public class SimpleDateFormat extends DateFormat
java.text.SimpleDateFormat. Methods, fields, and other functionality specific to ICU are labeled '[icu]'.
SimpleDateFormat is a concrete class for formatting and
parsing dates in a locale-sensitive manner. It allows for formatting
(date -> text), parsing (text -> date), and normalization.
Clients are encouraged to create a date-time formatter using
DateFormat.getDateInstance(), DateFormat.getDateInstance(),
or DateFormat.getDateTimeInstance() rather than
explicitly constructing an instance of SimpleDateFormat. This way, the client
is guaranteed to get an appropriate formatting pattern for whatever locale the
program is running in. If the client needs more control, they should consider using
DateFormat.getInstanceForSkeleton().
However, if the client needs something more unusual than
the default patterns in the locales, he can construct a SimpleDateFormat directly
and give it an appropriate pattern (or use one of the factory methods on DateFormat
and modify the pattern after the fact with toPattern() and applyPattern().
For more information on using these methods, see
DateFormat.
Date and Time Patterns:
Date and time formats are specified by date and time pattern strings. The full syntax for date and time patterns can be found at https://unicode.org/reports/tr35/tr35-dates.html#Date_Format_Patterns.
Within date and time pattern strings, all unquoted ASCII letters [A-Za-z] are reserved as pattern letters representing calendar fields. Some of the most commonly used pattern letters are:
Sym. No. Example Description G 1..3 AD Era - Replaced with the Era string for the current date. One to three letters for the abbreviated form, four letters for the long (wide) form, five for the narrow form. y 1..n 1996 Year. Normally the length specifies the padding, but for two letters it also specifies the maximum length. Example:
Year y yy yyy yyyy yyyyy AD 1 1 01 001 0001 00001 AD 12 12 12 012 0012 00012 AD 123 123 23 123 0123 00123 AD 1234 1234 34 1234 1234 01234 AD 12345 12345 45 12345 12345 12345 Q 1..2 02 Quarter - Use one or two for the numerical quarter, three for the abbreviation, or four for the full (wide) name (five for the narrow name is not yet supported). 3 Q2 4 2nd quarter M 1..2 09 Month - Use one or two for the numerical month, three for the abbreviation, four for the full (wide) name, or five for the narrow name. With two ("MM"), the month number is zero-padded if necessary (e.g. "08"). 3 Sep 4 September 5 S d 1..2 1 Date - Day of the month. Use "d" to show the minimum number of digits, or "dd" to always show two digits (zero-padding if necessary, e.g. "08"). E 1..3 Tue Day of week - Use one through three letters for the short day, four for the full (wide) name, five for the narrow name, or six for the short name. 4 Tuesday 5 T 6 Tu a 1 AM AM or PM h 1..2 11 Hour [1-12]. When used in skeleton data or in a skeleton passed in an API for flexible data pattern generation, it should match the 12-hour-cycle format preferred by the locale (h or K); it should not match a 24-hour-cycle format (H or k). Use hh for zero padding. H 1..2 13 Hour [0-23]. When used in skeleton data or in a skeleton passed in an API for flexible data pattern generation, it should match the 24-hour-cycle format preferred by the locale (H or k); it should not match a 12-hour-cycle format (h or K). Use HH for zero padding. m 1..2 59 Minute. Use "m" to show the minimum number of digits, or "mm" to always show two digits (zero-padding if necessary, e.g. "08").. s 1..2 12 Second. Use "s" to show the minimum number of digits, or "ss" to always show two digits (zero-padding if necessary, e.g. "08"). z 1..3 PDT Time zone. The short specific non-location format. Where that is unavailable, falls back to the short localized GMT format ("O"). 4 Pacific Daylight Time The long specific non-location format. Where that is unavailable, falls back to the long localized GMT format ("OOOO"). v 1 PT Time zone. The short generic non-location format. Where that is unavailable, falls back to the generic location format ("VVVV"), then the short localized GMT format as the final fallback. 4 Pacific Time The long generic non-location format. Where that is unavailable, falls back to generic location format ("VVVV").
Any characters in the pattern that are not in the ranges of ['a'..'z'] and ['A'..'Z'] will be treated as quoted text. For instance, characters like ':', '.', ' ', '#' and '@' will appear in the resulting time text even they are not embraced within single quotes.
A pattern containing any invalid pattern letter will result in a thrown exception during formatting or parsing.
Examples Using the US Locale:
Code Sample:Format Pattern Result -------------- ------- "yyyy.MM.dd G 'at' HH:mm:ss vvvv" ->> 1996.07.10 AD at 15:08:56 Pacific Time "EEE, MMM d, ''yy" ->> Wed, July 10, '96 "h:mm a" ->> 12:08 PM "hh 'o''clock' a, zzzz" ->> 12 o'clock PM, Pacific Daylight Time "K:mm a, vvv" ->> 0:00 PM, PT "yyyyy.MMMMM.dd GGG hh:mm aaa" ->> 01996.July.10 AD 12:08 PM
In the example, the time valueSimpleTimeZone pdt = new SimpleTimeZone(-8 * 60 * 60 * 1000, "PST"); pdt.setStartRule(Calendar.APRIL, 1, Calendar.SUNDAY, 2*60*60*1000); pdt.setEndRule(Calendar.OCTOBER, -1, Calendar.SUNDAY, 2*60*60*1000);
// Format the current time. SimpleDateFormat formatter = new SimpleDateFormat ("yyyy.MM.dd G 'at' hh:mm:ss a zzz"); Date currentTime_1 = new Date(); String dateString = formatter.format(currentTime_1);
// Parse the previous string back into a Date. ParsePosition pos = new ParsePosition(0); Date currentTime_2 = formatter.parse(dateString, pos);
currentTime_2 obtained from
parsing will be equal to currentTime_1. However, they may not be
equal if the am/pm marker 'a' is left out from the format pattern while
the "hour in am/pm" pattern symbol is used. This information loss can
happen when formatting the time in PM.
When parsing a date string using the abbreviated year pattern ("yy"),
SimpleDateFormat must interpret the abbreviated year
relative to some century. It does this by adjusting dates to be
within 80 years before and 20 years after the time the SimpleDateFormat
instance is created. For example, using a pattern of "MM/dd/yy" and a
SimpleDateFormat instance created on Jan 1, 1997, the string
"01/11/12" would be interpreted as Jan 11, 2012 while the string "05/04/64"
would be interpreted as May 4, 1964.
During parsing, only strings consisting of exactly two digits, as defined by
UCharacter.isDigit(int), will be parsed into the default
century.
Any other numeric string, such as a one digit string, a three or more digit
string, or a two digit string that isn't all digits (for example, "-1"), is
interpreted literally. So "01/02/3" or "01/02/003" are parsed, using the
same pattern, as Jan 2, 3 AD. Likewise, "01/02/-3" is parsed as Jan 2, 4 BC.
If the year pattern does not have exactly two 'y' characters, the year is interpreted literally, regardless of the number of digits. So using the pattern "MM/dd/yyyy", "01/11/12" parses to Jan 11, 12 A.D.
When numeric fields abut one another directly, with no intervening delimiter characters, they constitute a run of abutting numeric fields. Such runs are parsed specially. For example, the format "HHmmss" parses the input text "123456" to 12:34:56, parses the input text "12345" to 1:23:45, and fails to parse "1234". In other words, the leftmost field of the run is flexible, while the others keep a fixed width. If the parse fails anywhere in the run, then the leftmost field is shortened by one character, and the entire run is parsed again. This is repeated until either the parse succeeds or the leftmost field is one character in length. If the parse still fails at that point, the parse of the run fails.
For time zones that have no names, use strings GMT+hours:minutes or GMT-hours:minutes.
The calendar defines what is the first day of the week, the first week of the year, whether hours are zero based or not (0 vs 12 or 24), and the time zone. There is one common decimal format to handle all the numbers; the digit count is handled programmatically according to the pattern.
Calendar,
GregorianCalendar,
TimeZone,
DateFormat,
DateFormatSymbols,
DecimalFormat,
TimeZoneFormat,
Serialized FormDateFormat.BooleanAttribute, DateFormat.Field, DateFormat.HourCycleUFormat.SpanFieldABBR_GENERIC_TZ, ABBR_MONTH, ABBR_MONTH_DAY, ABBR_MONTH_WEEKDAY_DAY, ABBR_QUARTER, ABBR_SPECIFIC_TZ, ABBR_STANDALONE_MONTH, ABBR_UTC_TZ, ABBR_WEEKDAY, AM_PM_FIELD, AM_PM_MIDNIGHT_NOON_FIELD, calendar, DATE_FIELD, DATE_SKELETONS, DAY, DAY_OF_WEEK_FIELD, DAY_OF_WEEK_IN_MONTH_FIELD, DAY_OF_YEAR_FIELD, DEFAULT, DOW_LOCAL_FIELD, ERA_FIELD, EXTENDED_YEAR_FIELD, FIELD_COUNT, FLEXIBLE_DAY_PERIOD_FIELD, FRACTIONAL_SECOND_FIELD, FULL, GENERIC_TZ, HOUR, HOUR_GENERIC_TZ, HOUR_MINUTE, HOUR_MINUTE_GENERIC_TZ, HOUR_MINUTE_SECOND, HOUR_MINUTE_TZ, HOUR_OF_DAY0_FIELD, HOUR_OF_DAY1_FIELD, HOUR_TZ, HOUR0_FIELD, HOUR1_FIELD, HOUR24, HOUR24_MINUTE, HOUR24_MINUTE_SECOND, JP_ERA_2019_JA, JP_ERA_2019_NARROW, JP_ERA_2019_ROOT, JULIAN_DAY_FIELD, LOCATION_TZ, LONG, MEDIUM, MILLISECOND_FIELD, MILLISECONDS_IN_DAY_FIELD, MINUTE, MINUTE_FIELD, MINUTE_SECOND, MONTH, MONTH_DAY, MONTH_FIELD, MONTH_WEEKDAY_DAY, NONE, NUM_MONTH, NUM_MONTH_DAY, NUM_MONTH_WEEKDAY_DAY, numberFormat, QUARTER, QUARTER_FIELD, RELATIVE, RELATIVE_DEFAULT, RELATIVE_FULL, RELATIVE_LONG, RELATIVE_MEDIUM, RELATIVE_SHORT, SECOND, SECOND_FIELD, SHORT, SPECIFIC_TZ, STANDALONE_DAY_FIELD, STANDALONE_MONTH, STANDALONE_MONTH_FIELD, STANDALONE_QUARTER_FIELD, TIME_SEPARATOR, TIME_SKELETONS, TIMEZONE_FIELD, TIMEZONE_GENERIC_FIELD, TIMEZONE_ISO_FIELD, TIMEZONE_ISO_LOCAL_FIELD, TIMEZONE_LOCALIZED_GMT_OFFSET_FIELD, TIMEZONE_RFC_FIELD, TIMEZONE_SPECIAL_FIELD, WEEK_OF_MONTH_FIELD, WEEK_OF_YEAR_FIELD, WEEKDAY, YEAR, YEAR_ABBR_MONTH, YEAR_ABBR_MONTH_DAY, YEAR_ABBR_MONTH_WEEKDAY_DAY, YEAR_ABBR_QUARTER, YEAR_FIELD, YEAR_MONTH, YEAR_MONTH_DAY, YEAR_MONTH_WEEKDAY_DAY, YEAR_NAME_FIELD, YEAR_NUM_MONTH, YEAR_NUM_MONTH_DAY, YEAR_NUM_MONTH_WEEKDAY_DAY, YEAR_QUARTER, YEAR_WOY_FIELD, ZONE_SKELETONS| Constructor and Description |
|---|
SimpleDateFormat()
Constructs a SimpleDateFormat using the default pattern for the default
FORMAT
locale. |
SimpleDateFormat(String pattern)
Constructs a SimpleDateFormat using the given pattern in the default
FORMAT
locale. |
SimpleDateFormat(String pattern,
DateFormatSymbols formatData)
Constructs a SimpleDateFormat using the given pattern and
locale-specific symbol data.
|
SimpleDateFormat(String pattern,
DateFormatSymbols formatData,
ULocale loc)
Deprecated.
This API is ICU internal only.
|
SimpleDateFormat(String pattern,
Locale loc)
Constructs a SimpleDateFormat using the given pattern and locale.
|
SimpleDateFormat(String pattern,
String override,
ULocale loc)
Constructs a SimpleDateFormat using the given pattern , override and locale.
|
SimpleDateFormat(String pattern,
ULocale loc)
Constructs a SimpleDateFormat using the given pattern and locale.
|
| Modifier and Type | Method and Description |
|---|---|
void |
applyLocalizedPattern(String pat)
Apply the given localized pattern string to this date format.
|
void |
applyPattern(String pat)
Apply the given unlocalized pattern string to this date format.
|
Object |
clone()
Overrides Cloneable
|
boolean |
equals(Object obj)
Override equals.
|
StringBuffer |
format(Calendar cal,
StringBuffer toAppendTo,
FieldPosition pos)
Formats a date or time, which is the standard millis
since January 1, 1970, 00:00:00 GMT.
|
AttributedCharacterIterator |
formatToCharacterIterator(Object obj)
Format the object to an attributed string, and return the corresponding iterator
Overrides superclass method.
|
Date |
get2DigitYearStart()
Returns the beginning date of the 100-year period 2-digit years are interpreted
as being within.
|
DateFormatSymbols |
getDateFormatSymbols()
Gets the date/time formatting data.
|
static SimpleDateFormat |
getInstance(Calendar.FormatConfiguration formatConfig)
Deprecated.
This API is ICU internal only.
|
NumberFormat |
getNumberFormat(char field)
give the NumberFormat used for the field like 'y'(year) and 'M'(year)
|
protected DateFormatSymbols |
getSymbols()
Method for subclasses to access the DateFormatSymbols.
|
TimeZoneFormat |
getTimeZoneFormat()
[icu] Gets the time zone formatter which this date/time
formatter uses to format and parse a time zone.
|
int |
hashCode()
Override hashCode.
|
StringBuffer |
intervalFormatByAlgorithm(Calendar fromCalendar,
Calendar toCalendar,
StringBuffer appendTo,
FieldPosition pos)
Deprecated.
This API is ICU internal only.
|
protected int |
matchQuarterString(String text,
int start,
int field,
String[] data,
Calendar cal)
Attempt to match the text at a given position against an array of quarter
strings.
|
protected int |
matchString(String text,
int start,
int field,
String[] data,
Calendar cal)
Attempt to match the text at a given position against an array of
strings.
|
void |
parse(String text,
Calendar cal,
ParsePosition parsePos)
Overrides DateFormat
|
protected DateFormat.Field |
patternCharToDateFormatField(char ch)
Returns a DateFormat.Field constant associated with the specified format pattern
character.
|
void |
set2DigitYearStart(Date startDate)
Sets the 100-year period 2-digit years will be interpreted as being in
to begin on the date the user specifies.
|
void |
setContext(DisplayContext context)
[icu] Set a particular DisplayContext value in the formatter,
such as CAPITALIZATION_FOR_STANDALONE.
|
void |
setDateFormatSymbols(DateFormatSymbols newFormatSymbols)
Allows you to set the date/time formatting data.
|
void |
setNumberFormat(NumberFormat newNumberFormat)
Overrides superclass method and
This method also clears per field NumberFormat instances
previously set by
setNumberFormat(String, NumberFormat) |
void |
setNumberFormat(String fields,
NumberFormat overrideNF)
allow the user to set the NumberFormat for several fields
It can be a single field like: "y"(year) or "M"(month)
It can be several field combined together: "yMd"(year, month and date)
Note:
1 symbol field is enough for multiple symbol fields (so "y" will override "yy", "yyy")
If the field is not numeric, then override has no effect (like "MMM" will use abbreviation, not numerical field)
|
void |
setTimeZoneFormat(TimeZoneFormat tzfmt)
[icu] Allows you to set the time zone formatter.
|
protected String |
subFormat(char ch,
int count,
int beginOffset,
FieldPosition pos,
DateFormatSymbols fmtData,
Calendar cal)
Formats a single field, given its pattern character.
|
protected String |
subFormat(char ch,
int count,
int beginOffset,
int fieldNum,
DisplayContext capitalizationContext,
FieldPosition pos,
char patternCharToOutput,
Calendar cal)
Deprecated.
This API is ICU internal only.
|
protected void |
subFormat(StringBuffer buf,
char ch,
int count,
int beginOffset,
int fieldNum,
DisplayContext capitalizationContext,
FieldPosition pos,
char patternCharToOutput,
Calendar cal)
Deprecated.
This API is ICU internal only.
|
protected int |
subParse(String text,
int start,
char ch,
int count,
boolean obeyCount,
boolean allowNegative,
boolean[] ambiguousYear,
Calendar cal)
Protected method that converts one field of the input string into a
numeric field value in
cal. |
String |
toLocalizedPattern()
Return a localized pattern string describing this date format.
|
String |
toPattern()
Return a pattern string describing this date format.
|
protected String |
zeroPaddingNumber(long value,
int minDigits,
int maxDigits)
Formats a number with the specified minimum and maximum number of digits.
|
protected void |
zeroPaddingNumber(NumberFormat nf,
StringBuffer buf,
int value,
int minDigits,
int maxDigits)
Deprecated.
This API is ICU internal only.
|
format, format, format, format, format, getAvailableLocales, getAvailableULocales, getBooleanAttribute, getCalendar, getContext, getDateInstance, getDateInstance, getDateInstance, getDateInstance, getDateInstance, getDateInstance, getDateInstance, getDateTimeInstance, getDateTimeInstance, getDateTimeInstance, getDateTimeInstance, getDateTimeInstance, getDateTimeInstance, getDateTimeInstance, getInstance, getInstance, getInstance, getInstance, getInstanceForSkeleton, getInstanceForSkeleton, getInstanceForSkeleton, getInstanceForSkeleton, getInstanceForSkeleton, getNumberFormat, getPatternInstance, getPatternInstance, getPatternInstance, getPatternInstance, getPatternInstance, getTimeInstance, getTimeInstance, getTimeInstance, getTimeInstance, getTimeInstance, getTimeInstance, getTimeInstance, getTimeZone, isCalendarLenient, isLenient, parse, parse, parseObject, setBooleanAttribute, setCalendar, setCalendarLenient, setLenient, setTimeZoneformat, parseObjectpublic SimpleDateFormat()
FORMAT
locale. Note: Not all locales support SimpleDateFormat; for full
generality, use the factory methods in the DateFormat class.DateFormat,
ULocale.Category.FORMATpublic SimpleDateFormat(String pattern)
FORMAT
locale. Note: Not all locales support SimpleDateFormat; for full
generality, use the factory methods in the DateFormat class.ULocale.Category.FORMATpublic SimpleDateFormat(String pattern, Locale loc)
public SimpleDateFormat(String pattern, ULocale loc)
public SimpleDateFormat(String pattern, String override, ULocale loc)
pattern - The pattern to be usedoverride - The override string. A numbering system override string can take one of the following forms:
1). If just a numbering system name is specified, it applies to all numeric fields in the date format pattern.
2). To specify an alternate numbering system on a field by field basis, use the field letters from the pattern
followed by an = sign, followed by the numbering system name. For example, to specify that just the year
be formatted using Hebrew digits, use the override "y=hebr". Multiple overrides can be specified in a single
string by separating them with a semi-colon. For example, the override string "m=thai;y=deva" would format using
Thai digits for the month and Devanagari digits for the year.loc - The locale to be usedpublic SimpleDateFormat(String pattern, DateFormatSymbols formatData)
FORMAT locale for digits!@Deprecated public SimpleDateFormat(String pattern, DateFormatSymbols formatData, ULocale loc)
@Deprecated public static SimpleDateFormat getInstance(Calendar.FormatConfiguration formatConfig)
formatConfig - the format configurationpublic void set2DigitYearStart(Date startDate)
startDate - During parsing, two digit years will be placed in the range
startDate to startDate + 100 years.public Date get2DigitYearStart()
public void setContext(DisplayContext context)
setContext in class DateFormatcontext - The DisplayContext value to set.public StringBuffer format(Calendar cal, StringBuffer toAppendTo, FieldPosition pos)
Example: using the US locale: "yyyy.MM.dd G 'at' HH:mm:ss zzz" ->> 1996.07.10 AD at 15:08:56 PDT
format in class DateFormatcal - the calendar whose date-time value is to be formatted into a date-time stringtoAppendTo - where the new date-time text is to be appendedpos - the formatting position. On input: an alignment field,
if desired. On output: the offsets of the alignment field.DateFormatprotected DateFormat.Field patternCharToDateFormatField(char ch)
ch - The pattern characterprotected String subFormat(char ch, int count, int beginOffset, FieldPosition pos, DateFormatSymbols fmtData, Calendar cal) throws IllegalArgumentException
ch - the pattern charactercount - the number of times ch is repeated in the patternbeginOffset - the offset of the output string at the start of
this field; used to set pos when appropriatepos - receives the position of a field, when appropriatefmtData - the symbols for this formatterIllegalArgumentException@Deprecated protected String subFormat(char ch, int count, int beginOffset, int fieldNum, DisplayContext capitalizationContext, FieldPosition pos, char patternCharToOutput, Calendar cal)
@Deprecated protected void subFormat(StringBuffer buf, char ch, int count, int beginOffset, int fieldNum, DisplayContext capitalizationContext, FieldPosition pos, char patternCharToOutput, Calendar cal)
@Deprecated protected void zeroPaddingNumber(NumberFormat nf, StringBuffer buf, int value, int minDigits, int maxDigits)
public void setNumberFormat(NumberFormat newNumberFormat)
setNumberFormat(String, NumberFormat)setNumberFormat in class DateFormatnewNumberFormat - the given new NumberFormat.protected String zeroPaddingNumber(long value, int minDigits, int maxDigits)
public void parse(String text, Calendar cal, ParsePosition parsePos)
parse in class DateFormattext - The date/time string to be parsedcal - The calendar set on input to the date and time to be used
for missing values in the date/time string being parsed,
and set on output to the parsed date/time. In general, this
should be initialized before calling this method - either
cleared or set to the current date, depending on desired
behavior. If this parse fails, the calendar may still
have been modified. When the calendar type is different
from the internal calendar held by this DateFormat
instance, calendar field values will be parsed based
on the internal calendar initialized with the time and
the time zone taken from this calendar, then the
parse result (time in milliseconds and time zone) will
be set back to this calendar.parsePos - On input, the position at which to start parsing; on
output, the position at which parsing terminated, or the
start position if the parse failed.DateFormatprotected int matchString(String text, int start, int field, String[] data, Calendar cal)
cal is set to the index
of the best match, if there is one.text - the time text being parsed.start - where to start parsing.field - the date field being parsed.data - the string array to parsed.cal - cal field field to the index
of the best match, if matching succeeded.protected int matchQuarterString(String text, int start, int field, String[] data, Calendar cal)
cal is set to the index
of the best match, if there is one.text - the time text being parsed.start - where to start parsing.field - the date field being parsed.data - the string array to parsed.cal field field to the index
of the best match, if matching succeeded.protected int subParse(String text, int start, char ch, int count, boolean obeyCount, boolean allowNegative, boolean[] ambiguousYear, Calendar cal)
cal. Returns -start (for
ParsePosition) if failed. Subclasses may override this method to
modify or add parsing capabilities.text - the time text to be parsed.start - where to start parsing.ch - the pattern character for the date field text to be parsed.count - the count of a pattern character.obeyCount - if true, then the next field directly abuts this one,
and we should use the count to know when to stop parsing.ambiguousYear - return parameter; upon return, if ambiguousYear[0]
is true, then a two-digit year was parsed and may need to be readjusted.cal - cal with the parsed
value.public String toPattern()
public String toLocalizedPattern()
Note: This implementation depends on DateFormatSymbols.getLocalPatternChars()
to get localized format pattern characters. ICU does not include
localized pattern character data, therefore, unless user sets localized
pattern characters manually, this method returns the same result as
toPattern().
public void applyPattern(String pat)
public void applyLocalizedPattern(String pat)
public DateFormatSymbols getDateFormatSymbols()
public void setDateFormatSymbols(DateFormatSymbols newFormatSymbols)
newFormatSymbols - the new symbolsprotected DateFormatSymbols getSymbols()
public TimeZoneFormat getTimeZoneFormat()
public void setTimeZoneFormat(TimeZoneFormat tzfmt)
tzfmt - the new time zone formatterpublic Object clone()
clone in class DateFormatpublic int hashCode()
hashCode in class DateFormatpublic boolean equals(Object obj)
equals in class DateFormatpublic AttributedCharacterIterator formatToCharacterIterator(Object obj)
formatToCharacterIterator in class Formatobj - The object to formatAttributedCharacterIterator describing the formatted value.@Deprecated public final StringBuffer intervalFormatByAlgorithm(Calendar fromCalendar, Calendar toCalendar, StringBuffer appendTo, FieldPosition pos) throws IllegalArgumentException
fromCalendar - calendar set to the from date in date interval
to be formatted into date interval stringtoCalendar - calendar set to the to date in date interval
to be formatted into date interval stringappendTo - Output parameter to receive result.
Result is appended to existing contents.pos - On input: an alignment field, if desired.
On output: the offsets of the alignment field.IllegalArgumentException - when there is non-recognized
pattern letterpublic void setNumberFormat(String fields, NumberFormat overrideNF)
fields - the fields to overrideoverrideNF - the NumbeferFormat usedIllegalArgumentException - when the fields contain invalid fieldpublic NumberFormat getNumberFormat(char field)
field - the field the user wantsCopyright © 2016 Unicode, Inc. and others.