I'm lost on what the purpose of all of this is. Why am I creating another method with the same name?

Hi Rodrigo,

The m prefix is for member variables. This is a coding style used to help distinguish between local variables and class variables. While not required. it is the style we are sticking to during the beginning Java courses, and what you will encounter as/if you get into Android development.

Creating a new method with the same name but different arguments is creating a new method signature. This allows you to overload methods and basically set defaults. In this case you should call the original drive method and pass in a one. This way users of the class can just call drive and it will default to 1 OR they can choose how many laps to drive.

Does that clear things up?

I'm having a hard time with understanding calling the original method and passing a one to it. I'm not asking for just the answer I want to understand why its the correct answer. Do I need to make laps as a class variable then add it to the method. This is what i have so far and I'm sure its wrong.

public void drive() { drive(laps++)

}

This might be incorrect but I think this is how i understand it. When I write this :

public void drive() { drive(1); }

The 1 is replacing laps in this method : public void drive(int laps) {}

I'm getting confused on what you mean by passing the default value.

I accidentally tampered with the code that was added by the program and I can't remember what it was. I recommend Treehouse add a "reset" option to be able to start from scratch on an exercise. Anyhow, can someone help me by providing the original code?

Here's the original code:

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

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

  public String getColor() {
    return mColor;
  }

  public void drive(int laps) {
    // Other driving code omitted for clarity purposes
    mBarsCount -= laps;
  }

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

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

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

}