public class PaperVehicle extends Vehicle
speed, time, x
PaperVehicle()
int
accelerate(int t)
dummy()
move(int t)
stop()
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
public PaperVehicle()
public int move(int t)
move
Vehicle
public int accelerate(int t)
accelerate
public int stop()
stop
public int dummy()