Driver.java

package ass2_1231279_1;
import java.util.*;

public class Driver {

    public static void displayVehiclesByPrice(Vehicle[] vehicles) {
        for (int i = 0; i < vehicles.length - 1; i++) {
            for (int j = 0; j < vehicles.length - 1 - i; j++) {
                if (vehicles[j].getRentalRatePerDay() > vehicles[j + 1].getRentalRatePerDay()) {
                    Vehicle temp = vehicles[j];
                    vehicles[j] = vehicles[j + 1];
                    vehicles[j + 1] = temp;
                }
            }
        }
        System.out.println("Vehicles sorted by price (ascending):");
        for (Vehicle vehicle : vehicles) {
            vehicle.printInfo();
        }
    }

    private static Vehicle findVehicleByRegistrationNumber(Vehicle[] availableVehicles, String regNumber) {
        for (Vehicle vehicle : availableVehicles) {
            if (vehicle.getRegistrationNumber().equalsIgnoreCase(regNumber)) {
                return vehicle;
            }
        }
        return null;
    }

    
    private static void displayAvailableVehicles(Vehicle[] availableVehicles) {
        for (Vehicle vehicle : availableVehicles) {
            if (vehicle.isAvailable()) {
                vehicle.printInfo();
            }
        }
    }
    public static void displayVehiclesByType(Vehicle[] vehicles) {
        for (int i = 0; i < vehicles.length - 1; i++) {
            for (int j = 0; j < vehicles.length - 1 - i; j++) {
                if (vehicles[j].getType().compareToIgnoreCase(vehicles[j + 1].getType()) > 0) {
                    Vehicle temp = vehicles[j];
                    vehicles[j] = vehicles[j + 1];
                    vehicles[j + 1] = temp;
                }
            }
        }
        System.out.println("Vehicles sorted by type (alphabetical order):");
        for (Vehicle vehicle : vehicles) {
            vehicle.printInfo(); 
        }
    }

    private static Customer findCustomerById(Customer[] customers, int id) {
        for (Customer customer : customers) {
            if (customer.getId() == id) {
                return customer;
            }
        }
        return null;
    }


    public static Scanner scan = new Scanner(System.in);
    public static void main (String [] args) {
        Vehicle[] availableVehicles = {
            new Vehicle("Car", "ABC123", "Toyota", 50.0, true),
            new Vehicle("Bike", "DEF456", "Honda", 20.0, true),
            new Vehicle("Truck", "GHI789", "Ford", 80.0, true),
            new Vehicle("Car", "JKL012", "Hyundai", 55.0, true),
            new Vehicle("Bike", "MNO345", "Yamaha", 160.0, true)
        };
    
        System.out.println("Enter number of customers: ");
        
        int n = scan.nextInt();
        scan.nextLine();
    
        Customer[] customers = new Customer[n];
    
        for (int i = 0; i < n; i++) {
            System.out.println("Enter details for customer " + (i + 1) + ":");
            System.out.print("Enter name: ");
            String name = scan.nextLine();
    
            System.out.print("Enter ID: ");
            int id = scan.nextInt();
    
            scan.nextLine(); 
            System.out.print("Enter License Number: ");
            String licenseNumber = scan.nextLine();
    
            System.out.print("Enter Maximum number of vehicles can rent by this customer: ");
            int maxVehicles = scan.nextInt();
            scan.nextLine();
            customers[i] = new Customer(name, id, licenseNumber, maxVehicles);
        }
    
        System.out.println("Available vehicles for rental:");
        displayAvailableVehicles(availableVehicles);
    
        for (int i = 0; i < n; i++) { 
            System.out.println("Customer " + (i + 1) + " renting process:");
            int wantToRent;
            System.out.print("Enter the number of vehicles to rent now: ");
            wantToRent = scan.nextInt(); 
    
            for (int j = 0; j < wantToRent; j++) {
                if (customers[i].getCurrentRentedCount() >= customers[i].getMaxVehicles()) {
                    System.out.println("You have reached your rental limit.");
                    break;
                }
    
                System.out.print("Enter registration number of vehicle to rent (or type 'exit' to stop renting): ");
                String input = scan.next();
    
                if (input.equalsIgnoreCase("exit")) {
                    System.out.println("Rental process ended by customer...");
                    break;
                }
    
                Vehicle vehicleToRent = findVehicleByRegistrationNumber(availableVehicles, input);
                
                if (vehicleToRent == null) {
                    System.out.println("Vehicle not found, please try again.");
                } else if (!vehicleToRent.isAvailable()) {
                    System.out.println("Vehicle not available, please choose another.");
                } else {
                    System.out.print("Enter rental days: ");
                    int rentalDays = scan.nextInt();
                    customers[i].rentVehicle(vehicleToRent);
                    System.out.println("Vehicle " + vehicleToRent.getRegistrationNumber() + " rented successfully.");
                }
            }
        }
        int choice = 0;
        while (choice != 8) {
            System.out.println("Menu Options:");
            System.out.println("1: Print Customer Information");
            System.out.println("2: Display Total Rental Cost for a Customer");
            System.out.println("3: Count Rented Vehicles by Type");
            System.out.println("4: Rent a New Vehicle");
            System.out.println("5: Return a Vehicle");
            System.out.println("6: Display All Available Vehicles in Ascending Order of Price");
            System.out.println("7: Display All Available Vehicles in Alphabetical Order of Type");
            System.out.println("8: Exit");
            
            System.out.print("Enter your choice: ");
 choice = scan.nextInt();

 
 
            switch (choice) {
                case 1:
                    System.out.print("Enter Customer ID: ");
                    int customerId1 = scan.nextInt();
                    Customer customer1 = findCustomerById(customers, customerId1);
                    if (customer1 != null) {
                        customer1.printInfo();
                    } else {
                        System.out.println("Customer not found.");
                    }
                    break;

                case 2: 
                    System.out.print("Enter Customer ID: ");
                    int customerId2 = scan.nextInt();
                    Customer customer2 = findCustomerById(customers, customerId2);
                    System.out.print("Enter the number of rental days: ");
                    int rentalDays = scan.nextInt();
                    if (customer2 != null) {
                        double totalCost = customer2.calculateRent(rentalDays);
                        System.out.println("Total Rental Cost: $" + totalCost);
                    } else {
                        System.out.println("Customer not found.");
                    }
                    break;

                    
                    
                    case 3:
                    System.out.print("Enter Customer ID: ");
                    int customerId3 = scan.nextInt();
                    Customer customer3 = findCustomerById(customers, customerId3);
                    if (customer3 != null) {
                        System.out.print("Enter Vehicle Type: ");
                        String vehicleType = scan.next();
                        int count = customer3.countVehiclesByType(vehicleType);
                        System.out.println("Number of " + vehicleType + "s rented by " + customer3.getName() + ": " + count);
                    } else {
                        System.out.println("Customer not found.");
                    }
                    break;
                    
                    
                case 4: 
                    System.out.print("Enter Customer ID: ");

                    int customerId4 = scan.nextInt();
                    Customer customer4 = findCustomerById(customers, customerId4);
                    if (customer4 != null) {
                        System.out.print("Enter Vehicle Registration Number: ");
                        String regNumber = scan.next();
                        Vehicle vehicleToRent = findVehicleByRegistrationNumber(availableVehicles, regNumber);
                        if (vehicleToRent != null && vehicleToRent.isAvailable()) {
                            customer4.rentVehicle(vehicleToRent);
                            
                           
                            System.out.println("Vehicle rented successfully.");
                        } else {
                            System.out.println("Vehicle not available.");
                        }
                    } else {
                        System.out.println("Customer not found.");
                    }
                    break;

                    
                    
                case 5:
                    System.out.print("Enter Customer ID: ");
                    int customerId5 = scan.nextInt();
                    Customer customer5 = findCustomerById(customers, customerId5);
                    if (customer5 != null) {
                        System.out.print("Enter Vehicle Registration Number: ");
                        String regNumberToReturn = scan.next();
                        Vehicle vehicleToReturn = findVehicleByRegistrationNumber(availableVehicles, regNumberToReturn);
                        if (vehicleToReturn != null) {
                            customer5.returnVehicle(vehicleToReturn);
                            System.out.println("Vehicle returned successfully.");
                        } else {
                            System.out.println("Vehicle not found.");
                        }
                    } else {
                        System.out.println("Customer not found.");
                    }
                    break;

                case 6: 
                    displayVehiclesByPrice(availableVehicles);
                    break;

                case 7:
                    displayVehiclesByType(availableVehicles);
                    break;

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

                default:
                    System.out.println("Invalid choice. Please try again.");
                    break;
            }
        }
        scan.close();
    }
}