MainClass.java

package carbookingsystem1;

import java.util.ArrayList;
import java.util.InputMismatchException;
import java.util.Scanner;
import java.util.*;

public class MainClass {

    public static ArrayList<Car> arrayList = new ArrayList<>();
    public static ArrayList<Reservation> reservationList = new ArrayList<>();

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        int choice = 0;
        System.out.println("-- Welcome TO Our Car Booking System -- ");
        do {
            try {
                displayMenu();
                choice = scanner.nextInt();

                fillList(arrayList);
                switch (choice) {
                    case 1:
                        displayArrayElements();

                        break;

                    case 2:
                        makeReservation();
                        break;

                    case 3:
                        cancelReservation();
                        break;

                    case 4:
                        displayReservation();
                        break;

                    case 5:
                        writeFile();
                        break;

                    case 6:
                        readFile();
                        break;

                    case 7:
                        GUI.main(null);
                        break;

                    case 8:
                        System.out.println("Exiting the program.");
                        break;

                    default:
                        System.out.println("Invalid choice.\n"
                                + "Please select a valid option.");

                }
            } catch (InputMismatchException e) {
                System.err.println("Incorrect type input !");
                scanner.next();
            } catch (Exception e) {
                System.err.println(e.getMessage());
            }

        } while (choice != 9);

    }

    private static void displayMenu() {
        System.out.println("======= Menu =======");
        System.out.println("1.Display list Car");
        System.out.println("2.Make a reservation");
        System.out.println("3.Cancel a reservation");
        System.out.println("4.Display reservation");
        System.out.println("5.Write to a text file");
        System.out.println("6.Read from a text file");
        System.out.println("7.GUI");
        System.out.println("8.Exit");

        System.out.print("*** Enter the option number : ");
        System.out.println("");
    }

    public static void fillList(ArrayList<Car> arryList) {
        SpecialFeature fe1 = new SpecialFeature("Massaging Seats");
        SpecialFeature fe2 = new SpecialFeature("Wireless Phone Charging");
        SpecialFeature fe3 = new SpecialFeature("Night Mode Camera");
        SpecialFeature fe4 = new SpecialFeature("Bluetooth Conectivity");

        SpecialFeature[] car1 = {fe2, fe3};
        arrayList.add(new Sport(01, "Ferrari SP-8", car1, true, "Black", 600, 500));
        arrayList.add(new Sport(02, "McLaren-750S", car1, true, "Blue", 500, 350));

        SpecialFeature[] car2 = {fe3, fe4};
        arrayList.add(new Compact(true, 03, "Lexus250", car2, false, "Blue"));
        arrayList.add(new Compact(false, 04, "Honda Civic", car2, true, "Gray"));

        SpecialFeature[] car3 = {fe1, fe2};
        arrayList.add(new Luxury(4, 05, "BMW7", car3, true, "White"));
        arrayList.add(new Luxury(2, 06, "Rolls-Royce", car3, true, "White"));

    }

    public static void displayArrayElements() {
        System.out.println("---- Our Car list elements: ----");
        for (Car element : arrayList) {
            System.out.println(element);
            element.DisplaySpecialFeatures(); //Polymorphismic method

            System.out.printf("The Rental price is: %d SAR %n", element.calculateRentalPrice());

            if (element instanceof Sport) {
                ((Sport) element).sportMode(); //downcasting
            }
            System.out.println("Total Number of cars: " + Car.getTotalNumberOfCars());
            System.out.println("---------------------");
            
        }
    }

    public static void makeReservation() {
        Scanner scanner = new Scanner(System.in);
        System.out.print(" Please Enter car ID you want: ");
        int id = scanner.nextInt();
        Car car = null;
        boolean found = false;
        for (Car element : arrayList) {
            if (element.getCarID() == id) {
                car = element;
                found = true;
            }
        }

        if (found == false) {
            System.out.println("The car with ID " + id + " is not found");
            return;
        }

        System.out.print("How many days you want to rent the car ? ");
        int Day = scanner.nextInt();
        if (Day < 1 || Day > 30) {
            System.out.println("Invalid duration !");
        }
        System.out.println("Enter your full name : ");
        String Name = scanner.next();
        System.out.println("Enter your phone Number : ");
        String PhoneNum = scanner.next();
        System.out.println("Enter your ID : ");
        String ID = scanner.next();
        System.out.println("Enter your Email : ");
        String email = scanner.next();
        
        Customer customer = new Customer(email, ID, PhoneNum, Name);
        //Object for customer class
        
        Reservation b = new Reservation(customer, car, Day);
        // Object for reservation class
        
        System.out.println("Your cost for " + Day + " Day is " + b.calculateAmount());
        System.out.println("Your Reservation ID is : " + b.getReservationID());
        b.setReservationStatus("Certain");
        System.out.println("Your Reservation status is : " + b.getReservationStatus());

        reservationList.add(b);

    } 

    public static void cancelReservation() {
        Scanner scanner = new Scanner(System.in);
        boolean found;
        System.out.print("Enter the Reservation id you want to cancel : ");
        int reservationID = scanner.nextInt();
        found = false;
        for (Reservation e : reservationList) {
            if (e.getReservationID() == reservationID) {
                e.cancelReservation();
                found = true;
            }
        }
        if (found == false) {
            System.out.println("Reservation with ID " + reservationID + " is not found.");
        }
    }

    public static void displayReservation() {
        Scanner scanner = new Scanner(System.in);
        boolean found;
        System.out.print("Enter the Reservation id you want to Show: ");
        int reservationID = scanner.nextInt();
        found = false;
        for (Reservation e : reservationList) {
            if (e.getReservationID() == reservationID) {

                System.out.println(e);
                System.out.println("Your total cost: " + e.calculateAmount());
                found = true;
            }
        }
        if (found == false) {
            System.out.println("Reservation with ID " + reservationID + "is not found.");
        }
    }

    private static void writeFile() {
        WriteText wf = new WriteText();
        wf.openTextFile("Cars.txt");
        if (arrayList.isEmpty()) {
            System.out.println("No cars yet.");
            return;
        } else {
            for (Car ele : arrayList) {
                wf.writeToFile(ele);
            }
        }
        wf.closeFile();
        System.out.println("All cars saved to the text file Cars.txt");
    }

    private static void readFile() {
        ReadText rt = new ReadText();
        rt.openTextFile("Cars.txt");
        rt.readFromFile();
        rt.closeFile();
    }
}