Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

Matt George
Matt George
2,507 Points
Posted by Matt George
Matt George
2,507 Points

The code in Main.java is going to throw an IllegalArgumentException when the drive method is called. Catch it and warn t

The code in Main.java is going to throw an IllegalArgumentException when the drive method is called. Catch it and warn the user.

Someone help me out on this:

Main.java 
public class Main {
    public static void main(String[] args) {
        GoKart kart = new GoKart("yellow");
        if (kart.isBatteryEmpty()) {
          System.out.println("The battery is empty");
        }

      try{
        kart.drive(2);
        System.out.println("Vroom!!! Vroom!!!");
      }
      catch(IllegalArgumentException iae) {
        System.out.println("Woah there!");
        System.out.print("The error was:  %s\n", iae.getMessage);
      }
    }
}
micram1001
micram1001
33,833 Points

final line in catch should be System.out.printf("The error was: %s\n", iae.getMessage());

1 Answer

Dan Johnson
Dan Johnson
40,533 Points
Dan Johnson
Dan Johnson
40,533 Points

Just two small things:

  • getMessage is a method so you'll need the parentheses to call it.

  • Since you're using a format string you'll want printf instead of print.