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Java

Devin Scheu
Devin Scheu
66,191 Points
Posted by Devin Scheu
Devin Scheu
66,191 Points

Another Java Code Question

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

Code:

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(100);
        } catch (IllegalArgumentException iae) {
           System.out.println("Alert");
           System.out.printf("There was an error: %s\n", iae.getMessage());
        }
        kart.drive(2);
    }
}
Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

I recategorized your question as Java, not Javascript

2 Answers

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

the original code is:

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);
    }
}

the drive method should only be called once. remove kart.drive(2) from the end of your code. 

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(100);
        } catch (IllegalArgumentException iae) {
           System.out.println("Alert");
           System.out.printf("There was an error: %s\n", iae.getMessage());
        }

    }
}
Devin Scheu
Devin Scheu
66,191 Points
Devin Scheu
Devin Scheu
66,191 Points

Thanks again Stone, sorry for the trouble.

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

no worries. was not any trouble at all

SZE SZE XU
SZE SZE XU
9,759 Points
SZE SZE XU
SZE SZE XU
9,759 Points

hi whats iae mean in this case and whats println ?

Jeff Collins
Jeff Collins
24,709 Points
Jeff Collins
Jeff Collins
24,709 Points

Craig explains what iae is at around 3:55 in the exceptions video. It's an abbreviation for Illegal Argument Exception.