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How to solve this problem

Okay, so let's use our new isFullyCharged helper method to change our implementation details of the charge method. 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

GoKart.java
```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;
}

while (mBarsCount < MAX_ENERGY_BARS)  {
System.out.printf("Energy BARS", mBarsCount);
if !(mBarsCount == MAX_ENERGY_BARS)
{
mBarsCount++;
}
}

}
```

Hi

Please be careful with the { } placements

You have

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

while (mBarsCount < MAX_ENERGY_BARS) { System.out.printf("Energy BARS", mBarsCount); if !(mBarsCount == MAX_ENERGY_BARS) { mBarsCount++; } }

I believe it should be (not tested)

```    public boolean isFullyCharged() {
while (mBarsCount < MAX_ENERGY_BARS)  {
mBarsCount++;
System.out.printf("Energy BARS", mBarsCount);
}
return mBarsCount;
}
```