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Java Java Objects Harnessing the Power of Objects Handling Exceptions

Amir Tamim
Amir Tamim
8,597 Points

Is the website bugged? Why will this not go through?

I wrapped kart.drive in the try-catch and when asked to use the getMessage method I did, still not going through

class Example {

  public static void main(String[] args) {
    GoKart kart = new GoKart("purple");
    if (kart.isBatteryEmpty()) {
      System.out.println("The battery is empty");
    }catch(IllegalArgumentException iae){


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

  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() {

  public void drive(int laps) {
    if (laps > barCount) {
      throw new IllegalArgumentException("The battery is empty");
    lapsDriven += laps;
    barCount -= laps;


1 Answer

Rich Zimmerman
Rich Zimmerman
24,063 Points

code seems to work as far as the Example.java file. The only difference i can see, when the challenge does not succeed is in this line.

throw new IllegalArgumentException("The battery is empty");

In the challenge it's

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