ParkingSlot.cs

// Vehicle and its inherited classes. 
public enum VehicleSize { Motorcycle, Compact,Large } 

public abstract class Vehicle 
{ 
	protected ArrayList<ParkingSpot> parkingSpots = 
						new ArrayList<ParkingSpot>(); 
	protected String licensePlate; 
	protected int spotsNeeded; 
	protected VehicleSize size; 

	public int getSpotsNeeded() 
	{ 
		return spotsNeeded; 
	} 
	public VehicleSize getSize() 
	{ 
		return size; 
	} 

	/* Park vehicle in this spot (among others, 
		potentially) */
	public void parkinSpot(ParkingSpot s) 
	{ 
		parkingSpots.add(s); 
	} 


	/* Remove vehicle from spot, and notify spot 
		that it's gone */
	public void clearSpots() { ... } 

	/* Checks if the spot is big enough for the 
		vehicle (and is available). 
		This * compares the SIZE only.It does not 
		check if it has enough spots. */
	public abstract boolean canFitinSpot(ParkingSpot spot); 
} 

public class Bus extends Vehicle 
{ 
	public Bus() 
	{ 
		spotsNeeded = 5; 
		size = VehicleSize.Large; 
	} 

	/* Checks if the spot is a Large. Doesn't check 
	num of spots */
	public boolean canFitinSpot(ParkingSpot spot) 
	{... } 
} 

public class Car extends Vehicle 
{ 
	public Car() 
	{ 
		spotsNeeded = 1; 
		size = VehicleSize.Compact; 
	} 

	/* Checks if the spot is a Compact or a Large. */
	public boolean canFitinSpot(ParkingSpot spot) 
	{ ... } 
} 

public class Motorcycle extends Vehicle 
{ 
	public Motorcycle() 
	{ 
		spotsNeeded = 1; 
		size = VehicleSize.Motorcycle; 
	} 
	public boolean canFitinSpot(ParkingSpot spot) 
	{ ... } 
} 




public class ParkingSpot 
{ 
	private Vehicle vehicle; 
	private VehicleSize spotSize; 
	private int row; 
	private int spotNumber; 
	private Level level; 

	public ParkingSpot(Level lvl, int r, int n, 
						VehicleSize s) 
	{ ... } 

	public boolean isAvailable() 
	{ 
		return vehicle == null; 
	} 

	/* Check if the spot is big enough and is available */
	public boolean canFitVehicle(Vehicle vehicle) { ... } 

	/* Park vehicle in this spot. */
	public boolean park(Vehicle v) {..} 

	public int getRow() 
	{ 
		return row; 
	} 
	public int getSpotNumber() 
	{ 
		return spotNumber; 
	} 

	/* Remove vehicle from spot, and notify 
	level that a new spot is available */
	public void removeVehicle() { ... } 
}