Hata Java

//Method to add score to a student dorm
    public void addScoreByOne(String studentDorm) {
        try {
            String question = "UPDATE elevhem SET huspoang = huspoang +1 WHERE elevhemsnamn='" + studentDorm + "'";
            hwdb.update(question);

        } catch (InfException e) {
            System.out.println("Felmeddelande" + e.getMessage());
        }
    }

    //Method to remove score from student dorm
    public void removeScoreByOne(String studentDorm) {
        try {
            String question = "UPDATE elevhem SET huspoang = huspoang -1 WHERE elevhemsnamn='" + studentDorm + "'";
            hwdb.update(question);

        } catch (InfException e) {
            System.out.println("Felmeddelande" + e.getMessage());
        }
    }