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

Oliver Løye
Oliver Løye
3,969 Points

HELP - Java Objects - Incrementing and Decrementing - Challenge!

The challenge goes like this:

"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."

I have seen the previous video 5 times but I'm still stuck.. :-(

Can anyone help me?

My while loop is:

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

Apparently its not correct.. :-)

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;
  }

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

}

1 Answer

You need to implement your loop inside the charge() method:

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