public boolean modifyStudent(String originNo, Student now) {
		String select = "SELECT * FROM STUDENT WHERE NO=?";
		try {
			PreparedStatement ps = conn
					.prepareStatement(select, ResultSet.TYPE_SCROLL_SENSITIVE,
							ResultSet.CONCUR_UPDATABLE);
			ps.setString(1, originNo);
			ResultSet rs = ps.executeQuery();

			rs.first();
			rs.updateString("NO", now.no);
			rs.updateString("NAME", now.name);
			rs.updateString("SEX", now.sex);
			rs.updateDate("BIRTHDAY", now.birthday);
			rs.updateString("ADDRESS", now.address);
			rs.updateString("TEL", now.tel);
			rs.updateString("EMAIL", now.email);
			rs.updateRow();

			ps.close();
		} catch (SQLException e) {
			e.printStackTrace();
			return false;
		}
		return true;
	}