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Java Java Objects Harnessing the Power of Objects Overload Methods

Mark Palmer
Mark Palmer
1,482 Points

Lost on this one....

Method Overloading exercise part 2, the prompt is telling me Create a new method named drive that accepts no arguments. It should call the newer drive method passing in a 1 for the default. I made a bit of progress and the check work directive states: In your new drive method make sure you call the drive method that takes an int. Pass it a 1, since thats the default. Well i dont know how to get that part done, it seems anywhere i put a 1 doesnt work. Any direction would be appreciated, ive spent waaaaaay too long on this one.

class GoKart {
  public static final int MAX_BARS = 8;
  public static final int MAX_LAPS =3;
  private String color;
  private int barCount;
  private int lapsDriven;

  public GoKart(String color) {
    this.color = color;

  public String getColor() {
    return color;
  public void charge() {
    barCount = MAX_BARS;

  public boolean isBatteryEmpty() {
    return barCount == 0;

  public boolean isFullyCharged() {
    return MAX_BARS == barCount;

  public void drive() {
  lapCount = MAX_LAPS;
  public void drive (int lapCount) {
  lapCount += lapsDriven;
    barCount -= MAX_BARS;

1 Answer

Steven Parker
Steven Parker
229,920 Points

Your new drive() method that takes no parameters still needs to call the modified one that does. The default of 1 will simply be passed to it as the parameter. The parameter-less version doesn't need to do anything other than call the revised one.

Also, the revised one you did for task 1 isn't valid, even though the "check work" mechanism said it passed. Issues it has:

  • the lapsDriven should be increased by the lapCount, not vice-versa
  • The barCount should be reduced by just the lapCount

Update: I sent a notice to the support staff about the challenge accepting invalid code.

Mark Palmer
Mark Palmer
1,482 Points

Thanks Steven, I was able to clear it up today with a fresh mind and your advice :)