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Java Java Objects Harnessing the Power of Objects Handling Exceptions

Shirit Dori
Shirit Dori
791 Points

I don't understand my problem here

What am i doing wrong?

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(100);
      System.out.println("this will not happen");
    }catch (IllegalArgumentException iae){
      System.out.println("Whoaa there");
      System.out.println("the error was ");
  }

  }
}
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 remains");
    }
    lapsDriven += laps;
    barCount -= laps;
  }

}

4 Answers

Geocarlos Alves
Geocarlos Alves
13,969 Points

Maybe you should add the exception variable?

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(100);
  System.out.println("this will not happen");
}catch (IllegalArgumentException iae){
  System.out.println("Whoaa there");
  System.out.println("the error was " + iae);

}

} }

Shirit Dori
Shirit Dori
791 Points

Thank you Geocarlos Alves but it is still not working....

Anders Björkland
Anders Björkland
7,481 Points

OK, so this one is a bit funky, but listen. There are two things you need to do. The first one: change kart.drive(100) to kart.drive(42). That was the exercise's initial state, apparently very fond of the number 42 for some reason. The second thing: on System.out.println("the error was "); add iae.getMessage().

Good luck, Shirit!

Shirit Dori
Shirit Dori
791 Points

Thank you Anders. Finally the problem was the println.It should be printf. Thanks a lot.