}
}
private void fillDayCells(CourseSchedule courseSchedule) {
for (Day day : courseSchedule.getDayList()) {
Period dayStartPeriod = day.getPeriodList().get(0);
Period dayEndPeriod = day.getPeriodList().get(day.getPeriodList().size() - 1);
roomsPanel.addRowHeader(HEADER_COLUMN_GROUP1, dayStartPeriod, HEADER_COLUMN_GROUP1, dayEndPeriod,
createHeaderPanel(new JLabel(day.getLabel())));
teachersPanel.addRowHeader(HEADER_COLUMN_GROUP1, dayStartPeriod, HEADER_COLUMN_GROUP1, dayEndPeriod,
createHeaderPanel(new JLabel(day.getLabel())));
curriculaPanel.addRowHeader(HEADER_COLUMN_GROUP1, dayStartPeriod, HEADER_COLUMN_GROUP1, dayEndPeriod,