public void fillBookings() {
		List<Booking> bookings = bookingService.getStudentBookingsByDate(
				student, this.calendar.getCalendar());
		DefaultTableModel modelTB = (DefaultTableModel) bookingsTable
				.getModel();

		if (modelTB.getRowCount() > 0) {
			for (int i = modelTB.getRowCount() - 1; i > -1; i--) {
				modelTB.removeRow(i);
			}
		}

		for (Booking booking : bookings) {
			Calendar date = booking.getDate();
			String dateS = sdf.format(date.getTime());
			Object[] data = { dateS, booking.getDiningHall().toString(),
					booking };
			modelTB.addRow(data);
		}
		if (bookings.size() == 0)
			btnDeleteBooking.setEnabled(false);
		else
			btnDeleteBooking.setEnabled(true);
	}