Confused with Try Catch

Question

Here is the prompt:

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

My code should be attached.

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");
        }
        kart.drive(2);
    }
}

Answer 1 · 2016-09-23T02:48:42Z

September 23, 2016 2:48am

The point of the try catch is to prevent the exception from causing the application to quit unexpectedly. I don't want to just give the answer because I think it is important to be able to solve these challenges, so I will try my best to explain it.

What you should be looking to do is to try to catch the IllegalArgumentException which could potentially be thrown by the call to the kart.drive method. I sometimes think of it this way:

I want to try to do something which might say "hey, that is not ok." And ends my application.
So to prevent my application from ending, I catch the unexpected behavior and note the message to something like System.out.

I hope this helps, but in the case that it doesn't, I would rematch the video. Happy coding.

Welcome to the Treehouse Community

Looking to learn something new?

Marcus Schumacher

Marcus Schumacher

Confused with Try Catch

1 Answer

Daniel Vigil

Daniel Vigil