public static LabelValueChoiceRenderer<Long> getDatumChoiceRenderer(final int lastNDays) { final LabelValueChoiceRenderer<Long> datumChoiceRenderer = new LabelValueChoiceRenderer<Long>(); for (int i = 0; i > -lastNDays; i--) { final DayHolder day = new DayHolder(); day.add(Calendar.DAY_OF_YEAR, i); datumChoiceRenderer.addValue( day.getSQLDate().getTime(), DateTimeFormatter.instance() .getFormattedDate( day.getSQLDate(), DateFormats.getFormatString(DateFormatType.DATE))); } return datumChoiceRenderer; }