ParkingLot

public enum VehicleSize {Motorcycle, Compact, Large}

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

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

    public void parkInSpot(ParkingSpot s) {
        parkingSpots.add(s);
    }

    public void clearSpots() {}

    public abstract boolean canFitInSpot(ParkingSpot spot);
}

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

    public boolean canFitInSpot(ParkingSpot spot) {}
}

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

    public boolean canFitInSpot(ParkingSpot spot) {}
}

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

    public boolean canFitInSpot(ParkingSpot spot) {}
}

public class ParkingLot {
    private Level[] levels;
    private final int NUM_LEVELS = 5;

    public parkingLot() {}

    public boolean parkVehicle (Vehicle vehicle) {}
}

public class Level {
    private int floor;
    private ParkingSpot[] spots;
    private int availableSpots = 0;
    private static final int SPOTS_PER_ROW = 10;

    public level (int flr, int numberSpots) {}

    public int availableSpots() {
        return availableSpots;
    }

    public boolean parkVehicle(Vehicle vehicle) {}

    private boolean parkStartingAtSpot(int num, Vehicle v) {}

    private int findAvailableSpots(Vehicle vehicle) {}

    public void spotFreed() {
        availableSpots++;
    }
}

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;
    }

    public boolean park (Vehicle v) {}

    public int getRow() {
        return row;
    }

    public int getSpotNumber() {
        return spotNumber;
    }

    public void removeVehicle() {

    }
}