DurationFieldType

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

All Implemented Interfaces:

java.io.Serializable
```
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

Author:

Stephen Colebourne, Brian S O'Neill

See Also:

Serialized Form

Constructor Summary

Constructors
Modifier Constructor Description

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

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

- 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

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

DurationFieldType

Method Detail

millis

seconds

minutes

hours

halfdays

days

weeks

weekyears

months

years

centuries

eras

getName

getField

isSupported

toString