Could someone breakdown and explain how to go about doing this? I watched the previous tutorial but I'm not getting it.

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;
  }

}

Answer 1 · 2015-07-14T11:30:10Z

July 14, 2015 11:30am

I'm guess you'd put the following inside the charge method:

// the following reads: while the battery is not fully charged, keep adding 1 to the barCount:

while (!isFullyCharged()) { mBarsCount +=1; }

Explanation:

The isFullyCharged method is a boolean that returns true if mBarsCount is full and false if mBarsCount isn't full yet.

The assignment asks that within the charge method, we should increment mBarsCount until it is full. Since the isFullyCharged method checks to see if the mBarsCount is fully charged, we can use the method in a while loop to constantly check if the mBarsCount is full.

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Ira Salem

Ira Salem

Could someone breakdown and explain how to go about doing this? I watched the previous tutorial but I'm not getting it.

1 Answer

Taiwo O

Taiwo O