Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

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

Nicolas Curat
Nicolas Curat
2,995 Points

Cant Understand Challenge

If someone can explain me how to write this challenge i'll really appreciate it, cause i can't understand what is that i'm doing wrong, or if i am doing at least what the challenge asks me for.

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 boolean chargeB() {
    boolean wasChargeB = false;
    if (!isBatteryEmpty()) {
      mBarsCount++;
      wasChargeB = true;
    }

    while (chargeB()) {
    System.out.println("Charging!");
    }
     return wasChargeB;
  }


  public void charge() {
    mBarsCount = MAX_ENERGY_BARS;

  }

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

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

}

1 Answer

Dmitry Ponomarenko
Dmitry Ponomarenko
18,175 Points

Challenge asks you to implement a method which adds one bar to your mBarsCount. Your method charge() should check if battery is not fully charged and only after that add one bar to mBarsCount.

Nicolas Curat
Nicolas Curat
2,995 Points

Thanks, i corrected it and now i have done it :)