DB.selectSQL("SELECT fldWeekNumber from tblExercise");
        weekNumber = Integer.parseInt(DB.getData());

        while(true) {

            DB.selectSQL("SELECT fldExerciseHours from tblExercise where fldWeekNumber = " + weekNumber);
            exerciseHours = Double.parseDouble(DB.getData());
            System.out.println(exerciseHours);
            statistics.add(new Statistics(weekNumber, exerciseHours));

            DB.selectSQL("SELECT fldWeekNumber from tblExercise where fldWeekNumber = " + (weekNumber + 1));
            String weekNumberString = DB.getData();

            if(weekNumberString.equals(DB.NOMOREDATA)) {
                break;
            } else {
                weekNumber = Integer.parseInt(weekNumberString);
                System.out.println(weekNumber);
            }