java.text
Class DateFormat.Field

java.lang.Object
  java.text.AttributedCharacterIterator.Attribute
      java.text.Format.Field
          java.text.DateFormat.Field

All Implemented Interfaces:

Serializable

Enclosing class:

DateFormat

public static class DateFormat.Field

extends Format.Field

Defines constants that are used as attribute keys in the AttributedCharacterIterator returned from DateFormat.formatToCharacterIterator and as field identifiers in FieldPosition.

The class also provides two methods to map between its constants and the corresponding Calendar constants.

Since:

1.4

See Also:

Calendar, Serialized Form

Field Summary

static DateFormat.Field	AM_PM Constant identifying the time of day indicator (e.g.
private int	calendarField Calendar field.
private static DateFormat.Field[]	calendarToFieldMapping
static DateFormat.Field	DAY_OF_MONTH Constant identifying the day of month field.
static DateFormat.Field	DAY_OF_WEEK Constant identifying the day of week field.
static DateFormat.Field	DAY_OF_WEEK_IN_MONTH Constant identifying the day of week field.
static DateFormat.Field	DAY_OF_YEAR Constant identifying the day of year field.
static DateFormat.Field	ERA Constant identifying the era field.
static DateFormat.Field	HOUR_OF_DAY0 Constant identifying the hour of day field, where the legal values are 0 to 23.
static DateFormat.Field	HOUR_OF_DAY1 Constant identifying the hour of day field, where the legal values are 1 to 24.
static DateFormat.Field	HOUR0 Constant identifying the hour field, where the legal values are 0 to 11.
static DateFormat.Field	HOUR1 Constant identifying the hour field, where the legal values are 1 to 12.
private static Map	instanceMap
static DateFormat.Field	MILLISECOND Constant identifying the millisecond field.
static DateFormat.Field	MINUTE Constant identifying the minute field.
static DateFormat.Field	MONTH Constant identifying the month field.
static DateFormat.Field	SECOND Constant identifying the second field.
static DateFormat.Field	TIME_ZONE Constant identifying the time zone field.
static DateFormat.Field	WEEK_OF_MONTH Constant identifying the week of month field.
static DateFormat.Field	WEEK_OF_YEAR Constant identifying the week of year field.
static DateFormat.Field	YEAR Constant identifying the year field.

Fields inherited from class java.text.AttributedCharacterIterator.Attribute

INPUT_METHOD_SEGMENT, LANGUAGE, READING

Constructor Summary

protected

DateFormat.Field(String name, int calendarField) Creates a Field with the specified name.

Method Summary

int	getCalendarField() Returns the Calendar field associated with this attribute.
static DateFormat.Field	ofCalendarField(int calendarField) Returns the Field constant that corresponds to the Calendar constant calendarField.
protected Object	readResolve() Resolves instances being deserialized to the predefined constants.

Methods inherited from class java.text.AttributedCharacterIterator.Attribute

equals, getName, hashCode, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

instanceMap

private static final Map instanceMap

calendarToFieldMapping

private static final DateFormat.Field[] calendarToFieldMapping

calendarField

private int calendarField

Calendar field.

ERA

public static final DateFormat.Field ERA

Constant identifying the era field.

YEAR

public static final DateFormat.Field YEAR

Constant identifying the year field.

MONTH

public static final DateFormat.Field MONTH

Constant identifying the month field.

DAY_OF_MONTH

public static final DateFormat.Field DAY_OF_MONTH

Constant identifying the day of month field.

HOUR_OF_DAY1

public static final DateFormat.Field HOUR_OF_DAY1

Constant identifying the hour of day field, where the legal values are 1 to 24.

HOUR_OF_DAY0

public static final DateFormat.Field HOUR_OF_DAY0

Constant identifying the hour of day field, where the legal values are 0 to 23.

MINUTE

public static final DateFormat.Field MINUTE

Constant identifying the minute field.

SECOND

public static final DateFormat.Field SECOND

Constant identifying the second field.

MILLISECOND

public static final DateFormat.Field MILLISECOND

Constant identifying the millisecond field.

DAY_OF_WEEK

public static final DateFormat.Field DAY_OF_WEEK

Constant identifying the day of week field.

DAY_OF_YEAR

public static final DateFormat.Field DAY_OF_YEAR

Constant identifying the day of year field.

DAY_OF_WEEK_IN_MONTH

public static final DateFormat.Field DAY_OF_WEEK_IN_MONTH

Constant identifying the day of week field.

WEEK_OF_YEAR

public static final DateFormat.Field WEEK_OF_YEAR

Constant identifying the week of year field.

WEEK_OF_MONTH

public static final DateFormat.Field WEEK_OF_MONTH

Constant identifying the week of month field.

AM_PM

public static final DateFormat.Field AM_PM

Constant identifying the time of day indicator (e.g. "a.m." or "p.m.") field.

HOUR1

public static final DateFormat.Field HOUR1

Constant identifying the hour field, where the legal values are 1 to 12.

HOUR0

public static final DateFormat.Field HOUR0

Constant identifying the hour field, where the legal values are 0 to 11.

TIME_ZONE

public static final DateFormat.Field TIME_ZONE

Constant identifying the time zone field.

Constructor Detail

DateFormat.Field

protected DateFormat.Field(String name,
                           int calendarField)

Creates a Field with the specified name. calendarField is used to identify the Calendar field this attribute represents. Use -1 if this field does not have a corresponding Calendar value.

Parameters:

name - Name of the attribute

calendarField - Calendar constant

Method Detail

ofCalendarField

public static DateFormat.Field ofCalendarField(int calendarField)

Returns the Field constant that corresponds to the Calendar constant calendarField. If there is no direct mapping between the Calendar constant and a Field, null is returned.

Parameters:

calendarField - Calendar field constant

Returns:

Field instance representing calendarField.

Throws:

IllegalArgumentException - if calendarField is not the value of a Calendar field constant.

See Also:

Calendar

getCalendarField

public int getCalendarField()

Returns the Calendar field associated with this attribute. For example, if this represents the hours field of a Calendar, this would return Calendar.HOUR. If there is no corresponding Calendar constant, this will return -1.

Returns:

Calendar constant for this field

See Also:

Calendar

readResolve

protected Object readResolve()
                      throws InvalidObjectException

Resolves instances being deserialized to the predefined constants.

Overrides:

readResolve in class AttributedCharacterIterator.Attribute

Returns:

resolved DateFormat.Field constant

Throws:

InvalidObjectException - if the constant could not be resolved.