net.time4j

Interface IsoUnit

All Superinterfaces:

ChronoUnit

All Known Subinterfaces:

IsoDateUnit, IsoTimeUnit

All Known Implementing Classes:

CalendarUnit, ClockUnit

public interface IsoUnit
extends ChronoUnit

Represents a unit suitable for timestamps which are compositions of date and time (PlainTimestamp).

Author:

Meno Hochschild

Method Summary

Modifier and Type	Method and Description
char	getSymbol() Gets the format symbol which is used to display this time unit in canonical representations of timespans.

Methods inherited from interface net.time4j.engine.ChronoUnit

getLength, isCalendrical

Method Detail

getSymbol

char getSymbol()

Gets the format symbol which is used to display this time unit in canonical representations of timespans.

Canonical timespan formats follow ISO-8601. For example, the day unit is represented by the symbol D. Note that the letters P and T must not be used because these special characters are for structuring, the display. In ISO-8601 following symbols are defined:

• Y - year
• M - month or minute
• W - week
• D - day
• H - hour
• S - second
• P - qualifies a timespan (period)
• T - separates date and time part

If this method yields as special case a digit 1-9 then Time4J expects a fractional display of preceding second unit S that is nanoseconds, microseconds and milliseconds. Time4J will use the comma as decimal separation char in the canonical display as recommended by ISO-8601 unless the system property "net.time4j.format.iso.decimal.dot" is set to true (which causes the usage of a dot).

Returns:

char (ASCII-NULL if undefined)

See Also:

Duration.toString()