import java.util.*; public class Car implements Comparable { private int m_inventory; // the number of cars of this make/model private String m_make; // the make of a car private String m_model; // the model of a car // Creates a new car. // This takes the inventory as a String but the inventory is // stored in the class as an integer. As a result, you must // convert the inventory to an integer. // This Should also set inventory to 0 if the inventory passed // is not a valid integer. public Car(String inventory, String make, String model) { // TODO: Part 6 - use a try/catch to set inventory to 0 // if the inventory is not a valid integer m_inventory = Integer.parseInt(inventory); m_make = make; m_model = model; } // Returns the inventory of cars of this make/model. public int getInventory() { // TODO: Part 1 } // Increases the inventory by one. public void increaseInventory() { // TODO Part 2 } // Decreases the inventory by one. // Don't let the inventory get less than 0. public void decreaseInventory() { // TODO: Part 2 } // Returns the make. public String getMake() { // TODO: Part 1 } // Returns the model. public String getModel() { // TODO: Part 1 } @Override // Returns a string in the following format: // make model (inventory) // For example: Toyota Prius (5) public String toString() { // TODO: Part 1 } @Override // Compares two cars based on their inventory (descending order). public int compareTo(Car other) { // TODO: Part 3 } } import java.util.*; public class Lot { // Given a make, this map should return a list of // all of the cars on the lot of that make. private HashMap> m_cars; // Creates an empty lot. public Lot() { m_cars = new HashMap>(); } // Adds a car to the lot. public void addCar(Car c) { if (m_cars.get(c.getMake()) == null) m_cars.put(c.getMake(), new ArrayList()); m_cars.get(c.getMake()).add(c); } // Return a list of cars on the lot of // the specified make. public ArrayList getCars(String make) { // TODO: Part 4 } // Return a list of cars on the lot of // the specified make. The list should be sorted // by inventory in descending order. public ArrayList getCarsSorted(String make) { // TODO: Part 4 } // Return the total inventory of cars on the lot // of the specified make. public int getInventory(String make) { // TODO: Part 5 } } class Main { public static void main(String[] args) { // Create some car make/models... Car c1 = new Car("10", "Toyota", "Camry"); Car c2 = new Car("4", "Toyota", "Prius"); Car c3 = new Car("16", "Toyota", "Rav4"); Car c4 = new Car("4", "Hyundai", "Kona Electric"); Car c5 = new Car("8", "Honda", "Civic"); Car c6 = new Car("3", "Honda", "CRV"); // Put the cars on a lot... Lot lot1 = new Lot(); lot1.addCar(c1); lot1.addCar(c2); lot1.addCar(c3); lot1.addCar(c4); lot1.addCar(c5); lot1.addCar(c6); // Print the make/models... System.out.println("Make:"); System.out.println(lot1.getCars("Toyota")); System.out.println(lot1.getCars("Hyundai")); System.out.println(lot1.getCars("Honda")); System.out.println(lot1.getCars("Tesla")); System.out.println(); // Print the make/models sorted in descending // order by inventory... System.out.println("Make sorted by inventory:"); System.out.println(lot1.getCarsSorted("Toyota")); System.out.println(lot1.getCarsSorted("Hyundai")); System.out.println(lot1.getCarsSorted("Honda")); System.out.println(lot1.getCarsSorted("Tesla")); System.out.println(); // Print the total inventory by make... System.out.println("Inventory by make:"); System.out.println(lot1.getInventory("Toyota") + " Toyotas"); System.out.println(lot1.getInventory("Hyundai") + " Hyundais"); System.out.println(lot1.getInventory("Honda") + " Hondas"); System.out.println(lot1.getInventory("Tesla") + " Teslas"); System.out.println(); } } this is the output that should be produced by main: Make: [Toyota Camry (10), Toyota Prius (4), Toyota Rav4 (16)] [Hyundai Kona Electric (4)] [Honda Civic (8), Honda CRV (3)] [] Make sorted by inventory: [Toyota Rav4 (16), Toyota Camry (10), Toyota Prius (4)] [Hyundai Kona Electric (4)] [Honda Civic (8), Honda CRV (3)] []