner scanner = new Scanner(new File(inputFile));        while (scanner.hasNextLine()) {            String line =…

Goal 1: Update the Fractions Class Here we will overload two functions that will used by the Recipe class later: multipliedBy, dividedBy Previously, these functions took a Fraction object as a parameter. Now ADD an implementation that takes an integer as a parameter. The functionality remains the same: Instead of multiplying/dividing the current object with another Fraction, it multiplies/divides with an integer (affecting numerator/denominator of the returned object). For example; a fraction 2/3 when multiplied by 4 becomes 8/3. Similarly, a fraction 2/3 when divided by 4 becomes 1/6. Goal 2: Update the Recipe Class The Recipe constructors so far did not specify how many servings the recipe is for. We will now add a private member variable of type int to denote the serving size and initialize it to 1. This means all recipes are initially constructed for a single serving. Update the overloaded extraction operator (<<) to include the serving size (see sample output below for an…

Java-  Suppose that Vehicle is a class and Car is a new class that extends Vehicle. Write a description of which kind of assignments are permitted between Car and Vehicle variables.

In python and include doctring: First, write a class named Movie that has four data members: title, genre, director, and year. It should have: an init method that takes as arguments the title, genre, director, and year (in that order) and assigns them to the data members. The year is an integer and the others are strings. get methods for each of the data members (get_title, get_genre, get_director, and get_year). Next write a class named StreamingService that has two data members: name and catalog. the catalog is a dictionary of Movies, with the titles as the keys and the Movie objects as the corresponding values (you can assume there aren't any Movies with the same title). The StreamingService class should have: an init method that takes the name as an argument, and assigns it to the name data member. The catalog data member should be initialized to an empty dictionary. get methods for each of the data members (get_name and get_catalog). a method named add_movie that takes a Movie…

In C++ Create a new project named lab8_1. You will be implementing two classes: A Book class, and a Bookshelf class. The Bookshelf has a Book object (actually 3 of them). You will be able to choose what Book to place in each Bookshelf.  Here are their UML diagrams  Book class UML Book - author  : string- title   : string- id      : int- count   : static int + Book()+ Book(string, string)+ setAuthor(string) : void+ setTitle(string) : void+ print() : void+ setID() : void And the Bookshelf class UML Bookshelf - book1 : Book- book2 : Book- book3 : Book + Bookshelf()+ Bookshelf(Book, Book, Book)+ setBook1(Book) : void+ setBook2(Book) : void+ setBook3(Book) : void+ print() : void Some additional information: The Book class also has two constructors, which again offer the option of declaring a Book object with an author and title, or using the default constructor to set the author and title later, via the setters . The Book class will have a static member variable…