Package org.joda.time

Class 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
    See Also:
    Serialized Form

    • 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