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

Benneth Paredis
Benneth Paredis
4,597 Points
Posted by Benneth Paredis
Benneth Paredis
4,597 Points

Java objects incrementing code challenge - need help

It say's that deCharged is wrong but i dont understand why. Can someone help me ?

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;
  }
public boolean deCharged () {
  boolean wasDeCharged = false;
  if (isFullyCharged()) {
    mBarsCount--;
    wasMinusCharged = true;
  }
 while (GoKart.deCharged()){
   System.out.printf ("bzzz!");
 }
}
}

3 Answers

Steve Hunter
Steve Hunter
57,712 Points

Hi there,

Have you linked to the challenge you are struggling with? It involves amending the charge method?

Just checking as I wrote a long answer on this yesterday. Have a look at this thread for that.

Let me know how you get on.

Steve.

Kourosh Raeen
Kourosh Raeen
23,733 Points
Kourosh Raeen
Kourosh Raeen
23,733 Points

Benneth, the instructions for the challenge are asking you to change the implementation details of the charge method, not to create a deCharged method. You need to add a while loop to the charge method. Then inside the loop you need to increment mBarsCount. The loop should terminate when the battery is fully charged and for that we need to use the isFullyCharged method. Take a look at the following code:

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() {
    while(!isFullyCharged()) {
      mBarsCount++;
    }
  }

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

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

}
Justin Wilson
Justin Wilson
461 Points
Justin Wilson
Justin Wilson
461 Points

*facepalm

I have been working on this for 2 hours trying to figure it out on my own. Its as simple as 2 lines of code. Thanks for the help guys.