public void addNewCourse(JTextField courseName, String courseStart, String courseEnd, JComboBox teacher, JComboBox subject) {
        try {
            //Name of the new course
            String course = courseName.getText();
            //new Id for the course
            ArrayList<String> count = new ArrayList<String>();
            String getNewId = "SELECT kursnamn FROM kurs";
            count = hwdb.fetchColumn(getNewId);
            int newId = count.size() + 1;
            //Fetch teacher ID
            String tempTeacher = teacher.getSelectedItem().toString();
            String[] splitStr = tempTeacher.split("\\s+");
            String iD = getIdTeacher(splitStr[0], splitStr[1]);
            //get subject Id for course
            String courseSubject = subject.getSelectedItem().toString();
            String subjectId = getSubjectId(courseSubject);
            //The actual command to insert new course
            String command = "INSERT INTO kurs VALUES (" + newId + ", '" + course + "', '" + courseStart + "', '" + courseEnd + "', " + iD + ", " + subjectId + ")";
            hwdb.insert(command);
        } catch (InfException e) {
            System.out.println(e.getMessage());
        }
    }