In java, design a rental car program, where the user is can look at the available cars at the rental agency and make a reservation for the car of their choice.

Key Points:

• Each car will be identified by its VIN
• There are three types of vehicles that can be rented, which are:
  • Car:
    • Must show brand, model, and year, mpg rating, number of seating
  • SUV:
    • Must show brand, model, and year, mpg rating, number of seating, cargo capacity
  • Truck:
    • Must show the length (in feet), mpg rating, and load capacity (lbs.)
• The program should be able to do the following:
  • Populate the collection of vehicles
  • Add vehicles to collection
  • Reserve a vehicle
  • Display reservation
  • Cancel reservation
  • Display all vehicles
  • Display non-reserved vehicles

The following classes should be utilized:

• Vehicle Class
  • Must be Abstract
  • Contains the following variables:
    • private String description // stores make-model-year for cars and SUVs, stores length for trucks
    • private int mpg // miles per gallon rating
    • private String vin // unique vehicle identification number
    • private Reservation resv // reservation information (a null value means not reserved)
  • A constructor that does the following:
    • Inits with provided description, mpg, VIN
    • Sets resv to null (i.e., newly created vehicles are not yet reserved).
  • Contains the following methods:
    • public int getMpg() { ... }
    • public String getVIN() { ... }
    • public Reservation getReservation() { ... }
    • public abstract String toString(); // ABSTRACT METHOD must be implemented in each subclass
    • public boolean isReserved() { ... }
    • public void reserve(Reservation r) { ... }
    • public cancelReservation() { ... } // throws UnreservedVehicleException if reservation doesnt exist
• A class for each type of vehicle (car, suv, and truck)
  • Exist as subclasses of the vehicle class and contains constructor, variables, and toString method

• Reservation Class
  • Contains the following variables:
    • private String creditCardNum; // credit card number vehicle reserved under
    • private TimeSpan rentalPeriod; // e.g., four days, two weeks, one month
    • private boolean insuranceSelected; // set to true if optional daily insurance wanted
  • Contains the following methods:
    • getters
    • setters
    • constructor
    • toString

• Timespan Class
  • Contains the following variables:
    • private char timeUnit; // D (day), W (week), M (month)
    • private int numUnits; // num of days, weeks or months
  • Includes constructor and getters

• Vehicles Class
  • Contains the following variables:
    • private Vehicle[ ] agency_vehicles; // array of Vehicle objects (ArrayList type may NOT be used)
    • private int current // used by iterator methods only
  • Contains the following methods:
    • Constructor
    • public void add(Vehicle v) // adds a new vehicle to the collection
    • public Vehicle getVehicle(String VIN) // throws VINNotFoundException if no vehicle found for provided VIN
  • Contains the following iterator methods:
    • public void reset() // resets to first vehicle in list
    • public boolean hasNext() // returns true if more vehicles in list to retrieve
    • pubic Vehicle getNext() // returns next vehicle in list

• Main Class
  • Prompts user with the following menu:
    • 1 - Display all vehicles
    • 2 - Display available vehicles
    • 3 - Reserve a vehicle
    • 4 - Display a Reservation
    • 5 - Cancel a Reservation
    • 6 - Add a vehicle
    • 7 - Quit