Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Java Java Objects Harnessing the Power of Objects Overload Methods

Problem with exercise, incorrect answer

Hello, I don't understand where is problem. First, i create new methods public int drive (), and i assigned this variables the value 1. Please, tell me where i made a error. thank you very much for your support and time in advance.

Cezary Zalewski

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 laps) {

    public int drive() {
    drive = 1;

1 Answer

Emmanuel C
Emmanuel C
10,636 Points

The task was to create another drive method that took no parameters and called the original drive, that passed in 1 as a parameter.

public void drive(){

Youre basically allowing the drive method to have a default value or a specified value.