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Java Java Objects (Retired) Harnessing the Power of Objects Incrementing

Isam Al-Abbasi
Isam Al-Abbasi
2,058 Points
Posted by Isam Al-Abbasi
Isam Al-Abbasi
2,058 Points

Help with increment challenge please?

I watched the video previous to this challenge more than 5 times and I still don't know where to begin to with this challenge!! It's really frustrating!! Steve Hunter Craig Dennis

here is the question: 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;
  }

}

1 Answer

Grigorij Schleifer
Grigorij Schleifer
10,365 Points
Grigorij Schleifer
Grigorij Schleifer
10,365 Points

Hi Isam,

inside the charge() method you should create a while loop.

  • the while condition should say if not isFullyCharged()
  • increment mBarsCount

Here as code spoiler :

public void charge() {
    while (!isFullyCharged()) {
// use the isFullyCharged method and the ! sign
      mBarsCount++;
// if is NOT fully charged 
// increment the count
    }
  }

Let me know if you need more help :)

Grigorij

Isam Al-Abbasi
Isam Al-Abbasi
2,058 Points
Isam Al-Abbasi
Isam Al-Abbasi
2,058 Points

Hello Grigorij, thank you for your answer. But unfortunately I still don't know how to do it?? I'm sorry but it looks like my mind gone completely blank!!

Grigorij Schleifer
Grigorij Schleifer
10,365 Points
Grigorij Schleifer
Grigorij Schleifer
10,365 Points

Hey no problem,

I have edited the answer a little bit :)

Isam Al-Abbasi
Isam Al-Abbasi
2,058 Points
Isam Al-Abbasi
Isam Al-Abbasi
2,058 Points

Thank you so much for your help Grigori, I got it now. My mistake was I was using if statement to put the condition inside the while method and that's where I got confused how to structure my code!!

Grigorij Schleifer
Grigorij Schleifer
10,365 Points
Grigorij Schleifer
Grigorij Schleifer
10,365 Points

:thumbsup:

Glad I could help !

Keep on doing :)

And don´t forget to take breaks ...