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java.text
Class DateFormatSymbols
java.lang.Object
java.text.DateFormatSymbols
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All Implemented Interfaces:
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Serializable
,
Cloneable
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public class DateFormatSymbols
- extends Object
- implements Serializable, Cloneable
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. DateFormat and SimpleDateFormat both use 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)).
![](../../diffpics/oold.gif)
new DateFormatSymbols(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.
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See Also:
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DateFormat
,
SimpleDateFormat
,
SimpleTimeZone
,
Serialized Form
Constructor Summary
|
DateFormatSymbols
()
Construct a DateFormatSymbols object by loading format data from resources for the default locale. |
DateFormatSymbols
(
Locale
locale)
Construct a DateFormatSymbols object by loading format data from resources for the given locale. |
DateFormatSymbols
public DateFormatSymbols()
-
Construct a DateFormatSymbols object by loading format data from resources for the default locale.
This constructor can only construct instances for the locales supported by the Java runtime environment, not for those supported by installed
DateFormatSymbolsProvider
implementations. For full locale coverage, use the
getInstance
method.
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Throws:
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MissingResourceException
- if the resources for the default locale cannot be found or cannot be loaded.
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See Also:
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getInstance()
DateFormatSymbols
public DateFormatSymbols(Locale locale)
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Construct a DateFormatSymbols object by loading format data from resources for the given locale.
This constructor can only construct instances for the locales supported by the Java runtime environment, not for those supported by installed
DateFormatSymbolsProvider
implementations. For full locale coverage, use the
getInstance
method.
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Throws:
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MissingResourceException
- if the resources for the specified locale cannot be found or cannot be loaded.
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See Also:
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getInstance(Locale)
getAvailableLocales
public static
Locale
[]
getAvailableLocales
()
-
Returns an array of all locales for which the getInstance methods of this class can return localized instances. The returned array represents the union of locales supported by the Java runtime and by installed
DateFormatSymbolsProvider
implementations. It must contain at least a Locale instance equal to
Locale.US
.
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-
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Returns:
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An array of locales for which localized DateFormatSymbols instances are available.
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Since:
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1.6
getInstance
public static final
DateFormatSymbols
getInstance
()
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Gets the DateFormatSymbols instance for the default locale. This method provides access to DateFormatSymbols instances for locales supported by the Java runtime itself as well as for those supported by installed
DateFormatSymbolsProvider
implementations.
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-
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Returns:
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a DateFormatSymbols instance.
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Since:
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1.6
getInstance
public static final
DateFormatSymbols
getInstance
(
Locale
locale)
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Gets the DateFormatSymbols instance for the specified locale. This method provides access to DateFormatSymbols instances for locales supported by the Java runtime itself as well as for those supported by installed
DateFormatSymbolsProvider
implementations.
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Parameters:
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locale - the given locale.
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Returns:
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a DateFormatSymbols instance.
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Throws:
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NullPointerException
- if locale is null
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Since:
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1.6
getEras
public String[] getEras()
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Gets era strings. For example: "AD" and "BC".
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Returns:
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the era strings.
setEras
public void setEras(String[] newEras)
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Sets era strings. For example: "AD" and "BC".
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Parameters:
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newEras - the new era strings.
getMonths
public String[] getMonths()
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Gets month strings. For example: "January", "February", etc.
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Returns:
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the month strings.
setMonths
public void setMonths(String[] newMonths)
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Sets month strings. For example: "January", "February", etc.
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Parameters:
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newMonths - the new month strings.
getShortMonths
public String[] getShortMonths()
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Gets short month strings. For example: "Jan", "Feb", etc.
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Returns:
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the short month strings.
setShortMonths
public void setShortMonths(String[] newShortMonths)
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Sets short month strings. For example: "Jan", "Feb", etc.
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Parameters:
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newShortMonths - the new short month strings.
getWeekdays
public String[] getWeekdays()
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Gets weekday strings. For example: "Sunday", "Monday", etc.
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Returns:
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the weekday strings. Use Calendar.SUNDAY, Calendar.MONDAY, etc. to index the result array.
setWeekdays
public void setWeekdays(String[] newWeekdays)
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Sets weekday strings. For example: "Sunday", "Monday", etc.
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Parameters:
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newWeekdays - the new weekday strings. The array should be indexed by Calendar.SUNDAY, Calendar.MONDAY, etc.
getShortWeekdays
public String[] getShortWeekdays()
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Gets short weekday strings. For example: "Sun", "Mon", etc.
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Returns:
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the short weekday strings. Use Calendar.SUNDAY, Calendar.MONDAY, etc. to index the result array.
setShortWeekdays
public void setShortWeekdays(String[] newShortWeekdays)
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Sets short weekday strings. For example: "Sun", "Mon", etc.
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Parameters:
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newShortWeekdays - the new short weekday strings. The array should be indexed by Calendar.SUNDAY, Calendar.MONDAY, etc.
getAmPmStrings
public String[] getAmPmStrings()
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Gets ampm strings. For example: "AM" and "PM".
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Returns:
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the ampm strings.
setAmPmStrings
public void setAmPmStrings(String[] newAmpms)
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Sets ampm strings. For example: "AM" and "PM".
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Parameters:
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newAmpms - the new ampm strings.
getZoneStrings
public String[][] getZoneStrings()
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Gets time zone strings. Use of this method is discouraged; use
TimeZone.getDisplayName()
instead.
Gets timezone strings.
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):
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zoneStrings[i][0] - time zone ID
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zoneStrings[i][1] - long name of zone in standard time
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zoneStrings[i][2] - short name of zone in standard time
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zoneStrings[i][3] - long name of zone in daylight saving time
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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 Java runtime and by installed
TimeZoneNameProvider
implementations.
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Returns:
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the time zone strings.
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See Also:
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setZoneStrings(String[][])
the timezone strings.
setZoneStrings
public void setZoneStrings(String[][] newZoneStrings)
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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):
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zoneStrings[i][0] - time zone ID
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zoneStrings[i][1] - long name of zone in standard time
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zoneStrings[i][2] - short name of zone in standard time
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zoneStrings[i][3] - long name of zone in daylight saving time
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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.
Sets timezone strings.
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Parameters:
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newZoneStrings - the new time zone strings.
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Throws:
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NullPointerException
- if newZoneStrings is null
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See Also:
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getZoneStrings()
newZoneStrings - the new timezone strings.
getLocalPatternChars
public String getLocalPatternChars()
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Gets localized date-time pattern characters. For example: 'u', 't', etc.
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Returns:
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the localized date-time pattern characters.
setLocalPatternChars
public void setLocalPatternChars(String newLocalPatternChars)
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Sets localized date-time pattern characters. For example: 'u', 't', etc.
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Parameters:
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newLocalPatternChars - the new localized date-time pattern characters.
clone
public Object clone()
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Overrides Cloneable
-
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Overrides:
-
clone
in class
Object
-
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Returns:
-
a clone of this instance.
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See Also:
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Cloneable
hashCode
public int hashCode()
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Override hashCode. Generates a hash code for the DateFormatSymbols object.
-
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Overrides:
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hashCode
in class
Object
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Returns:
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a hash code value for this object.
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See Also:
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Object.equals(java.lang.Object)
,
Hashtable
equals
public boolean equals(Object obj)
-
Override equals
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Overrides:
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equals
in class
Object
-
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Parameters:
-
obj - the reference object with which to compare.
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Returns:
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true if this object is the same as the obj argument; false otherwise.
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See Also:
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Object.hashCode()
,
Hashtable