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DateFormatSymbols

public class DateFormatSymbols
extends Object implements Serializable, Cloneable

java.lang.Object
   ↳ java.text.DateFormatSymbols

DateFormatSymbols is a public class for encapsulating localizable date-time formatting data, such as the names of the months, the names of the days of the week, and the time zone data. SimpleDateFormat uses DateFormatSymbols to encapsulate this information.

Typically you shouldn't use DateFormatSymbols directly. Rather, you are encouraged to create a date-time formatter with the DateFormat class's factory methods: getTimeInstance, getDateInstance, or getDateTimeInstance. These methods automatically create a DateFormatSymbols for the formatter so that you don't have to. After the formatter is created, you may modify its format pattern using the setPattern method. For more information about creating formatters using DateFormat's factory methods, see DateFormat.

If you decide to create a date-time formatter with a specific format pattern for a specific locale, you can do so with: 

 new SimpleDateFormat(aPattern, DateFormatSymbols.getInstance(aLocale)).

DateFormatSymbols objects are cloneable. When you obtain a DateFormatSymbols object, feel free to modify the date-time formatting data. For instance, you can replace the localized date-time format pattern characters with the ones that you feel easy to remember. Or you can change the representative cities to your favorite ones.

New DateFormatSymbols subclasses may be added to support SimpleDateFormat for date-time formatting for additional locales.

See also:

Summary

Public constructors

DateFormatSymbols()

Construct a DateFormatSymbols object by loading format data from resources for the default FORMAT locale.

DateFormatSymbols(Locale locale)

Construct a DateFormatSymbols object by loading format data from resources for the given locale.

Public methods

Object clone()

Overrides Cloneable

boolean equals(Object obj)

Override equals

String[] getAmPmStrings()

Gets ampm strings.

static Locale[] getAvailableLocales()

Returns an array of all locales for which the getInstance methods of this class can return localized instances.

String[] getEras()

Gets era strings.

static final DateFormatSymbols getInstance()

Gets the DateFormatSymbols instance for the default locale.

static final DateFormatSymbols getInstance(Locale locale)

Gets the DateFormatSymbols instance for the specified locale.

String getLocalPatternChars()

Gets localized date-time pattern characters.

String[] getMonths()

Gets month strings.

String[] getShortMonths()

Gets short month strings.

String[] getShortWeekdays()

Gets short weekday strings.

String[] getWeekdays()

Gets weekday strings.

String[][] getZoneStrings()

Gets time zone strings.

int hashCode()

Override hashCode.

void setAmPmStrings(String[] newAmpms)

Sets ampm strings.

void setEras(String[] newEras)

Sets era strings.

void setLocalPatternChars(String newLocalPatternChars)

Sets localized date-time pattern characters.

void setMonths(String[] newMonths)

Sets month strings.

void setShortMonths(String[] newShortMonths)

Sets short month strings.

void setShortWeekdays(String[] newShortWeekdays)

Sets short weekday strings.

void setWeekdays(String[] newWeekdays)

Sets weekday strings.

void setZoneStrings(String[][] newZoneStrings)

Sets time zone strings.

Inherited methods

Public constructors

DateFormatSymbols

public DateFormatSymbols ()

Construct a DateFormatSymbols object by loading format data from resources for the default FORMAT locale. It is recommended that the getInstance method is used instead.

This is equivalent to calling DateFormatSymbols(Locale.getDefault(Locale.Category.FORMAT)).

Throws
MissingResourceException if the resources for the default locale cannot be found or cannot be loaded.

See also:

DateFormatSymbols

public DateFormatSymbols (Locale locale)

Construct a DateFormatSymbols object by loading format data from resources for the given locale. It is recommended that the getInstance method is used instead.

Parameters
locale Locale: the desired locale
Throws
MissingResourceException if the resources for the specified locale cannot be found or cannot be loaded.

See also:

Public methods

clone

public Object clone ()

Overrides Cloneable

Returns
Object a clone of this instance.

equals

public boolean equals (Object obj)

Override equals

Parameters
obj Object: the reference object with which to compare.
Returns
boolean true if this object is the same as the obj argument; false otherwise.

getAmPmStrings

public String[] getAmPmStrings ()

Gets ampm strings. For example: "AM" and "PM".

Returns
String[] the ampm strings.

getAvailableLocales

public static Locale[] getAvailableLocales ()

Returns an array of all locales for which the getInstance methods of this class can return localized instances.

Returns
Locale[] An array of locales for which localized DateFormatSymbols instances are available.

getEras

public String[] getEras ()

Gets era strings. For example: "AD" and "BC".

Returns
String[] the era strings.

getInstance

public static final DateFormatSymbols getInstance ()

Gets the DateFormatSymbols instance for the default locale.

This is equivalent to calling getInstance(Locale.getDefault(Locale.Category.FORMAT)).

Returns
DateFormatSymbols a DateFormatSymbols instance.

See also:

getInstance

public static final DateFormatSymbols getInstance (Locale locale)

Gets the DateFormatSymbols instance for the specified locale.

Parameters
locale Locale: the given locale.
Returns
DateFormatSymbols a DateFormatSymbols instance.
Throws
NullPointerException if locale is null

getLocalPatternChars

public String getLocalPatternChars ()

Gets localized date-time pattern characters. For example: 'u', 't', etc.

Returns
String the localized date-time pattern characters.

getMonths

public String[] getMonths ()

Gets month strings. For example: "January", "February", etc.

If the language requires different forms for formatting and stand-alone usages, this method returns month names in the formatting form. For example, the preferred month name for January in the Czech language is ledna in the formatting form, while it is leden in the stand-alone form. This method returns "ledna" in this case. Refer to the Calendar Elements in the Unicode Locale Data Markup Language (LDML) specification for more details.

Returns
String[] the month strings.

getShortMonths

public String[] getShortMonths ()

Gets short month strings. For example: "Jan", "Feb", etc.

If the language requires different forms for formatting and stand-alone usages, This method returns short month names in the formatting form. For example, the preferred abbreviation for January in the Catalan language is de gen. in the formatting form, while it is gen. in the stand-alone form. This method returns "de gen." in this case. Refer to the Calendar Elements in the Unicode Locale Data Markup Language (LDML) specification for more details.

Returns
String[] the short month strings.

getShortWeekdays

public String[] getShortWeekdays ()

Gets short weekday strings. For example: "Sun", "Mon", etc.

Returns
String[] the short weekday strings. Use Calendar.SUNDAY, Calendar.MONDAY, etc. to index the result array.

getWeekdays

public String[] getWeekdays ()

Gets weekday strings. For example: "Sunday", "Monday", etc.

Returns
String[] the weekday strings. Use Calendar.SUNDAY, Calendar.MONDAY, etc. to index the result array.

getZoneStrings

public String[][] getZoneStrings ()

Gets time zone strings. Use of this method is discouraged; use TimeZone.getDisplayName() instead.

The value returned is a two-dimensional array of strings of size n by m, where m is at least 5. Each of the n rows is an entry containing the localized names for a single TimeZone. Each such row contains (with i ranging from 0..n-1):

  • zoneStrings[i][0] - time zone ID
  • zoneStrings[i][1] - long name of zone in standard time
  • zoneStrings[i][2] - short name of zone in standard time
  • zoneStrings[i][3] - long name of zone in daylight saving time
  • zoneStrings[i][4] - short name of zone in daylight saving time
The zone ID is not localized; it's one of the valid IDs of the TimeZone class that are not custom IDs. All other entries are localized names. If a zone does not implement daylight saving time, the daylight saving time names should not be used.

If setZoneStrings has been called on this DateFormatSymbols instance, then the strings provided by that call are returned. Otherwise, the returned array contains names provided by the runtime.

Returns
String[][] the time zone strings.

See also:

hashCode

public int hashCode ()

Override hashCode. Generates a hash code for the DateFormatSymbols object.

Returns
int a hash code value for this object.

setAmPmStrings

public void setAmPmStrings (String[] newAmpms)

Sets ampm strings. For example: "AM" and "PM".

Parameters
newAmpms String: the new ampm strings.

setEras

public void setEras (String[] newEras)

Sets era strings. For example: "AD" and "BC".

Parameters
newEras String: the new era strings.

setLocalPatternChars

public void setLocalPatternChars (String newLocalPatternChars)

Sets localized date-time pattern characters. For example: 'u', 't', etc.

Parameters
newLocalPatternChars String: the new localized date-time pattern characters.

setMonths

public void setMonths (String[] newMonths)

Sets month strings. For example: "January", "February", etc.

Parameters
newMonths String: the new month strings.

setShortMonths

public void setShortMonths (String[] newShortMonths)

Sets short month strings. For example: "Jan", "Feb", etc.

Parameters
newShortMonths String: the new short month strings.

setShortWeekdays

public void setShortWeekdays (String[] newShortWeekdays)

Sets short weekday strings. For example: "Sun", "Mon", etc.

Parameters
newShortWeekdays String: the new short weekday strings. The array should be indexed by Calendar.SUNDAY, Calendar.MONDAY, etc.

setWeekdays

public void setWeekdays (String[] newWeekdays)

Sets weekday strings. For example: "Sunday", "Monday", etc.

Parameters
newWeekdays String: the new weekday strings. The array should be indexed by Calendar.SUNDAY, Calendar.MONDAY, etc.

setZoneStrings

public void setZoneStrings (String[][] newZoneStrings)

Sets time zone strings. The argument must be a two-dimensional array of strings of size n by m, where m is at least 5. Each of the n rows is an entry containing the localized names for a single TimeZone. Each such row contains (with i ranging from 0..n-1):

  • zoneStrings[i][0] - time zone ID
  • zoneStrings[i][1] - long name of zone in standard time
  • zoneStrings[i][2] - short name of zone in standard time
  • zoneStrings[i][3] - long name of zone in daylight saving time
  • zoneStrings[i][4] - short name of zone in daylight saving time
The zone ID is not localized; it's one of the valid IDs of the TimeZone class that are not custom IDs. All other entries are localized names.

Parameters
newZoneStrings String: the new time zone strings.
Throws
IllegalArgumentException if the length of any row in newZoneStrings is less than 5
NullPointerException if newZoneStrings is null

See also:

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