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Java Java Objects (Retired) Harnessing the Power of Objects Method Signatures

Fatimah Ghazal
Fatimah Ghazal
1,848 Points
Posted by Fatimah Ghazal
Fatimah Ghazal
1,848 Points

Hi, i have this problem that i need your help with :(

it says : "Remember that you should call the existing drive method and pass in the default parameter of 1. Otherwise you would have to rewrite all that (omitted) code."

GoKart.java 
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 drive(){
   mBarsCount -= 1;

  }


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

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

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

}

1 Answer

Cody Hansen
Cody Hansen
5,517 Points

Currently, you have

public void drive(){
   mBarsCount -= 1;
  }

What the challenge is asking you to do is call the already written drive(int laps) method to avoid rewriting already written code. It wants the new method to only run one single lap. If we were to write that out in the main class, we would write 

drive(1);

Therefore, we should do the same in our new method!

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

I hope this helps!