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

help! been stuck

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

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);
    }
}
King Chang
King Chang
Courses Plus Student 5,403 Points

Do you have GoKart.java , Please put it. Thanks. Because this code is not any problem.

2 Answers

Gavin Ralston
Gavin Ralston
28,770 Points

The code in Main.java is going to throw an IllegalArgumentException when the drive method is called.

Catch it and warn the user.

:)

public class Main {
    public static void main(String[] args) {
        GoKart kart = new GoKart("yellow");
        if (kart.isBatteryEmpty()) {
          System.out.println("The battery is empty");
        }
        // wrap this up in a try/catch 
        try {
            kart.drive(2);
        } catch(IllegalArgumentException iae) {
             // warn the user.  In this case he wants the string from .getMessage()
        }
    }
}

Let me know if that helps.

Mustafa Akkoc
Mustafa Akkoc
1,252 Points

It seems like a defensive measure to complain about obviously bad input before the input can get into the works and cause something to fail halfway through with a nonsensical error message.