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Java

Posted by Theodor Fahami
Theodor Fahami
1,034 Points

IllegalArgumentException, printing error to console?

I was tasked to catch a IllegalArgumentException, now they me want me to print the error to the console.

This is my code, i added the println & printf at the bottom be i still get: Bummer! Please print out the exception's message to the console using the System.out object

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(20); } catch (IllegalArgumentException iae) { System.out.println("A error occurred!"); System.out.printf("The error was: &s\n", iae.getMessage()); } } }

Why does my code no work?

markmneimneh
markmneimneh
14,132 Points

I believe the main issue is that you are using &s instead of %s

But even then, it seems the code won't print an error because the exception is not getting thrown. Here is a sample I put together to throw and exception. The pasting may not be perfect.

class GoKart { private String color; public String getColor() { return color; }

public void setColor(String color) {
    this.color = color;
}

public GoKart(String color) {
    this.color = color;
}

public void drive(int speed) {
    if(speed < 10) {
        System.out.println("going " + speed + " miles per hours");
    }else {
        throw new IllegalArgumentException("An error occurred!");
    }

}

public boolean isBatteryEmpty() {
   return true;
}

} public class test { public static void main(String[] args) { GoKart kart = new GoKart("yellow"); if (kart.isBatteryEmpty()) { System.out.println("The battery is empty"); } try { kart.drive(20); } catch (IllegalArgumentException iae) { System.out.println("A error occurred!"); System.out.printf("The error was: %s\n", iae.getMessage()); } } }

hope this helps