javax.mail.internet
类 MailDateFormat

java.lang.Object
  java.text.Format
      java.text.DateFormat
          java.text.SimpleDateFormat
              javax.mail.internet.MailDateFormat

所有已实现的接口：

Serializable, Cloneable

public class MailDateFormat
extends SimpleDateFormat

Formats and parses date specification based on the draft-ietf-drums-msg-fmt-08 dated January 26, 2000. This is a followup spec to RFC822.

This class does not take pattern strings. It always formats the date based on the specification below.

3.3 Date and Time Specification

Date and time occur in several header fields of a message. This section specifies the syntax for a full date and time specification. Though folding whitespace is permitted throughout the date-time specification, it is recommended that only a single space be used where FWS is required and no space be used where FWS is optional in the date-time specification; some older implementations may not interpret other occurrences of folding whitespace correctly.

date-time = [ day-of-week "," ] date FWS time [CFWS]

day-of-week = ([FWS] day-name) / obs-day-of-week

day-name = "Mon" / "Tue" / "Wed" / "Thu" / "Fri" / "Sat" / "Sun"

date = day month year

year = 4*DIGIT / obs-year

month = (FWS month-name FWS) / obs-month

month-name = "Jan" / "Feb" / "Mar" / "Apr" /
             "May" / "Jun" / "Jul" / "Aug" /
             "Sep" / "Oct" / "Nov" / "Dec"
 

day = ([FWS] 1*2DIGIT) / obs-day

time = time-of-day FWS zone

time-of-day = hour ":" minute [ ":" second ]

hour = 2DIGIT / obs-hour

minute = 2DIGIT / obs-minute

second = 2DIGIT / obs-second

zone = (( "+" / "-" ) 4DIGIT) / obs-zone

The day is the numeric day of the month. The year is any numeric year in the common era.

The time-of-day specifies the number of hours, minutes, and optionally seconds since midnight of the date indicated.

The date and time-of-day SHOULD express local time.

The zone specifies the offset from Coordinated Universal Time (UTC, formerly referred to as "Greenwich Mean Time") that the date and time-of-day represent. The "+" or "-" indicates whether the time-of-day is ahead of or behind Universal Time. The first two digits indicate the number of hours difference from Universal Time, and the last two digits indicate the number of minutes difference from Universal Time. (Hence, +hhmm means +(hh * 60 + mm) minutes, and -hhmm means -(hh * 60 + mm) minutes). The form "+0000" SHOULD be used to indicate a time zone at Universal Time. Though "-0000" also indicates Universal Time, it is used to indicate that the time was generated on a system that may be in a local time zone other than Universal Time.

A date-time specification MUST be semantically valid. That is, the day-of-the week (if included) MUST be the day implied by the date, the numeric day-of-month MUST be between 1 and the number of days allowed for the specified month (in the specified year), the time-of-day MUST be in the range 00:00:00 through 23:59:60 (the number of seconds allowing for a leap second; see [STD-12]), and the zone MUST be within the range -9959 through +9959.

从以下版本开始：

JavaMail 1.2

作者：

Max Spivak

另请参见：

序列化表格

嵌套类摘要

从类 java.text.DateFormat 继承的嵌套类/接口

DateFormat.Field

字段摘要

从类 java.text.DateFormat 继承的字段

AM_PM_FIELD, calendar, DATE_FIELD, DAY_OF_WEEK_FIELD, DAY_OF_WEEK_IN_MONTH_FIELD, DAY_OF_YEAR_FIELD, DEFAULT, ERA_FIELD, FULL, HOUR_OF_DAY0_FIELD, HOUR_OF_DAY1_FIELD, HOUR0_FIELD, HOUR1_FIELD, LONG, MEDIUM, MILLISECOND_FIELD, MINUTE_FIELD, MONTH_FIELD, numberFormat, SECOND_FIELD, SHORT, TIMEZONE_FIELD, WEEK_OF_MONTH_FIELD, WEEK_OF_YEAR_FIELD, YEAR_FIELD

构造方法摘要

MailDateFormat()

方法摘要

StringBuffer	format(Date date, StringBuffer dateStrBuf, FieldPosition fieldPosition) Formats the given date in the format specified by draft-ietf-drums-msg-fmt-08 in the current TimeZone.
Date	parse(String text, ParsePosition pos) Parses the given date in the format specified by draft-ietf-drums-msg-fmt-08 in the current TimeZone.
void	setCalendar(Calendar newCalendar) Don't allow setting the calendar
void	setNumberFormat(NumberFormat newNumberFormat) Don't allow setting the NumberFormat

从类 java.text.SimpleDateFormat 继承的方法

applyLocalizedPattern, applyPattern, clone, equals, formatToCharacterIterator, get2DigitYearStart, getDateFormatSymbols, hashCode, set2DigitYearStart, setDateFormatSymbols, toLocalizedPattern, toPattern

从类 java.text.DateFormat 继承的方法

format, format, getAvailableLocales, getCalendar, getDateInstance, getDateInstance, getDateInstance, getDateTimeInstance, getDateTimeInstance, getDateTimeInstance, getInstance, getNumberFormat, getTimeInstance, getTimeInstance, getTimeInstance, getTimeZone, isLenient, parse, parseObject, setLenient, setTimeZone

从类 java.text.Format 继承的方法

format, parseObject

从类 java.lang.Object 继承的方法

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

构造方法详细信息

MailDateFormat

public MailDateFormat()

方法详细信息

format

public StringBuffer format(Date date,
                           StringBuffer dateStrBuf,
                           FieldPosition fieldPosition)

Formats the given date in the format specified by draft-ietf-drums-msg-fmt-08 in the current TimeZone.

覆盖：

类 SimpleDateFormat 中的 format

参数：

date - the Date object

dateStrBuf - the formatted string

fieldPosition - the current field position

返回：

StringBuffer the formatted String

从以下版本开始：

JavaMail 1.2

parse

public Date parse(String text,
                  ParsePosition pos)

Parses the given date in the format specified by draft-ietf-drums-msg-fmt-08 in the current TimeZone.

覆盖：

类 SimpleDateFormat 中的 parse

参数：

text - the formatted date to be parsed

pos - the current parse position

返回：

Date the parsed date in a Date object

从以下版本开始：

JavaMail 1.2

setCalendar

public void setCalendar(Calendar newCalendar)

Don't allow setting the calendar

覆盖：

类 DateFormat 中的 setCalendar

setNumberFormat

public void setNumberFormat(NumberFormat newNumberFormat)

Don't allow setting the NumberFormat

覆盖：

类 DateFormat 中的 setNumberFormat