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Java Java Objects (Retired) Harnessing the Power of Objects Incrementing

Benneth Paredis
Benneth Paredis
4,597 Points

need help

i've been on this code challenge already 2 hours and i've watched the video several times (which i understand) but it keeps saying im doing the code challenge wrong.

public class GoKart {
  public static final int MAX_ENERGY_BARS = 8;
  private String mColor;
  private int mBarsCount;

  public GoKart(String color) {
    mColor = color;
    mBarsCount = 0;

  public String getColor() {
    return mColor;

  public void charge() {
    mBarsCount = MAX_ENERGY_BARS;

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

  public boolean isFullyCharged() {
    return mBarsCount == MAX_ENERGY_BARS;


2 Answers

Yahya Saadi
Yahya Saadi
4,277 Points

Your charge() method should look like this below:

public void charge() { while(!isFullyCharged()) { mBarsCount++; } mBarsCount = MAX_ENERGY_BARS; }

Hope that helps

Kourosh Raeen
Kourosh Raeen
23,733 Points

I think you asked about this a couple of days ago and I posted a response. You can find it here: https://teamtreehouse.com/community/java-objects-incrementing-code-challenge-need-help