TERM 2 Lesson 4

public class Vehicle
{
  private int location;

  public Vehicle()
  {
    location = 0;
  }

  public Vehicle(int loc)
  {
    if (loc >= -20 && loc <= 20)
      location = loc;
    else if (loc < -20)
      location = -20;
    else
      location = 20;
  }

  void forward()
  {
    if (location < 20)
      location++;
  }

  void backward()
  {
    if (location > -20)
      location--;
  }

  int getLocation()
  {
    return location;
  }

  public String toString()
  {
    for (int i = -20; i < location; i++)
      System.out.print(" ");
    return "@";
  }

}