Class SimpleDateFormat
- java.lang.Object
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- java.text.Format
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- com.ibm.icu.text.UFormat
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- com.ibm.icu.text.DateFormat
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- com.ibm.icu.text.SimpleDateFormat
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Cloneable
- Direct Known Subclasses:
ChineseDateFormat
public class SimpleDateFormat extends DateFormat
.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()
, orDateFormat.getDateTimeInstance()
rather than explicitly constructing an instance ofSimpleDateFormat
. 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 usingDateFormat.getInstanceForSkeleton()
. However, if the client needs something more unusual than the default patterns in the locales, he can construct aSimpleDateFormat
directly and give it an appropriate pattern (or use one of the factory methods on DateFormat and modify the pattern after the fact withtoPattern()
andapplyPattern()
. For more information on using these methods, seeDateFormat
.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:
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
SimpleTimeZone 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 tocurrentTime_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.
Synchronization
Date formats are not synchronized. It is recommended to create separate format instances for each thread. If multiple threads access a format concurrently, it must be synchronized externally.
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Nested Class Summary
Nested Classes Modifier and Type Class Description private static class
SimpleDateFormat.ContextValue
Old ContextValue enum, preserved only to avoid deserialization errs from ICU 49.1.private static class
SimpleDateFormat.PatternItem
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Nested classes/interfaces inherited from class com.ibm.icu.text.DateFormat
DateFormat.BooleanAttribute, DateFormat.Field, DateFormat.HourCycle
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Nested classes/interfaces inherited from class com.ibm.icu.text.UFormat
UFormat.SpanField
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Field Summary
Fields Modifier and Type Field Description private static ULocale
cachedDefaultLocale
private static java.lang.String
cachedDefaultPattern
private static int[]
CALENDAR_FIELD_TO_LEVEL
private BreakIterator
capitalizationBrkIter
BreakIterator to use for capitalization (will be cloned for actual use)(package private) static int
currentSerialVersion
(package private) static UnicodeSet
DATE_PATTERN_TYPE
private char[]
decDigits
private static int
DECIMAL_BUF_SIZE
private char[]
decimalBuf
private long
defaultCenturyBase
private java.util.Date
defaultCenturyStart
We map dates with two-digit years into the century starting atdefaultCenturyStart
, which may be any date.private int
defaultCenturyStartYear
(package private) static boolean
DelayedHebrewMonthCheck
private static java.lang.String
FALLBACKPATTERN
private DateFormatSymbols
formatData
The symbols used by this formatter for week names, month names, etc.private boolean
hasHanYearChar
DateFormat pattern contains the Han year character 年=年, => non-numeric E Asian format.private boolean
hasMinute
DateFormat pattern contains the minute field.private boolean
hasSecond
DateFormat pattern contains the second field.private static int
HEBREW_CAL_CUR_MILLENIUM_END_YEAR
private static int
HEBREW_CAL_CUR_MILLENIUM_START_YEAR
private static int
ISOSpecialEra
private ULocale
locale
private static long
MAX_DAYLIGHT_DETECTION_RANGE
Maximum range for detecting daylight offset of a time zone when parsed time zone string indicates it's daylight saving time, but the detected time zone does not observe daylight saving time at the parsed date.private static int
millisPerHour
private java.util.HashMap<java.lang.String,NumberFormat>
numberFormatters
The hash map used for number format overrides.private static java.lang.String
NUMERIC_FORMAT_CHARS
Format characters that indicate numeric fields always.private static java.lang.String
NUMERIC_FORMAT_CHARS2
Format characters that indicate numeric fields when pattern length is up to 2.private java.lang.String
override
The override string of this formatter.private java.util.HashMap<java.lang.Character,java.lang.String>
overrideMap
The hash map used for number format overrides.private static ICUCache<java.lang.String,java.lang.Object[]>
PARSED_PATTERN_CACHE
private java.lang.String
pattern
The pattern string of this formatter.private static boolean[]
PATTERN_CHAR_IS_SYNTAX
private static int[]
PATTERN_CHAR_TO_INDEX
private static int[]
PATTERN_CHAR_TO_LEVEL
private static int[]
PATTERN_INDEX_TO_CALENDAR_FIELD
private static DateFormat.Field[]
PATTERN_INDEX_TO_DATE_FORMAT_ATTRIBUTE
private static int[]
PATTERN_INDEX_TO_DATE_FORMAT_FIELD
private java.lang.Object[]
patternItems
private int
serialVersionOnStream
The version of the serialized data on the stream.private static long
serialVersionUID
private static java.lang.String
SUPPRESS_NEGATIVE_PREFIX
private TimeZoneFormat
tzFormat
private boolean
useFastFormat
If true, this object supports fast formatting using the subFormat variant that takes a StringBuffer.private boolean
useLocalZeroPaddingNumberFormat
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Fields inherited from class com.ibm.icu.text.DateFormat
ABBR_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, RELATED_YEAR, 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
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Constructor Summary
Constructors Modifier Constructor Description SimpleDateFormat()
Constructs a SimpleDateFormat using the default pattern for the defaultFORMAT
locale.SimpleDateFormat(java.lang.String pattern)
Constructs a SimpleDateFormat using the given pattern in the defaultFORMAT
locale.SimpleDateFormat(java.lang.String pattern, DateFormatSymbols formatData)
Constructs a SimpleDateFormat using the given pattern and locale-specific symbol data.private
SimpleDateFormat(java.lang.String pattern, DateFormatSymbols formatData, Calendar calendar, NumberFormat numberFormat, ULocale locale, boolean useFastFormat, java.lang.String override)
(package private)
SimpleDateFormat(java.lang.String pattern, DateFormatSymbols formatData, Calendar calendar, ULocale locale, boolean useFastFormat, java.lang.String override)
Package-private constructor that allows a subclass to specify whether it supports fast formatting.SimpleDateFormat(java.lang.String pattern, DateFormatSymbols formatData, ULocale loc)
Deprecated.This API is ICU internal only.SimpleDateFormat(java.lang.String pattern, ULocale loc)
Constructs a SimpleDateFormat using the given pattern and locale.SimpleDateFormat(java.lang.String pattern, java.lang.String override, ULocale loc)
Constructs a SimpleDateFormat using the given pattern , override and locale.SimpleDateFormat(java.lang.String pattern, java.util.Locale loc)
Constructs a SimpleDateFormat using the given pattern and locale.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description private boolean
allowNumericFallback(int patternCharIndex)
return true if the pattern specified by patternCharIndex is one that allows numeric fallback regardless of actual pattern size.void
applyLocalizedPattern(java.lang.String pat)
Apply the given localized pattern string to this date format.void
applyPattern(java.lang.String pat)
Apply the given unlocalized pattern string to this date format.java.lang.Object
clone()
Overrides Cloneableprivate static int
countDigits(java.lang.String text, int start, int end)
Counts number of digit code points in the specified text.private boolean
diffCalFieldValue(Calendar fromCalendar, Calendar toCalendar, java.lang.Object[] items, int i)
check whether the i-th item in 2 calendar is in different value.boolean
equals(java.lang.Object obj)
Override equals.private void
fastZeroPaddingNumber(java.lang.StringBuffer buf, int value, int minDigits, int maxDigits)
private java.lang.StringBuffer
format(Calendar cal, DisplayContext capitalizationContext, java.lang.StringBuffer toAppendTo, java.text.FieldPosition pos, java.util.List<java.text.FieldPosition> attributes)
java.lang.StringBuffer
format(Calendar cal, java.lang.StringBuffer toAppendTo, java.text.FieldPosition pos)
Formats a date or time, which is the standard millis since January 1, 1970, 00:00:00 GMT.(package private) java.lang.StringBuffer
format(Calendar cal, java.lang.StringBuffer toAppendTo, java.text.FieldPosition pos, java.util.List<java.text.FieldPosition> attributes)
Internal formatting method that accepts an attributes list.java.text.AttributedCharacterIterator
formatToCharacterIterator(java.lang.Object obj)
Format the object to an attributed string, and return the corresponding iterator Overrides superclass method.java.util.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.private java.util.Date
getDefaultCenturyStart()
private int
getDefaultCenturyStartYear()
private static java.lang.String
getDefaultPattern()
private static int
getIndexFromChar(char ch)
static SimpleDateFormat
getInstance(Calendar.FormatConfiguration formatConfig)
Deprecated.This API is ICU internal only.private static int
getLevelFromChar(char ch)
Map calendar field letter into calendar field level.(package private) ULocale
getLocale()
Get the locale of this simple date formatter.NumberFormat
getNumberFormat(char field)
give the NumberFormat used for the field like 'y'(year) and 'M'(year)private java.lang.Object[]
getPatternItems()
protected DateFormatSymbols
getSymbols()
Method for subclasses to access the DateFormatSymbols.TimeZoneFormat
getTimeZoneFormat()
Gets the time zone formatter which this date/time formatter uses to format and parse a time zone.int
hashCode()
Override hashCode.private void
initialize()
private void
initializeDefaultCenturyStart(long baseTime)
private void
initializeTimeZoneFormat(boolean bForceUpdate)
Private method lazily instantiate the TimeZoneFormat fieldprivate void
initLocalZeroPaddingNumberFormat()
private void
initNumberFormatters(ULocale loc)
java.lang.StringBuffer
intervalFormatByAlgorithm(Calendar fromCalendar, Calendar toCalendar, java.lang.StringBuffer appendTo, java.text.FieldPosition pos)
Deprecated.This API is ICU internal only.(package private) boolean
isFieldUnitIgnored(int field)
Check whether the 'field' is smaller than all the fields covered in pattern, return true if it is.(package private) static boolean
isFieldUnitIgnored(java.lang.String pattern, int field)
private static boolean
isNumeric(char formatChar, int count)
Return true if the given format character, occurring count times, represents a numeric field.private static boolean
isSyntaxChar(char ch)
Tell if a character can be used to define a field in a format string.private boolean
lowerLevel(java.lang.Object[] items, int i, int level)
check whether the i-th item's level is lower than the input 'level' It is supposed to be used only by CLDR survey tool.private int
matchAlphaMonthStrings(java.lang.String text, int start, java.lang.String[] wideData, java.lang.String[] shortData, Calendar cal)
Deprecated.This API is ICU internal only.private int
matchDayPeriodString(java.lang.String text, int start, java.lang.String[] data, int dataLength, Output<DayPeriodRules.DayPeriod> dayPeriod)
Similar to matchQuarterString but customized for day periods.private int
matchLiteral(java.lang.String text, int pos, java.lang.Object[] items, int itemIndex, boolean[] complete)
Matches text (starting at pos) with patl.protected int
matchQuarterString(java.lang.String text, int start, int field, java.lang.String[] data, Calendar cal)
Attempt to match the text at a given position against an array of quarter strings.protected int
matchString(java.lang.String text, int start, int field, java.lang.String[] data, Calendar cal)
Attempt to match the text at a given position against an array of strings.private int
matchString(java.lang.String text, int start, int field, java.lang.String[] data, java.lang.String monthPattern, Calendar cal)
Deprecated.This API is ICU internal only.void
parse(java.lang.String text, Calendar cal, java.text.ParsePosition parsePos)
Overrides DateFormatprivate void
parseAmbiguousDatesAsAfter(java.util.Date startDate)
private java.lang.Number
parseInt(java.lang.String text, int maxDigits, java.text.ParsePosition pos, boolean allowNegative, NumberFormat fmt)
Parse an integer using numberFormat up to maxDigits.private java.lang.Number
parseInt(java.lang.String text, java.text.ParsePosition pos, boolean allowNegative, NumberFormat fmt)
Parse an integer using numberFormat.private void
parsePattern()
protected DateFormat.Field
patternCharToDateFormatField(char ch)
Returns a DateFormat.Field constant associated with the specified format pattern character.private void
processOverrideString(ULocale loc, java.lang.String str)
private void
readObject(java.io.ObjectInputStream stream)
Override readObject.private int
regionMatchesWithOptionalDot(java.lang.String text, int start, java.lang.String data, int length)
private static void
safeAppend(java.lang.String[] array, int value, java.lang.StringBuffer appendTo)
private static void
safeAppendWithMonthPattern(java.lang.String[] array, int value, java.lang.StringBuffer appendTo, java.lang.String monthPattern)
void
set2DigitYearStart(java.util.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)
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 bysetNumberFormat(String, NumberFormat)
void
setNumberFormat(java.lang.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)
Allows you to set the time zone formatter.protected java.lang.String
subFormat(char ch, int count, int beginOffset, int fieldNum, DisplayContext capitalizationContext, java.text.FieldPosition pos, char patternCharToOutput, Calendar cal)
Deprecated.This API is ICU internal only.protected java.lang.String
subFormat(char ch, int count, int beginOffset, java.text.FieldPosition pos, DateFormatSymbols fmtData, Calendar cal)
Formats a single field, given its pattern character.protected void
subFormat(java.lang.StringBuffer buf, char ch, int count, int beginOffset, int fieldNum, DisplayContext capitalizationContext, java.text.FieldPosition pos, char patternCharToOutput, Calendar cal)
Deprecated.This API is ICU internal only.protected int
subParse(java.lang.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 incal
.private int
subParse(java.lang.String text, int start, char ch, int count, boolean obeyCount, boolean allowNegative, boolean[] ambiguousYear, Calendar cal, MessageFormat numericLeapMonthFormatter, Output<TimeZoneFormat.TimeType> tzTimeType)
Overloading to provide default argument (null) for day period.private int
subParse(java.lang.String text, int start, char ch, int count, boolean obeyCount, boolean allowNegative, boolean[] ambiguousYear, Calendar cal, MessageFormat numericLeapMonthFormatter, Output<TimeZoneFormat.TimeType> tzTimeType, Output<DayPeriodRules.DayPeriod> dayPeriod)
Deprecated.This API is ICU internal only.java.lang.String
toLocalizedPattern()
Return a localized pattern string describing this date format.java.lang.String
toPattern()
Return a pattern string describing this date format.private java.lang.String
translatePattern(java.lang.String pat, java.lang.String from, java.lang.String to)
Translate a pattern, mapping each character in the from string to the corresponding character in the to string.private TimeZoneFormat
tzFormat()
Private method, returns non-null TimeZoneFormat.private void
writeObject(java.io.ObjectOutputStream stream)
Override writeObject.protected java.lang.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, java.lang.StringBuffer buf, int value, int minDigits, int maxDigits)
Deprecated.This API is ICU internal only.-
Methods inherited from class com.ibm.icu.text.DateFormat
fixNumberFormatForDates, 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, setTimeZone
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Field Detail
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serialVersionUID
private static final long serialVersionUID
- See Also:
- Constant Field Values
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currentSerialVersion
static final int currentSerialVersion
- See Also:
- Constant Field Values
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DelayedHebrewMonthCheck
static boolean DelayedHebrewMonthCheck
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CALENDAR_FIELD_TO_LEVEL
private static final int[] CALENDAR_FIELD_TO_LEVEL
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PATTERN_CHAR_TO_LEVEL
private static final int[] PATTERN_CHAR_TO_LEVEL
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PATTERN_CHAR_IS_SYNTAX
private static final boolean[] PATTERN_CHAR_IS_SYNTAX
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HEBREW_CAL_CUR_MILLENIUM_START_YEAR
private static final int HEBREW_CAL_CUR_MILLENIUM_START_YEAR
- See Also:
- Constant Field Values
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HEBREW_CAL_CUR_MILLENIUM_END_YEAR
private static final int HEBREW_CAL_CUR_MILLENIUM_END_YEAR
- See Also:
- Constant Field Values
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serialVersionOnStream
private int serialVersionOnStream
The version of the serialized data on the stream. Possible values:- 0 or not present on stream: JDK 1.1.3. This version
has no
defaultCenturyStart
on stream. - 1 JDK 1.1.4 or later. This version adds
defaultCenturyStart
. - 2 This version writes an additional int for
capitalizationSetting
.
serialVersionOnStream
is written. - 0 or not present on stream: JDK 1.1.3. This version
has no
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pattern
private java.lang.String pattern
The pattern string of this formatter. This is always a non-localized pattern. May not be null. See class documentation for details.
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override
private java.lang.String override
The override string of this formatter. Used to override the numbering system for one or more fields.
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numberFormatters
private java.util.HashMap<java.lang.String,NumberFormat> numberFormatters
The hash map used for number format overrides.
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overrideMap
private java.util.HashMap<java.lang.Character,java.lang.String> overrideMap
The hash map used for number format overrides.
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formatData
private DateFormatSymbols formatData
The symbols used by this formatter for week names, month names, etc. May not be null.- See Also:
DateFormatSymbols
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locale
private transient ULocale locale
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defaultCenturyStart
private java.util.Date defaultCenturyStart
We map dates with two-digit years into the century starting atdefaultCenturyStart
, which may be any date. May not be null.- Since:
- JDK1.1.4
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defaultCenturyStartYear
private transient int defaultCenturyStartYear
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defaultCenturyBase
private transient long defaultCenturyBase
-
millisPerHour
private static final int millisPerHour
- See Also:
- Constant Field Values
-
ISOSpecialEra
private static final int ISOSpecialEra
- See Also:
- Constant Field Values
-
SUPPRESS_NEGATIVE_PREFIX
private static final java.lang.String SUPPRESS_NEGATIVE_PREFIX
- See Also:
- Constant Field Values
-
useFastFormat
private transient boolean useFastFormat
If true, this object supports fast formatting using the subFormat variant that takes a StringBuffer.
-
tzFormat
private volatile TimeZoneFormat tzFormat
-
capitalizationBrkIter
private transient BreakIterator capitalizationBrkIter
BreakIterator to use for capitalization (will be cloned for actual use)
-
hasMinute
private transient boolean hasMinute
DateFormat pattern contains the minute field.
-
hasSecond
private transient boolean hasSecond
DateFormat pattern contains the second field.
-
hasHanYearChar
private transient boolean hasHanYearChar
DateFormat pattern contains the Han year character 年=年, => non-numeric E Asian format.
-
cachedDefaultLocale
private static ULocale cachedDefaultLocale
-
cachedDefaultPattern
private static java.lang.String cachedDefaultPattern
-
FALLBACKPATTERN
private static final java.lang.String FALLBACKPATTERN
- See Also:
- Constant Field Values
-
PATTERN_CHAR_TO_INDEX
private static final int[] PATTERN_CHAR_TO_INDEX
-
PATTERN_INDEX_TO_CALENDAR_FIELD
private static final int[] PATTERN_INDEX_TO_CALENDAR_FIELD
-
PATTERN_INDEX_TO_DATE_FORMAT_FIELD
private static final int[] PATTERN_INDEX_TO_DATE_FORMAT_FIELD
-
PATTERN_INDEX_TO_DATE_FORMAT_ATTRIBUTE
private static final DateFormat.Field[] PATTERN_INDEX_TO_DATE_FORMAT_ATTRIBUTE
-
PARSED_PATTERN_CACHE
private static ICUCache<java.lang.String,java.lang.Object[]> PARSED_PATTERN_CACHE
-
patternItems
private transient java.lang.Object[] patternItems
-
useLocalZeroPaddingNumberFormat
private transient boolean useLocalZeroPaddingNumberFormat
-
decDigits
private transient char[] decDigits
-
decimalBuf
private transient char[] decimalBuf
-
DECIMAL_BUF_SIZE
private static final int DECIMAL_BUF_SIZE
- See Also:
- Constant Field Values
-
NUMERIC_FORMAT_CHARS
private static final java.lang.String NUMERIC_FORMAT_CHARS
Format characters that indicate numeric fields always.- See Also:
- Constant Field Values
-
NUMERIC_FORMAT_CHARS2
private static final java.lang.String NUMERIC_FORMAT_CHARS2
Format characters that indicate numeric fields when pattern length is up to 2.- See Also:
- Constant Field Values
-
MAX_DAYLIGHT_DETECTION_RANGE
private static final long MAX_DAYLIGHT_DETECTION_RANGE
Maximum range for detecting daylight offset of a time zone when parsed time zone string indicates it's daylight saving time, but the detected time zone does not observe daylight saving time at the parsed date.- See Also:
- Constant Field Values
-
DATE_PATTERN_TYPE
static final UnicodeSet DATE_PATTERN_TYPE
-
-
Constructor Detail
-
SimpleDateFormat
public SimpleDateFormat()
Constructs a SimpleDateFormat using the default pattern for the defaultFORMAT
locale. Note: Not all locales support SimpleDateFormat; for full generality, use the factory methods in the DateFormat class.- See Also:
DateFormat
,ULocale.Category.FORMAT
-
SimpleDateFormat
public SimpleDateFormat(java.lang.String pattern)
Constructs a SimpleDateFormat using the given pattern in the defaultFORMAT
locale. Note: Not all locales support SimpleDateFormat; for full generality, use the factory methods in the DateFormat class.- See Also:
ULocale.Category.FORMAT
-
SimpleDateFormat
public SimpleDateFormat(java.lang.String pattern, java.util.Locale loc)
Constructs a SimpleDateFormat using the given pattern and locale. Note: Not all locales support SimpleDateFormat; for full generality, use the factory methods in the DateFormat class.
-
SimpleDateFormat
public SimpleDateFormat(java.lang.String pattern, ULocale loc)
Constructs a SimpleDateFormat using the given pattern and locale. Note: Not all locales support SimpleDateFormat; for full generality, use the factory methods in the DateFormat class.
-
SimpleDateFormat
public SimpleDateFormat(java.lang.String pattern, java.lang.String override, ULocale loc)
Constructs a SimpleDateFormat using the given pattern , override and locale.- Parameters:
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 used
-
SimpleDateFormat
public SimpleDateFormat(java.lang.String pattern, DateFormatSymbols formatData)
Constructs a SimpleDateFormat using the given pattern and locale-specific symbol data. Warning: uses defaultFORMAT
locale for digits!
-
SimpleDateFormat
@Deprecated public SimpleDateFormat(java.lang.String pattern, DateFormatSymbols formatData, ULocale loc)
Deprecated.This API is ICU internal only.
-
SimpleDateFormat
SimpleDateFormat(java.lang.String pattern, DateFormatSymbols formatData, Calendar calendar, ULocale locale, boolean useFastFormat, java.lang.String override)
Package-private constructor that allows a subclass to specify whether it supports fast formatting. TODO make this API public.
-
SimpleDateFormat
private SimpleDateFormat(java.lang.String pattern, DateFormatSymbols formatData, Calendar calendar, NumberFormat numberFormat, ULocale locale, boolean useFastFormat, java.lang.String override)
-
-
Method Detail
-
getLevelFromChar
private static int getLevelFromChar(char ch)
Map calendar field letter into calendar field level.
-
isSyntaxChar
private static boolean isSyntaxChar(char ch)
Tell if a character can be used to define a field in a format string.
-
getInstance
@Deprecated public static SimpleDateFormat getInstance(Calendar.FormatConfiguration formatConfig)
Deprecated.This API is ICU internal only.Creates an instance of SimpleDateFormat for the given format configuration- Parameters:
formatConfig
- the format configuration- Returns:
- A SimpleDateFormat instance
-
initialize
private void initialize()
-
initializeTimeZoneFormat
private void initializeTimeZoneFormat(boolean bForceUpdate)
Private method lazily instantiate the TimeZoneFormat field- Parameters:
bForceUpdate
- when true, check if tzFormat is synchronized with the current numberFormat and update its digits if necessary. When false, this check is skipped.
-
tzFormat
private TimeZoneFormat tzFormat()
Private method, returns non-null TimeZoneFormat.- Returns:
- the TimeZoneFormat used by this formatter.
-
getDefaultPattern
private static java.lang.String getDefaultPattern()
-
parseAmbiguousDatesAsAfter
private void parseAmbiguousDatesAsAfter(java.util.Date startDate)
-
initializeDefaultCenturyStart
private void initializeDefaultCenturyStart(long baseTime)
-
getDefaultCenturyStart
private java.util.Date getDefaultCenturyStart()
-
getDefaultCenturyStartYear
private int getDefaultCenturyStartYear()
-
set2DigitYearStart
public void set2DigitYearStart(java.util.Date startDate)
Sets the 100-year period 2-digit years will be interpreted as being in to begin on the date the user specifies.- Parameters:
startDate
- During parsing, two digit years will be placed in the rangestartDate
tostartDate + 100 years
.
-
get2DigitYearStart
public java.util.Date get2DigitYearStart()
Returns the beginning date of the 100-year period 2-digit years are interpreted as being within.- Returns:
- the start of the 100-year period into which two digit years are parsed
-
setContext
public void setContext(DisplayContext context)
Set a particular DisplayContext value in the formatter, such as CAPITALIZATION_FOR_STANDALONE. Note: For getContext, see DateFormat.- Overrides:
setContext
in classDateFormat
- Parameters:
context
- The DisplayContext value to set.
-
format
public java.lang.StringBuffer format(Calendar cal, java.lang.StringBuffer toAppendTo, java.text.FieldPosition pos)
Formats a date or time, which is the standard millis since January 1, 1970, 00:00:00 GMT.Example: using the US locale: "yyyy.MM.dd G 'at' HH:mm:ss zzz" ->> 1996.07.10 AD at 15:08:56 PDT
- Specified by:
format
in classDateFormat
- Parameters:
cal
- 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.- Returns:
- the formatted date-time string.
- See Also:
DateFormat
-
format
java.lang.StringBuffer format(Calendar cal, java.lang.StringBuffer toAppendTo, java.text.FieldPosition pos, java.util.List<java.text.FieldPosition> attributes)
Internal formatting method that accepts an attributes list.
-
format
private java.lang.StringBuffer format(Calendar cal, DisplayContext capitalizationContext, java.lang.StringBuffer toAppendTo, java.text.FieldPosition pos, java.util.List<java.text.FieldPosition> attributes)
-
getIndexFromChar
private static int getIndexFromChar(char ch)
-
patternCharToDateFormatField
protected DateFormat.Field patternCharToDateFormatField(char ch)
Returns a DateFormat.Field constant associated with the specified format pattern character.- Parameters:
ch
- The pattern character- Returns:
- DateFormat.Field associated with the pattern character
-
subFormat
protected java.lang.String subFormat(char ch, int count, int beginOffset, java.text.FieldPosition pos, DateFormatSymbols fmtData, Calendar cal) throws java.lang.IllegalArgumentException
Formats a single field, given its pattern character. Subclasses may override this method in order to modify or add formatting capabilities.- Parameters:
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 formatter- Throws:
java.lang.IllegalArgumentException
-
subFormat
@Deprecated protected java.lang.String subFormat(char ch, int count, int beginOffset, int fieldNum, DisplayContext capitalizationContext, java.text.FieldPosition pos, char patternCharToOutput, Calendar cal)
Deprecated.This API is ICU internal only.Formats a single field. This is the version called internally; it adds fieldNum and capitalizationContext parameters.
-
subFormat
@Deprecated protected void subFormat(java.lang.StringBuffer buf, char ch, int count, int beginOffset, int fieldNum, DisplayContext capitalizationContext, java.text.FieldPosition pos, char patternCharToOutput, Calendar cal)
Deprecated.This API is ICU internal only.Formats a single field; useFastFormat variant. Reuses a StringBuffer for results instead of creating a String on the heap for each call. NOTE We don't really need the beginOffset parameter, EXCEPT for the need to support the slow subFormat variant (above) which has to pass it in to us.
-
safeAppend
private static void safeAppend(java.lang.String[] array, int value, java.lang.StringBuffer appendTo)
-
safeAppendWithMonthPattern
private static void safeAppendWithMonthPattern(java.lang.String[] array, int value, java.lang.StringBuffer appendTo, java.lang.String monthPattern)
-
getPatternItems
private java.lang.Object[] getPatternItems()
-
zeroPaddingNumber
@Deprecated protected void zeroPaddingNumber(NumberFormat nf, java.lang.StringBuffer buf, int value, int minDigits, int maxDigits)
Deprecated.This API is ICU internal only.Internal high-speed method. Reuses a StringBuffer for results instead of creating a String on the heap for each call.
-
setNumberFormat
public void setNumberFormat(NumberFormat newNumberFormat)
Overrides superclass method and This method also clears per field NumberFormat instances previously set bysetNumberFormat(String, NumberFormat)
- Overrides:
setNumberFormat
in classDateFormat
- Parameters:
newNumberFormat
- the given new NumberFormat.
-
initLocalZeroPaddingNumberFormat
private void initLocalZeroPaddingNumberFormat()
-
fastZeroPaddingNumber
private void fastZeroPaddingNumber(java.lang.StringBuffer buf, int value, int minDigits, int maxDigits)
-
zeroPaddingNumber
protected java.lang.String zeroPaddingNumber(long value, int minDigits, int maxDigits)
Formats a number with the specified minimum and maximum number of digits.
-
isNumeric
private static final boolean isNumeric(char formatChar, int count)
Return true if the given format character, occurring count times, represents a numeric field.
-
parse
public void parse(java.lang.String text, Calendar cal, java.text.ParsePosition parsePos)
Overrides DateFormat- Specified by:
parse
in classDateFormat
- Parameters:
text
- 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.- See Also:
DateFormat
-
matchLiteral
private int matchLiteral(java.lang.String text, int pos, java.lang.Object[] items, int itemIndex, boolean[] complete)
Matches text (starting at pos) with patl. Returns the new pos, and sets complete[0] if it matched the entire text. Whitespace sequences are treated as singletons.If isLenient and if we fail to match the first time, some special hacks are put into place.
- we are between date and time fields, then one or more whitespace characters in the text are accepted instead.
- we are after a non-numeric field, and the text starts with a ".", we skip it.
-
matchAlphaMonthStrings
@Deprecated private int matchAlphaMonthStrings(java.lang.String text, int start, java.lang.String[] wideData, java.lang.String[] shortData, Calendar cal)
Deprecated.This API is ICU internal only. Does not handle monthPattern. field is always Calendar.MONTHAttempt to match the text at a given position against two arrays of month symbol strings. Since multiple strings in the array may match (for example, if the array contains "a", "ab", and "abc", all will match the input string "abcd") the longest match is returned. As a side effect, the given field ofcal
is set to the index of the best match, if there is one.- Parameters:
text
- the time text being parsed.start
- where to start parsing.wideData
- the string array of wide month symbolsshortData
- the string array of short month symbolscal
-- Returns:
- the new start position if matching succeeded; a negative
number indicating matching failure, otherwise. As a side effect,
sets the
cal
fieldfield
to the index of the best match, if matching succeeded.
-
matchString
protected int matchString(java.lang.String text, int start, int field, java.lang.String[] data, Calendar cal)
Attempt to match the text at a given position against an array of strings. Since multiple strings in the array may match (for example, if the array contains "a", "ab", and "abc", all will match the input string "abcd") the longest match is returned. As a side effect, the given field ofcal
is set to the index of the best match, if there is one.- Parameters:
text
- the time text being parsed.start
- where to start parsing.field
- the date field being parsed.data
- the string array to parsed.cal
-- Returns:
- the new start position if matching succeeded; a negative
number indicating matching failure, otherwise. As a side effect,
sets the
cal
fieldfield
to the index of the best match, if matching succeeded.
-
matchString
@Deprecated private int matchString(java.lang.String text, int start, int field, java.lang.String[] data, java.lang.String monthPattern, Calendar cal)
Deprecated.This API is ICU internal only.Attempt to match the text at a given position against an array of strings. Since multiple strings in the array may match (for example, if the array contains "a", "ab", and "abc", all will match the input string "abcd") the longest match is returned. As a side effect, the given field ofcal
is set to the index of the best match, if there is one.- Parameters:
text
- the time text being parsed.start
- where to start parsing.field
- the date field being parsed.data
- the string array to parsed.monthPattern
- leap month pattern, or null if none.cal
-- Returns:
- the new start position if matching succeeded; a negative
number indicating matching failure, otherwise. As a side effect,
sets the
cal
fieldfield
to the index of the best match, if matching succeeded.
-
regionMatchesWithOptionalDot
private int regionMatchesWithOptionalDot(java.lang.String text, int start, java.lang.String data, int length)
-
matchQuarterString
protected int matchQuarterString(java.lang.String text, int start, int field, java.lang.String[] data, Calendar cal)
Attempt to match the text at a given position against an array of quarter strings. Since multiple strings in the array may match (for example, if the array contains "a", "ab", and "abc", all will match the input string "abcd") the longest match is returned. As a side effect, the given field ofcal
is set to the index of the best match, if there is one.- Parameters:
text
- the time text being parsed.start
- where to start parsing.field
- the date field being parsed.data
- the string array to parsed.- Returns:
- the new start position if matching succeeded; a negative
number indicating matching failure, otherwise. As a side effect,
sets the
cal
fieldfield
to the index of the best match, if matching succeeded.
-
matchDayPeriodString
private int matchDayPeriodString(java.lang.String text, int start, java.lang.String[] data, int dataLength, Output<DayPeriodRules.DayPeriod> dayPeriod)
Similar to matchQuarterString but customized for day periods.
-
subParse
protected int subParse(java.lang.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 incal
. Returns -start (for ParsePosition) if failed. Subclasses may override this method to modify or add parsing capabilities.- Parameters:
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
-- Returns:
- the new start position if matching succeeded; a negative
number indicating matching failure, otherwise. As a side effect,
set the appropriate field of
cal
with the parsed value.
-
subParse
private int subParse(java.lang.String text, int start, char ch, int count, boolean obeyCount, boolean allowNegative, boolean[] ambiguousYear, Calendar cal, MessageFormat numericLeapMonthFormatter, Output<TimeZoneFormat.TimeType> tzTimeType)
Overloading to provide default argument (null) for day period.
-
subParse
@Deprecated private int subParse(java.lang.String text, int start, char ch, int count, boolean obeyCount, boolean allowNegative, boolean[] ambiguousYear, Calendar cal, MessageFormat numericLeapMonthFormatter, Output<TimeZoneFormat.TimeType> tzTimeType, Output<DayPeriodRules.DayPeriod> dayPeriod)
Deprecated.This API is ICU internal only.Protected method that converts one field of the input string into a numeric field value incal
. Returns -start (for ParsePosition) if failed. Subclasses may override this method to modify or add parsing capabilities.- Parameters:
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
-numericLeapMonthFormatter
- if non-null, used to parse numeric leap months.tzTimeType
- the type of parsed time zone - standard, daylight or unknown (output). This parameter can be null if caller does not need the information.- Returns:
- the new start position if matching succeeded; a negative
number indicating matching failure, otherwise. As a side effect,
set the appropriate field of
cal
with the parsed value.
-
allowNumericFallback
private boolean allowNumericFallback(int patternCharIndex)
return true if the pattern specified by patternCharIndex is one that allows numeric fallback regardless of actual pattern size.
-
parseInt
private java.lang.Number parseInt(java.lang.String text, java.text.ParsePosition pos, boolean allowNegative, NumberFormat fmt)
Parse an integer using numberFormat. This method is semantically const, but actually may modify fNumberFormat.
-
parseInt
private java.lang.Number parseInt(java.lang.String text, int maxDigits, java.text.ParsePosition pos, boolean allowNegative, NumberFormat fmt)
Parse an integer using numberFormat up to maxDigits.
-
countDigits
private static int countDigits(java.lang.String text, int start, int end)
Counts number of digit code points in the specified text.- Parameters:
text
- input textstart
- start index, inclusiveend
- end index, exclusive- Returns:
- number of digits found in the text in the specified range.
-
translatePattern
private java.lang.String translatePattern(java.lang.String pat, java.lang.String from, java.lang.String to)
Translate a pattern, mapping each character in the from string to the corresponding character in the to string.
-
toPattern
public java.lang.String toPattern()
Return a pattern string describing this date format.
-
toLocalizedPattern
public java.lang.String toLocalizedPattern()
Return a localized pattern string describing this date format.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 astoPattern()
.
-
applyPattern
public void applyPattern(java.lang.String pat)
Apply the given unlocalized pattern string to this date format.
-
applyLocalizedPattern
public void applyLocalizedPattern(java.lang.String pat)
Apply the given localized pattern string to this date format.
-
getDateFormatSymbols
public DateFormatSymbols getDateFormatSymbols()
Gets the date/time formatting data.- Returns:
- a copy of the date-time formatting data associated with this date-time formatter.
-
setDateFormatSymbols
public void setDateFormatSymbols(DateFormatSymbols newFormatSymbols)
Allows you to set the date/time formatting data.- Parameters:
newFormatSymbols
- the new symbols
-
getSymbols
protected DateFormatSymbols getSymbols()
Method for subclasses to access the DateFormatSymbols.
-
getTimeZoneFormat
public TimeZoneFormat getTimeZoneFormat()
Gets the time zone formatter which this date/time formatter uses to format and parse a time zone.- Returns:
- the time zone formatter which this date/time formatter uses.
-
setTimeZoneFormat
public void setTimeZoneFormat(TimeZoneFormat tzfmt)
Allows you to set the time zone formatter.- Parameters:
tzfmt
- the new time zone formatter
-
clone
public java.lang.Object clone()
Overrides Cloneable- Overrides:
clone
in classDateFormat
-
hashCode
public int hashCode()
Override hashCode. Generates the hash code for the SimpleDateFormat object- Overrides:
hashCode
in classDateFormat
-
equals
public boolean equals(java.lang.Object obj)
Override equals.- Overrides:
equals
in classDateFormat
-
writeObject
private void writeObject(java.io.ObjectOutputStream stream) throws java.io.IOException
Override writeObject. See http://docs.oracle.com/javase/6/docs/api/java/io/ObjectOutputStream.html- Throws:
java.io.IOException
-
readObject
private void readObject(java.io.ObjectInputStream stream) throws java.io.IOException, java.lang.ClassNotFoundException
Override readObject. See http://docs.oracle.com/javase/6/docs/api/java/io/ObjectInputStream.html- Throws:
java.io.IOException
java.lang.ClassNotFoundException
-
formatToCharacterIterator
public java.text.AttributedCharacterIterator formatToCharacterIterator(java.lang.Object obj)
Format the object to an attributed string, and return the corresponding iterator Overrides superclass method.- Overrides:
formatToCharacterIterator
in classjava.text.Format
- Parameters:
obj
- The object to format- Returns:
AttributedCharacterIterator
describing the formatted value.
-
getLocale
ULocale getLocale()
Get the locale of this simple date formatter. It is package accessible. also used in DateIntervalFormat.- Returns:
- locale in this simple date formatter
-
isFieldUnitIgnored
boolean isFieldUnitIgnored(int field)
Check whether the 'field' is smaller than all the fields covered in pattern, return true if it is. The sequence of calendar field, from large to small is: ERA, YEAR, MONTH, DATE, AM_PM, HOUR, MINUTE,...- Parameters:
field
- the calendar field need to check against- Returns:
- true if the 'field' is smaller than all the fields covered in pattern. false otherwise.
-
isFieldUnitIgnored
static boolean isFieldUnitIgnored(java.lang.String pattern, int field)
-
intervalFormatByAlgorithm
@Deprecated public final java.lang.StringBuffer intervalFormatByAlgorithm(Calendar fromCalendar, Calendar toCalendar, java.lang.StringBuffer appendTo, java.text.FieldPosition pos) throws java.lang.IllegalArgumentException
Deprecated.This API is ICU internal only.Format date interval by algorithm. It is supposed to be used only by CLDR survey tool.- Parameters:
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.- Returns:
- Reference to 'appendTo' parameter.
- Throws:
java.lang.IllegalArgumentException
- when there is non-recognized pattern letter
-
diffCalFieldValue
private boolean diffCalFieldValue(Calendar fromCalendar, Calendar toCalendar, java.lang.Object[] items, int i) throws java.lang.IllegalArgumentException
check whether the i-th item in 2 calendar is in different value. It is supposed to be used only by CLDR survey tool. It is used by intervalFormatByAlgorithm().- Parameters:
fromCalendar
- one calendartoCalendar
- the other calendaritems
- pattern itemsi
- the i-th item in pattern items- Returns:
- true is i-th item in 2 calendar is in different value, false otherwise.
- Throws:
java.lang.IllegalArgumentException
- when there is non-recognized pattern letter
-
lowerLevel
private boolean lowerLevel(java.lang.Object[] items, int i, int level) throws java.lang.IllegalArgumentException
check whether the i-th item's level is lower than the input 'level' It is supposed to be used only by CLDR survey tool. It is used by intervalFormatByAlgorithm().- Parameters:
items
- the pattern itemsi
- the i-th item in pattern itemslevel
- the level with which the i-th pattern item compared to- Returns:
- true if i-th pattern item is lower than 'level', false otherwise
- Throws:
java.lang.IllegalArgumentException
- when there is non-recognized pattern letter
-
setNumberFormat
public void setNumberFormat(java.lang.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)- Parameters:
fields
- the fields to overrideoverrideNF
- the NumbeferFormat used- Throws:
java.lang.IllegalArgumentException
- when the fields contain invalid field
-
getNumberFormat
public NumberFormat getNumberFormat(char field)
give the NumberFormat used for the field like 'y'(year) and 'M'(year)- Parameters:
field
- the field the user wants- Returns:
- override NumberFormat used for the field
-
initNumberFormatters
private void initNumberFormatters(ULocale loc)
-
processOverrideString
private void processOverrideString(ULocale loc, java.lang.String str)
-
parsePattern
private void parsePattern()
-
-