final Date date = toDate(str, format);
            if (date != null) {
                return date;
            }
        }
        final Date date = toDate(str, locale);
        if (date != null) {
            return date;
        }
        final java.sql.Date sqlDate = toSqlDateJdbcEscape(str);
        if (sqlDate != null) {

        final Date date = toDate("10/9/7");
        assertThat(new SimpleDateFormat("yyyy/MM/dd").format(date), is("2010/09/07"));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testToDate_MediumStyle() throws Exception {
        final Date date = toDate("2010/9/7");
        assertThat(new SimpleDateFormat("yyyy/MM/dd").format(date), is("2010/09/07"));
    }

    /**

     *
     * @param value the date string to parse
     * @return parsed Date object, or null if parsing fails
     */
    public static Date parseDate(final String value) {
        return parseDate(value, Constants.DATE_OPTIONAL_TIME);
    }

    /**
     * Parses a date string using the specified format.
     *
     * @param value the date string to parse

    }

    /**
     * @throws Exception
     */
    @Test
    public void testToCalendar() throws Exception {
        final Date date = new Date();
        final Calendar cal = CalendarConversionUtil.toCalendar(date);
        assertEquals(date, cal.getTime());
    }

    /**
     *
     * @throws Exception
     */
    @Test
    public void testLocalize() throws Exception {

   * either the field is absent or cannot be parsed as a date.
   */
  fun getDate(name: String): Date? = get(name)?.toHttpDateOrNull()

  /**
   * Returns the last value corresponding to the specified field parsed as an HTTP date, or null if
   * either the field is absent or cannot be parsed as a date.
   */

            final Date date = toDate(str, format);
            if (date != null) {
                return new Timestamp(date.getTime());
            }
        }
        final Date date = toDate(str, locale);
        if (date != null) {
            return new Timestamp(date.getTime());
        }
        final Timestamp timestamp = toSqlTimestampJdbcEscape(str);

            final SimpleDateFormat format = new SimpleDateFormat(pattern, locale);
            final Date date = toDate(str, format);
            if (date != null) {
                return new Time(date.getTime());
            }
        }
        final Date date = toDate(str, locale);
        if (date != null) {
            return new Time(date.getTime());
        }
        final Time time = toSqlTimeJdbcEscape(str);

  }

  /**
   * @param delta the offset from the current date to use. Negative values yield dates in the past;
   *     positive values yield dates in the future.
   */
  private fun formatDate(
    delta: Long,
    timeUnit: TimeUnit,
  ): String? = formatDate(Date(System.currentTimeMillis() + timeUnit.toMillis(delta)))

  private fun formatDate(date: Date): String? {

    protected String toRangeDateString(Date date, String format) {
        if (format.contains("epoch_millis")) {
            return Long.toString(date.getTime());
        } else if (format.contains("date_optional_time")) {
            final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
            sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
            return sdf.format(date);
        } else {

  }

  @Test fun expiresDate() {
    assertThat(Date(parse(url, "a=b; Expires=Thu, 01 Jan 1970 00:00:00 GMT")!!.expiresAt))
      .isEqualTo(date("1970-01-01T00:00:00.000+0000"))
    assertThat(Date(parse(url, "a=b; Expires=Wed, 09 Jun 2021 10:18:14 GMT")!!.expiresAt))
      .isEqualTo(date("2021-06-09T10:18:14.000+0000"))
    assertThat(Date(parse(url, "a=b; Expires=Sun, 06 Nov 1994 08:49:37 GMT")!!.expiresAt))