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Java Java Objects (Retired) Harnessing the Power of Objects Method Signatures

Daniel Robinson
Daniel Robinson
4,468 Points
Posted by Daniel Robinson
Daniel Robinson
4,468 Points

I have no idea what to do here, please help

Do I replace the line of dialogue with: drive.line(); ? I am just lost, and would really appreciate any help you could give. Thanks.

GoKart.java 
public class GoKart {
  public static final int MAX_BARS = 8;
  private String mColor;
  private int mBarsCount;

  public GoKart(String color) {
    mColor = color;
    mBarsCount = 0;
  }

  public String getColor() {
    return mColor;
  }

  public void drive(int laps) {
    // Other driving code omitted for clarity purposes
    mBarsCount -= laps;
  }

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

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

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

}

2 Answers

Jeremy Hill
Jeremy Hill
29,567 Points
Jeremy Hill
Jeremy Hill
29,567 Points

This challenge is doing two things:

  1. Having you do method signatures.
  2. Having you call a method inside another method.

The current drive() method takes an int argument allowing the user to pass in the number of laps to travel. They now want you to create another drive() method that doesn't take any parameters so what you want to do is call the original drive() method INSIDE the new one and pass a 1 in as an argument in which will make it a drive() method that does just one lap.