CareerCup

public interface vehicles{
public boolean park(ParkingSlot slot);
}

public class Motorbike implement vehicles{
public boolean park(ParkingSlot slot){
if(slot is motobikeslot) return true;
return false;
}
}

public class Cars implement vehicles{
public boolean park(ParkingSlot slot){
if(slot is Carslot) return true;
return false;
}
}

public class handicappedCars implement vehicles{
public boolean park(ParkingSlot slot){
if(slot is Carslot or handicappedslot) return true;
return false;
}
}

We have to maintain two states. One indicating the available parking lots(category wise) and parked lots.
HashMap of Vehicle.Type and Stack of positions for holding available parking lots.
HashMap of Position and Vehicle.

{
import java.util.List;

public abstract class Vehicle
{
List<ParkingLot> pLst = null;

ParkingLot plot = null;

public void setpLst(List<ParkingLot> pLst)
{
this.pLst = pLst;
}

public abstract void parkVehicle();

public ParkingLot getParkingLot(List<ParkingLot> plist, ParkingLotType plt)
{

for (ParkingLot pL : plist)
{

if (pL.getpLType() == plt)
{
if (pL.isOccupied() == false)
{
pL.setOccupied(true);
plist.remove(pL);
return pL;
}

}

}

return null;
}

public void unParkVehicle(ParkingLot pL)
{

pL.setOccupied(true);
pLst.add(pL);
}

}

class MotorBike extends Vehicle
{

@Override
public void parkVehicle()
{

ParkingLotType plTArray = ParkingLotType.MOTORBIKE;

plot = super.getParkingLot(pLst, plTArray);

}

}

class Car extends Vehicle
{

@Override
public void parkVehicle()
{
// TODO Auto-generated method stub

// plTArray = new ParkingLotType[1];
ParkingLotType plTArray = ParkingLotType.CAR;

plot = super.getParkingLot(pLst, plTArray);

}

}

class HandiCar extends Vehicle
{

@Override
public void parkVehicle()
{

ParkingLotType plTArray = ParkingLotType.HANDICAPPED_LOT;

plot = super.getParkingLot(pLst, plTArray);

if (plot == null)
plot = super.getParkingLot(pLst, ParkingLotType.CAR);

}

}

class ParkingLot
{
private int id;
private boolean occupied = false;
private ParkingLotType pLType;

public int getId()
{
return id;
}

public ParkingLot(int id, boolean occupied, ParkingLotType pLType)
{
super();
this.id = id;
this.occupied = occupied;
this.pLType = pLType;
}

public ParkingLotType getpLType()
{
return pLType;
}

public boolean isOccupied()
{
return occupied;
}

public void setOccupied(boolean occupied)
{
this.occupied = occupied;
}

@Override
public int hashCode()
{
final int prime = 31;
int result = 1;
result = prime * result + id;
return result;
}

@Override
public boolean equals(Object obj)
{
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
ParkingLot other = (ParkingLot) obj;
if (id != other.id)
return false;
return true;
}

}

enum ParkingLotType
{
MOTORBIKE, CAR, HANDICAPPED_LOT;
}

}

;DROP TABLE --

;DROP TABLE --

Sorry..was learning SQL injection..typed in the wrong site.

Sorry..was learning SQL injection..typed in the wrong site.