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

Stephen Tauro
Stephen Tauro
4,111 Points
Posted by Stephen Tauro
Stephen Tauro
4,111 Points

Please help me find the mistake I have committed and explain about my mistake along with the correct answer.

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);
    }
}

2 Answers

Richard Duffy
Richard Duffy
16,488 Points

Hey Stephen,

Here is the correct code.

public class Main {
    public static void main(String[] args) {
        GoKart kart = new GoKart("yellow");
      try {
        if (kart.isBatteryEmpty()) {
          System.out.println("The battery is empty");
        }
        kart.drive(2);
      } catch (IllegalArgumentException ioe) {
        System.out.println(ioe);
      }
    }
}

What you needed to do was to surround it with a try-catch block, a try catch block will try to see if it can compute what is in the try part and if it can it works, if it does not then it throws the error which is caught by the catch block, you can customise the catch message.

Hope this helps.

Happy coding!

Regards,

Richard.