java.lang.Object
- org.joda.time.DurationFieldType

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

DurationFieldType.StandardDurationFieldType
```
public abstract class DurationFieldType
extends java.lang.Object
implements java.io.Serializable
```
Identifies a duration field, such as years or minutes, in a chronology-neutral way.
A duration field type defines the type of the field, such as hours. If does not directly enable any calculations, however it does provide a getField(Chronology) method that returns the actual calculation engine for a particular chronology.
Instances of DurationFieldType are singletons. They can be compared using ==.
If required, you can create your own field, for example a quarters. You must create a subclass of DurationFieldType that defines the field type. This class returns the actual calculation engine from getField(Chronology).

Since:

1.0

See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class Description

private static class DurationFieldType.StandardDurationFieldType

Field Summary

Fields
Modifier and Type	Field	Description
`(package private) static byte`	`CENTURIES`
`(package private) static DurationFieldType`	`CENTURIES_TYPE`	The centuries field type.
`(package private) static byte`	`DAYS`
`(package private) static DurationFieldType`	`DAYS_TYPE`	The days field type.
`(package private) static byte`	`ERAS`
`(package private) static DurationFieldType`	`ERAS_TYPE`	The eras field type.
`(package private) static byte`	`HALFDAYS`
`(package private) static DurationFieldType`	`HALFDAYS_TYPE`	The halfdays field type.
`(package private) static byte`	`HOURS`
`(package private) static DurationFieldType`	`HOURS_TYPE`	The hours field type.
`private java.lang.String`	`iName`	The name of the field type.
`(package private) static byte`	`MILLIS`
`(package private) static DurationFieldType`	`MILLIS_TYPE`	The millis field type.
`(package private) static byte`	`MINUTES`
`(package private) static DurationFieldType`	`MINUTES_TYPE`	The minutes field type.
`(package private) static byte`	`MONTHS`
`(package private) static DurationFieldType`	`MONTHS_TYPE`	The months field type.
`(package private) static byte`	`SECONDS`
`(package private) static DurationFieldType`	`SECONDS_TYPE`	The seconds field type.
`private static long`	`serialVersionUID`	Serialization version
`(package private) static byte`	`WEEKS`
`(package private) static DurationFieldType`	`WEEKS_TYPE`	The weeks field type.
`(package private) static byte`	`WEEKYEARS`
`(package private) static DurationFieldType`	`WEEKYEARS_TYPE`	The weekyears field type.
`(package private) static byte`	`YEARS`
`(package private) static DurationFieldType`	`YEARS_TYPE`	The years field type.

Constructor Summary

Constructors
Modifier Constructor Description

protected DurationFieldType(java.lang.String name)
Constructor.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`static DurationFieldType`	`centuries()`	Get the centuries field type.
`static DurationFieldType`	`days()`	Get the days field type.
`static DurationFieldType`	`eras()`	Get the eras field type.
`abstract DurationField`	`getField(Chronology chronology)`	Gets a suitable field for this type from the given Chronology.
`java.lang.String`	`getName()`	Get the name of the field.
`static DurationFieldType`	`halfdays()`	Get the halfdays field type.
`static DurationFieldType`	`hours()`	Get the hours field type.
`boolean`	`isSupported(Chronology chronology)`	Checks whether this field supported in the given Chronology.
`static DurationFieldType`	`millis()`	Get the millis field type.
`static DurationFieldType`	`minutes()`	Get the minutes field type.
`static DurationFieldType`	`months()`	Get the months field type.
`static DurationFieldType`	`seconds()`	Get the seconds field type.
`java.lang.String`	`toString()`	Get a suitable debug string.
`static DurationFieldType`	`weeks()`	Get the weeks field type.
`static DurationFieldType`	`weekyears()`	Get the weekyears field type.
`static DurationFieldType`	`years()`	Get the years field type.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - serialVersionUID
```
private static final long serialVersionUID
```
    Serialization version
    
    See Also:
    
    Constant Field Values
  - ERAS
```
static final byte ERAS
```
    See Also:
    
    Constant Field Values
  - CENTURIES
```
static final byte CENTURIES
```
    See Also:
    
    Constant Field Values
  - WEEKYEARS
```
static final byte WEEKYEARS
```
    See Also:
    
    Constant Field Values
  - YEARS
```
static final byte YEARS
```
    See Also:
    
    Constant Field Values
  - MONTHS
```
static final byte MONTHS
```
    See Also:
    
    Constant Field Values
  - WEEKS
```
static final byte WEEKS
```
    See Also:
    
    Constant Field Values
  - DAYS
```
static final byte DAYS
```
    See Also:
    
    Constant Field Values
  - HALFDAYS
```
static final byte HALFDAYS
```
    See Also:
    
    Constant Field Values
  - HOURS
```
static final byte HOURS
```
    See Also:
    
    Constant Field Values
  - MINUTES
```
static final byte MINUTES
```
    See Also:
    
    Constant Field Values
  - SECONDS
```
static final byte SECONDS
```
    See Also:
    
    Constant Field Values
  - MILLIS
```
static final byte MILLIS
```
    See Also:
    
    Constant Field Values
  - ERAS_TYPE
```
static final DurationFieldType ERAS_TYPE
```
    The eras field type.
  - CENTURIES_TYPE
```
static final DurationFieldType CENTURIES_TYPE
```
    The centuries field type.
  - WEEKYEARS_TYPE
```
static final DurationFieldType WEEKYEARS_TYPE
```
    The weekyears field type.
  - YEARS_TYPE
```
static final DurationFieldType YEARS_TYPE
```
    The years field type.
  - MONTHS_TYPE
```
static final DurationFieldType MONTHS_TYPE
```
    The months field type.
  - WEEKS_TYPE
```
static final DurationFieldType WEEKS_TYPE
```
    The weeks field type.
  - DAYS_TYPE
```
static final DurationFieldType DAYS_TYPE
```
    The days field type.
  - HALFDAYS_TYPE
```
static final DurationFieldType HALFDAYS_TYPE
```
    The halfdays field type.
  - HOURS_TYPE
```
static final DurationFieldType HOURS_TYPE
```
    The hours field type.
  - MINUTES_TYPE
```
static final DurationFieldType MINUTES_TYPE
```
    The minutes field type.
  - SECONDS_TYPE
```
static final DurationFieldType SECONDS_TYPE
```
    The seconds field type.
  - MILLIS_TYPE
```
static final DurationFieldType MILLIS_TYPE
```
    The millis field type.
  - iName
```
private final java.lang.String iName
```
    The name of the field type.
- Constructor Detail
  - DurationFieldType
```
protected DurationFieldType(java.lang.String name)
```
    Constructor.
    
    Parameters:
    
    name - the name to use, which by convention, are plural.
- Method Detail
  - millis
```
public static DurationFieldType millis()
```
    Get the millis field type.
    
    Returns:
    
    the DurationFieldType constant
  - seconds
```
public static DurationFieldType seconds()
```
    Get the seconds field type.
    
    Returns:
    
    the DurationFieldType constant
  - minutes
```
public static DurationFieldType minutes()
```
    Get the minutes field type.
    
    Returns:
    
    the DurationFieldType constant
  - hours
```
public static DurationFieldType hours()
```
    Get the hours field type.
    
    Returns:
    
    the DurationFieldType constant
  - halfdays
```
public static DurationFieldType halfdays()
```
    Get the halfdays field type.
    
    Returns:
    
    the DurationFieldType constant
  - days
```
public static DurationFieldType days()
```
    Get the days field type.
    
    Returns:
    
    the DurationFieldType constant
  - weeks
```
public static DurationFieldType weeks()
```
    Get the weeks field type.
    
    Returns:
    
    the DurationFieldType constant
  - weekyears
```
public static DurationFieldType weekyears()
```
    Get the weekyears field type.
    
    Returns:
    
    the DurationFieldType constant
  - months
```
public static DurationFieldType months()
```
    Get the months field type.
    
    Returns:
    
    the DurationFieldType constant
  - years
```
public static DurationFieldType years()
```
    Get the years field type.
    
    Returns:
    
    the DurationFieldType constant
  - centuries
```
public static DurationFieldType centuries()
```
    Get the centuries field type.
    
    Returns:
    
    the DurationFieldType constant
  - eras
```
public static DurationFieldType eras()
```
    Get the eras field type.
    
    Returns:
    
    the DurationFieldType constant
  - getName
```
public java.lang.String getName()
```
    Get the name of the field. By convention, names are plural.
    
    Returns:
    
    field name
  - getField
```
public abstract DurationField getField(Chronology chronology)
```
    Gets a suitable field for this type from the given Chronology.
    
    Parameters:
    
    chronology - the chronology to use, null means ISOChronology in default zone
    
    Returns:
    
    a suitable field
  - isSupported
```
public boolean isSupported(Chronology chronology)
```
    Checks whether this field supported in the given Chronology.
    
    Parameters:
    
    chronology - the chronology to use, null means ISOChronology in default zone
    
    Returns:
    
    true if supported
  - toString
```
public java.lang.String toString()
```
    Get a suitable debug string.
    
    Overrides:
    
    toString in class java.lang.Object
    
    Returns:
    
    debug string

Class DurationFieldType

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

serialVersionUID

ERAS

CENTURIES

WEEKYEARS

YEARS

MONTHS

WEEKS

DAYS

HALFDAYS

HOURS

MINUTES

SECONDS

MILLIS

ERAS_TYPE

CENTURIES_TYPE

WEEKYEARS_TYPE

YEARS_TYPE

MONTHS_TYPE

WEEKS_TYPE

DAYS_TYPE

HALFDAYS_TYPE

HOURS_TYPE

MINUTES_TYPE

SECONDS_TYPE

MILLIS_TYPE

iName

Constructor Detail

DurationFieldType

Method Detail

millis

seconds

minutes

hours

halfdays

days

weeks

weekyears

months

years

centuries

eras

getName

getField

isSupported

toString