class ExceptionTest {
    public static void main(String[] args) {
        
        double resultat = 0;
        try {
            resultat = del(10, 0);
        } catch (DelPaaNullException e) {
            System.out.println(e);
        }
        System.out.println(resultat);
    }

    public static double del(
        double teller, 
        double nevner
    ) throws DelPaaNullException {

        if (nevner == 0) {
            throw new DelPaaNullException(teller, nevner);
        }

        return teller/nevner;
    }
}