Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Java Java Objects Harnessing the Power of Objects Overload Methods

I am unable to solve this task, help me in moving forward

what is the question trying to convey?

class GoKart {
  public static final int MAX_BARS = 8;
  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(int lapsToBeDriven) {
    lapsDriven+= lapsToBeDriven;


2 Answers

Jennifer Nordell
Jennifer Nordell
Treehouse Teacher

Hi there! Let's see if I can rephrase this a bit and get you started. Right now, our drive method takes no parameters. Each time we run it, the GoKart goes exactly one lap... no more and no less. We would like a variation on that drive method that could take the number of laps to run instead of just one every time. Maybe I want to tell the GoKart to run 3 laps instead of just one. The parameter will be of type int because we're never going to tell the GoKart to run 3.298 laps. That would be silly :smiley:

The lapsDriven should be incremented by the number of laps we told it to run. So if we told it to run 3, lapsDriven should be incremented by 3. Then we decrease the energy bar by the same amount.

Hope this helps! :sparkles:

edited for additional hint :bulb: The only thing missing from your code right now is that we might have told the GoKart to run 3 laps. You're incrementing by that number, but you're still only depleting the energy bar by one.

Thank a lot!!!