Modify the drive method to define a parameter of how many laps should be driven. Update the method body to handl...

Question

im stuck in this

GoKart.java

class GoKart {
  public static final int MAX_BARS = 8;
  private String color;
  private int barCount;
  private int lapsDriven;

  public void drive(laps) {

}

  public GoKart(String color) {
    this.color = color;
  }

  public String getColor() {
    return color;
  }
  public void charge() {
    barCount = MAX_BARS;
  }

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

  public boolean isFullyCharged() {
    return MAX_BARS == barCount;
  }

  public void drive() {
    lapsDriven++;
    barCount--;
  }
}

Answer 1 · 2017-04-07T20:06:20Z

April 7, 2017 8:06pm

This challenge is asking you to change the method to take a parameter that defines the number of laps you want to drive so that if you wanna drive 5 laps, instead of calling drive(); 5 times you just call it once with the parameter 5 like so: drive(5);.

Now obviously you have to change up the method for that to work correctly. Here's one way to do it:

  public void drive() {
    lapsDriven++;
    barCount--;
  }

  public void drive(int numberOfLaps) {
  while (numberOfLaps > 0) {
      drive();
      numberOfLaps--;
    }
  }

This will call the normal drive method and decrement your numberOfLaps until that reaches 0. This introduces a bug by the way because you can give a parameter for numberOfLaps higher than 8 and that will result in your lapsDriven variable to be more than 8 and your barCount to be less than 0. If i remember correctly one of the following challenges asks you to fix this.

Hope i could help

Matthias :)

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Fredy Lopez

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Modify the drive method to define a parameter of how many laps should be driven. Update the method body to handl...

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Matthias Margot

Matthias Margot