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

Andrea Kim
Andrea Kim
653 Points
Posted by Andrea Kim
Andrea Kim
653 Points

Preview (Output) gives me no info on my error. Challenge Task 1 of 1

Challenge Task 1 of 1

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

I am not seeing the problem with my code. There is no error shown in my output, but it tells me "Bummer!..."

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);
       } catch (IllegalArgumentException iae) {
       System.out.println("Not enough  battery.");
       }
    }
}
Andrea Kim
Andrea Kim
653 Points
Andrea Kim
Andrea Kim
653 Points

Bummer! Please print out the exception's message to the console using the System.out object.

...but nothing on the Preview pane / Output.html area.

2 Answers

srikarvedantam
srikarvedantam
8,369 Points

Well, you are printing your own message "Not enough battery.", rather than "exception message" (can be retrieved via "iae.getMessage()" call) as stated in the exercise. Try the following:

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);
        }
        catch(IllegalArgumentException iae){
          System.out.println(iae.getMessage());
        }
    }
}