Class 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

Fields

Modifier and Type Field Description
static DateFormat.Field AM_PM

Constant identifying the time of day indicator (e.g.
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.
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 declared in class java.text.AttributedCharacterIterator.Attribute

INPUT_METHOD_SEGMENT, LANGUAGE, READING

Constructors

Modifier Constructor Description
protected Field​(String name, int calendarField)

Creates a Field.

Methods

Modifier and Type Method Description
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 declared in class java.text.AttributedCharacterIterator.Attribute

equals, getName, hashCode, toString

Methods declared in class java.lang.Object

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

Fields

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.

Constructors

Field

protected Field(String name,
                int calendarField)

Creates a Field.

Parameters:
name - the name of the Field
calendarField - the Calendar constant this Field corresponds to; any value, even one outside the range of legal Calendar values may be used, but -1 should be used for values that don't correspond to legal Calendar values

Methods

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.