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Java Java Objects (Retired) Harnessing the Power of Objects Throwing Exceptions

exception throws is killing I can't do it challenge task 1 of 1.........

let's throws .................number of laps there is omitted code why?

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() {
    drive(1);
  }

  public void drive(int laps) {
    // Other driving code omitted for clarity purposes
   int count ;
    mBarsCount -= laps;
    if  (count=mBarsCount-laps=0)

     throws new IllegalArgumentException ("Not enough battery remains");



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

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

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

}

1 Answer

Ollie Prentice
Ollie Prentice
11,685 Points

You're close, but there are a few things wrong.

First, the IllegalArgumentException needs to occur before the mBarsCount are -= from the laps, incase someone sets the laps above the battery level.

Second, you don't need to create a new variable, all you need is the laps and mBarsCount.

Third, you are missing curly braces in code. one { and two }}.

The code below will complete the challenge. Read through it and I hope it makes sense! :)

  public void drive(int laps) {
    // Other driving code omitted for clarity purposes
     if (mBarsCount < laps) {
      throw new IllegalArgumentException("Not enough battery remains");
     }
    mBarsCount -= laps;
  }