Non-Static Methods.

Hi Thomas,

Static methods can be accessed straight off the class; no instance of that class is needed.

You have tried to use charge and isFullyCharged straight off the class:

while(GoKart.charge()) /// GoKart class, not instance
 if(GoKart.isFullyCharged()) // same again

You don't need to reference the GoKart class directly inside itself. You are trying to use instance method isFullyCharged() inside charge() to see if the instance using this functionality has a complete charge. Here:

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

You are modifying the existing charge method. Inside it, you test if !isFullyCharged() returns false (not! true) and if it does, you increment mBarsCount. You don't need to specify the class as you are working inside it.

I hope that makes sense.

Steve.