Class TimeZoneFormat

java.lang.Object
java.text.Format
com.ibm.icu.text.UFormat
com.ibm.icu.text.TimeZoneFormat
All Implemented Interfaces:
Freezable<TimeZoneFormat>, Serializable, Cloneable
public class TimeZoneFormat extends UFormat implements Freezable<TimeZoneFormat>, Serializable, Cloneable
TimeZoneFormat supports time zone display name formatting and parsing. An instance of TimeZoneFormat works as a subformatter of SimpleDateFormat, but you can also directly get a new instance of TimeZoneFormat and formatting/parsing time zone display names.

ICU implements the time zone display names defined by UTS#35 Unicode Locale Data Markup Language (LDML). TimeZoneNames represents the time zone display name data model and this class implements the algorithm for actual formatting and parsing.

See Also:
Status:
Stable ICU 49.

  • Constructor Details

    • TimeZoneFormat

      protected TimeZoneFormat(ULocale locale)
      The protected constructor for subclassing.
      Parameters:
      locale - the locale
      Status:
      Stable ICU 49.

  • Method Details

    • getInstance

      public static TimeZoneFormat getInstance(ULocale locale)
      Returns a frozen instance of TimeZoneFormat for the given locale.

      Note: The instance returned by this method is frozen. If you want to customize a TimeZoneFormat, you must use cloneAsThawed() to get a thawed copy first.

      Parameters:
      locale - the locale.
      Returns:
      a frozen instance of TimeZoneFormat for the given locale.
      Status:
      Stable ICU 49.

    • getInstance

      public static TimeZoneFormat getInstance(Locale locale)
      Returns a frozen instance of TimeZoneFormat for the given Locale.

      Note: The instance returned by this method is frozen. If you want to customize a TimeZoneFormat, you must use cloneAsThawed() to get a thawed copy first.

      Parameters:
      locale - the Locale.
      Returns:
      a frozen instance of TimeZoneFormat for the given locale.
      Status:
      Stable ICU 54.

    • getTimeZoneNames

      public TimeZoneNames getTimeZoneNames()
      Returns the time zone display name data used by this instance.
      Returns:
      the time zone display name data.
      See Also:
      Status:
      Stable ICU 49.

    • setTimeZoneNames

      public TimeZoneFormat setTimeZoneNames(TimeZoneNames tznames)
      Sets the time zone display name data to this instance.
      Parameters:
      tznames - the time zone display name data.
      Returns:
      this object.
      Throws:
      UnsupportedOperationException - when this object is frozen.
      See Also:
      Status:
      Stable ICU 49.

    • getGMTPattern

      public String getGMTPattern()
      Returns the localized GMT format pattern.
      Returns:
      the localized GMT format pattern.
      See Also:
      Status:
      Stable ICU 49.

    • setGMTPattern

      public TimeZoneFormat setGMTPattern(String pattern)
      Sets the localized GMT format pattern. The pattern must contain a single argument {0}, for example "GMT {0}".
      Parameters:
      pattern - the localized GMT format pattern string
      Returns:
      this object.
      Throws:
      IllegalArgumentException - when the pattern string does not contain "{0}"
      UnsupportedOperationException - when this object is frozen.
      See Also:
      Status:
      Stable ICU 49.

    • getGMTOffsetPattern

      public String getGMTOffsetPattern(TimeZoneFormat.GMTOffsetPatternType type)
      Returns the offset pattern used for localized GMT format.
      Parameters:
      type - the offset pattern enum
      See Also:
      Status:
      Stable ICU 49.

    • setGMTOffsetPattern

      public TimeZoneFormat setGMTOffsetPattern(TimeZoneFormat.GMTOffsetPatternType type, String pattern)
      Sets the offset pattern for the given offset type.
      Parameters:
      type - the offset pattern.
      pattern - the pattern string.
      Returns:
      this object.
      Throws:
      IllegalArgumentException - when the pattern string does not have required time field letters.
      UnsupportedOperationException - when this object is frozen.
      See Also:
      Status:
      Stable ICU 49.

    • getGMTOffsetDigits

      public String getGMTOffsetDigits()
      Returns the decimal digit characters used for localized GMT format in a single string containing from 0 to 9 in the ascending order.
      Returns:
      the decimal digits for localized GMT format.
      See Also:
      Status:
      Stable ICU 49.

    • setGMTOffsetDigits

      public TimeZoneFormat setGMTOffsetDigits(String digits)
      Sets the decimal digit characters used for localized GMT format.
      Parameters:
      digits - a string contains the decimal digit characters from 0 to 9 n the ascending order.
      Returns:
      this object.
      Throws:
      IllegalArgumentException - when the string did not contain ten characters.
      UnsupportedOperationException - when this object is frozen.
      See Also:
      Status:
      Stable ICU 49.

    • getGMTZeroFormat

      public String getGMTZeroFormat()
      Returns the localized GMT format string for GMT(UTC) itself (GMT offset is 0).
      Returns:
      the localized GMT string string for GMT(UTC) itself.
      See Also:
      Status:
      Stable ICU 49.

    • setGMTZeroFormat

      public TimeZoneFormat setGMTZeroFormat(String gmtZeroFormat)
      Sets the localized GMT format string for GMT(UTC) itself (GMT offset is 0).
      Parameters:
      gmtZeroFormat - the localized GMT format string for GMT(UTC).
      Returns:
      this object.
      Throws:
      UnsupportedOperationException - when this object is frozen.
      See Also:
      Status:
      Stable ICU 49.

    • setDefaultParseOptions

      public TimeZoneFormat setDefaultParseOptions(EnumSet<TimeZoneFormat.ParseOption> options)
      Sets the default parse options.

      Note: By default, an instance of TimeZoneFormat created by getInstance(ULocale) has no parse options set.

      Parameters:
      options - the default parse options.
      Returns:
      this object.
      See Also:
      Status:
      Stable ICU 49.

    • getDefaultParseOptions

      public EnumSet<TimeZoneFormat.ParseOption> getDefaultParseOptions()
      Returns the default parse options used by this TimeZoneFormat instance.
      Returns:
      the default parse options.
      See Also:
      Status:
      Stable ICU 49.

    • formatOffsetISO8601Basic

      public final String formatOffsetISO8601Basic(int offset, boolean useUtcIndicator, boolean isShort, boolean ignoreSeconds)
      Returns the ISO 8601 basic time zone string for the given offset. For example, "-08", "-0830" and "Z"
      Parameters:
      offset - the offset from GMT(UTC) in milliseconds.
      useUtcIndicator - true if ISO 8601 UTC indicator "Z" is used when the offset is 0.
      isShort - true if shortest form is used.
      ignoreSeconds - true if non-zero offset seconds is appended.
      Returns:
      the ISO 8601 basic format.
      Throws:
      IllegalArgumentException - if the specified offset is out of supported range (-24 hours < offset < +24 hours).
      See Also:
      Status:
      Stable ICU 51.

    • formatOffsetISO8601Extended

      public final String formatOffsetISO8601Extended(int offset, boolean useUtcIndicator, boolean isShort, boolean ignoreSeconds)
      Returns the ISO 8601 extended time zone string for the given offset. For example, "-08:00", "-08:30" and "Z"
      Parameters:
      offset - the offset from GMT(UTC) in milliseconds.
      useUtcIndicator - true if ISO 8601 UTC indicator "Z" is used when the offset is 0.
      isShort - true if shortest form is used.
      ignoreSeconds - true if non-zero offset seconds is appended.
      Returns:
      the ISO 8601 extended format.
      Throws:
      IllegalArgumentException - if the specified offset is out of supported range (-24 hours < offset < +24 hours).
      See Also:
      Status:
      Stable ICU 51.

    • formatOffsetLocalizedGMT

      public String formatOffsetLocalizedGMT(int offset)
      Returns the localized GMT(UTC) offset format for the given offset. The localized GMT offset is defined by; This format always uses 2 digit hours and minutes. When the given offset has non-zero seconds, 2 digit seconds field will be appended. For example, GMT+05:00 and GMT+05:28:06.
      Parameters:
      offset - the offset from GMT(UTC) in milliseconds.
      Returns:
      the localized GMT format string
      Throws:
      IllegalArgumentException - if the specified offset is out of supported range (-24 hours < offset < +24 hours).
      See Also:
      Status:
      Stable ICU 49.

    • formatOffsetShortLocalizedGMT

      public String formatOffsetShortLocalizedGMT(int offset)
      Returns the short localized GMT(UTC) offset format for the given offset. The short localized GMT offset is defined by; This format uses the shortest representation of offset. The hours field does not have leading zero and lower fields with zero will be truncated. For example, GMT+5 and GMT+530.
      Parameters:
      offset - the offset from GMT(UTC) in milliseconds.
      Returns:
      the short localized GMT format string
      Throws:
      IllegalArgumentException - if the specified offset is out of supported range (-24 hours < offset < +24 hours).
      See Also:
      Status:
      Stable ICU 51.

    • format

      public final String format(TimeZoneFormat.Style style, TimeZone tz, long date)
      Returns the display name of the time zone at the given date for the style.

      Note: A style may have fallback styles defined. For example, when GENERIC_LONG is requested, but there is no display name data available for GENERIC_LONG style, the implementation may use GENERIC_LOCATION or LOCALIZED_GMT. See UTS#35 UNICODE LOCALE DATA MARKUP LANGUAGE (LDML) Appendix J: Time Zone Display Name for the details.

      Parameters:
      style - the style enum (e.g. GENERIC_LONG, LOCALIZED_GMT...)
      tz - the time zone.
      date - the date.
      Returns:
      the display name of the time zone.
      See Also:
      Status:
      Stable ICU 49.

    • format

      public String format(TimeZoneFormat.Style style, TimeZone tz, long date, Output<TimeZoneFormat.TimeType> timeType)
      Returns the display name of the time zone at the given date for the style. This method takes an extra argument Output<TimeType> timeType in addition to the argument list of format(Style, TimeZone, long). The argument is used for receiving the time type (standard time or daylight saving time, or unknown) actually used for the display name.
      Parameters:
      style - the style enum (e.g. GENERIC_LONG, LOCALIZED_GMT...)
      tz - the time zone.
      date - the date.
      timeType - the output argument for receiving the time type (standard/daylight/unknown) used for the display name, or specify null if the information is not necessary.
      Returns:
      the display name of the time zone.
      See Also:
      Status:
      Stable ICU 49.

    • parseOffsetISO8601

      public final int parseOffsetISO8601(String text, ParsePosition pos)
      Returns offset from GMT(UTC) in milliseconds for the given ISO 8601 basic or extended time zone string. When the given string is not an ISO 8601 time zone string, this method sets the current position as the error index to ParsePosition pos and returns 0.
      Parameters:
      text - the text contains ISO 8601 style time zone string (e.g. "-08", "-0800", "-08:00", and "Z") at the position.
      pos - the position.
      Returns:
      the offset from GMT(UTC) in milliseconds for the given ISO 8601 style time zone string.
      See Also:
      Status:
      Stable ICU 49.

    • parseOffsetLocalizedGMT

      public int parseOffsetLocalizedGMT(String text, ParsePosition pos)
      Returns offset from GMT(UTC) in milliseconds for the given localized GMT offset format string. When the given string cannot be parsed, this method sets the current position as the error index to ParsePosition pos and returns 0.
      Parameters:
      text - the text contains a localized GMT offset string at the position.
      pos - the position.
      Returns:
      the offset from GMT(UTC) in milliseconds for the given localized GMT offset format string.
      See Also:
      Status:
      Stable ICU 49.

    • parseOffsetShortLocalizedGMT

      public int parseOffsetShortLocalizedGMT(String text, ParsePosition pos)
      Returns offset from GMT(UTC) in milliseconds for the given short localized GMT offset format string. When the given string cannot be parsed, this method sets the current position as the error index to ParsePosition pos and returns 0.
      Parameters:
      text - the text contains a short localized GMT offset string at the position.
      pos - the position.
      Returns:
      the offset from GMT(UTC) in milliseconds for the given short localized GMT offset format string.
      See Also:
      Status:
      Stable ICU 51.

    • parse

      public TimeZone parse(TimeZoneFormat.Style style, String text, ParsePosition pos, EnumSet<TimeZoneFormat.ParseOption> options, Output<TimeZoneFormat.TimeType> timeType)
      Returns a TimeZone by parsing the time zone string according to the parse position, the style and the parse options.
      Parameters:
      style - the format style.
      text - the text contains a time zone string at the position.
      pos - the position.
      options - the parse options.
      timeType - The output argument for receiving the time type (standard/daylight/unknown), or specify null if the information is not necessary.
      Returns:
      A TimeZone, or null if the input could not be parsed.
      See Also:
      Status:
      Stable ICU 49.

    • parse

      public TimeZone parse(TimeZoneFormat.Style style, String text, ParsePosition pos, Output<TimeZoneFormat.TimeType> timeType)
      Returns a TimeZone by parsing the time zone string according to the parse position, the style and the default parse options.

      Note: This method is equivalent to parse(style, text, pos, null, timeType).

      Parameters:
      style - the format style
      text - the text contains a time zone string at the position.
      pos - the position.
      timeType - The output argument for receiving the time type (standard/daylight/unknown), or specify null if the information is not necessary.
      Returns:
      A TimeZone, or null if the input could not be parsed.
      See Also:
      Status:
      Stable ICU 49.

    • parse

      public final TimeZone parse(String text, ParsePosition pos)
      Returns a TimeZone by parsing the time zone string according to the given parse position.

      Note: This method is equivalent to parse(Style.GENERIC_LOCATION, text, pos, EnumSet.of(ParseOption.ALL_STYLES), timeType).

      Parameters:
      text - the text contains a time zone string at the position.
      pos - the position.
      Returns:
      A TimeZone, or null if the input could not be parsed.
      See Also:
      Status:
      Stable ICU 49.

    • parse

      public final TimeZone parse(String text) throws ParseException
      Returns a TimeZone for the given text.

      Note: The behavior of this method is equivalent to parse(String, ParsePosition).

      Parameters:
      text - the time zone string
      Returns:
      A TimeZone.
      Throws:
      ParseException - when the input could not be parsed as a time zone string.
      See Also:
      Status:
      Stable ICU 49.

    • format

      public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos)
      Specified by:
      format in class Format
      Status:
      Stable ICU 49.

    • formatToCharacterIterator

      public AttributedCharacterIterator formatToCharacterIterator(Object obj)
      Overrides:
      formatToCharacterIterator in class Format
      Status:
      Stable ICU 49.

    • parseObject

      public Object parseObject(String source, ParsePosition pos)
      Specified by:
      parseObject in class Format
      Status:
      Stable ICU 49.

    • isFrozen

      public boolean isFrozen()
      Determines whether the object has been frozen or not.
      Specified by:
      isFrozen in interface Freezable<TimeZoneFormat>
      Status:
      Stable ICU 49.

    • freeze

      public TimeZoneFormat freeze()
      Freezes the object.
      Specified by:
      freeze in interface Freezable<TimeZoneFormat>
      Returns:
      the object itself.
      Status:
      Stable ICU 49.

    • cloneAsThawed

      public TimeZoneFormat cloneAsThawed()
      Provides for the clone operation. Any clone is initially unfrozen.
      Specified by:
      cloneAsThawed in interface Freezable<TimeZoneFormat>
      Status:
      Stable ICU 49.

    • clone

      public TimeZoneFormat clone()
      Overrides:
      clone in class Format
      Status:
      Stable ICU 49.