Can someone help me with this question?

Hie. Looking at the challenge what you need to do is change the code for the charge() method. so first go to the charge method and delete the 'mBarsCount = MAX_ENERGY_BARS;' because we wont be needing it anymore. Then inside the curly brackets of the charge() method type: while(!isFullyCharged()){mBarsCount++;}. So the code reads "while its not fully charged, add 1 to mBarsCount until it reaches 8". The charge method's return type is void so the method does not return anything. That worked for me

The challenge asks this from you "Let's make it so it will only charge until the battery reports being fully charged. Let's use the ! symbol and a while loop. Inside the loop increment mBarsCount."

Take notice of what I have made bold. Now it asks you to use "!" because isFullyCharge returns a boolean. True or false according to if it is fully charged or not. For that reason it wants you to keep charging the battery in the function "charge" as long as "isFullCharge" is false, meaning the battery is not full. I hope this helps clear some things up for you :)

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

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() { while(!isFullyCharged()) { mBarsCount++; } }

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

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

}

Thank you Moyo, I had the same problem and its working fine for me too now.

Ahh Gloria, you have just saved me form myself haha! Thank you so much I've been scratching me head on this for ages haha

I had the same error mBarsCount ++; Simple syntax, really. Once it's right, it's almost plain English.

well I haven't got a clue where I am going wrong this is my code...

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() {
    while (!isFullyCharged()) {
      mBarsCount ++;
    }
  }

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

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

Any help would be greatly appreciated, thank you x