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

Noelle Acheson
Noelle Acheson
610 Points
Posted by Noelle Acheson
Noelle Acheson
610 Points

I'm told I didn't catch the exception? Not sure what I'm doing wrong...

I'm following the format given in the lecture (I think?), but I'm not catching the exception.

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(40);
      }
      catch (IllegalArgumentException iae) {
          System.out.println("Too many laps");
      }
        kart.drive(2);
    }
}

3 Answers

Victor Learned
Victor Learned
6,976 Points
Victor Learned
Victor Learned
6,976 Points

So when you use a try catch statement you want all the code that could throw an exception that you specifically want to handle in your catch to be within the try.

In the text of the challenge it states that the drive method will throw an exception and thus all calls to the drive method need to be within your try. In you code you have one that is not. Either remove it or move it into the Try.

    public static void main(String[] args) {
        GoKart kart = new GoKart("yellow");
        if (kart.isBatteryEmpty()) {
          System.out.println("The battery is empty");
        }
      try {
          kart.drive(40);
          kart.drive(2); //not sure you need it but if you do place here.
      }
      catch (IllegalArgumentException iae) {
          System.out.println("Too many laps");
      }
    }
Noelle Acheson
Noelle Acheson
610 Points
Noelle Acheson
Noelle Acheson
610 Points

Thanks so much! It helped! I got it!

Allan Clark
Allan Clark
10,810 Points
Allan Clark
Allan Clark
10,810 Points

You have an extra line in there. kart.drive(2); that was given as boiler plate code. Your try/catch syntax i perfect, just have an uncaught exception after it.

Noelle Acheson
Noelle Acheson
610 Points
Noelle Acheson
Noelle Acheson
610 Points

Thank you Allan! You were right, the kart.drive(2) wasn't necessary...

Youngchul Kim
Youngchul Kim
4,258 Points
Youngchul Kim
Youngchul Kim
4,258 Points

This challenge seems to force you to use %s for the IllegalArgumentException variable. So in your case, you may need to further modify the print statement as follow (after revising your code as others mentioned above): 

System.out.println("Too many laps %s", iae);