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

kuan baker
kuan baker
435 Points

Not sure what the question refers to, get stuck

I am learning the method signature and working on the drill. Not sure where my problem is.... 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 drive() {
    // Other driving code omitted for clarity purposes
     mBarsCount+=1;
  }

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

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

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

}

1 Answer

Try using the -= operator instead of the += operator :)

public void drive() {
    mBarsCount -= 1;
}

Good luck! ~alex

kuan baker
kuan baker
435 Points

Thank you very much for your help! but the system gives me the following comment "Remember that you should call the existing drive method and pass in the default parameter of 1. Otherwise you would have to rewrite all that (omitted) code." not sure what does it refer to??? Thanks!!