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Java Java Objects Harnessing the Power of Objects Handling Exceptions

Gerardo Lopez
Gerardo Lopez
616 Points

getMessage Error

When I check my work an error appears saying that I need to use the getMessage method, but in my code I clearly do.

Example.java
class Example {

  public static void main(String[] args) {
    GoKart kart = new GoKart("purple");
    if (kart.isBatteryEmpty()) {
      System.out.println("The battery is empty");
    }
    try {
      kart.drive(42);
    } catch(IllegalArgumentException iae) {
      System.out.println("Whoa there!");
      System.out.printf("The error is %s %n", iae.getMessage());
      }
  }

}
GoKart.java
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() {
    drive(1);
  }

  public void drive(int laps) {
    if (laps > barCount) {
      throw new IllegalArgumentException("not enough battery");
    }
    lapsDriven += laps;
    barCount -= laps;
  }

}

2 Answers

Laban Leuchovius
Laban Leuchovius
3,520 Points

Yes, you have definitely done it right. But I think that this particular challenge only consider your answer to be right if you only put "System.out.println(iae.getMessage());" inside the catch block.

Gerardo Lopez
Gerardo Lopez
616 Points

Dang, I switched out my code for the code you wrote but it still says that I'm not using the getMessage method.

That looks like valid code, and it worked for me when I entered it. Perhaps you were just running into a temporary problem with the server, that has since gone away?

Gerardo Lopez
Gerardo Lopez
616 Points

I thought it might be that too but it still doesn't work.