Package org.djunits.quantity

Class Temperature.Unit

java.lang.Object

org.djunits.unit.AbstractUnit<Temperature.Unit,TemperatureDifference>

org.djunits.quantity.Temperature.Unit

All Implemented Interfaces:

UnitInterface<Temperature.Unit,TemperatureDifference>

Enclosing class:

Temperature

public static class Temperature.Unit
extends AbstractUnit<Temperature.Unit,TemperatureDifference>

Temperature.Unit encodes the units of relative and absolute temperature. Note that he reference is not initialized immediately for the units, since Reference needs working units to initialize itself. Therefore, references will be allocated when an reference is retrieved for the first time.

Copyright (c) 2025-2026 Delft University of Technology, Jaffalaan 5, 2628 BX Delft, the Netherlands. All rights reserved. See for project information https://djunits.org. The DJUNITS project is distributed under a three-clause BSD-style license.

Author:

Alexander Verbraeck

Field Summary

Fields

Modifier and Type	Field	Description
static final Temperature.Unit	degC	Degree Celsius.
static final Temperature.Unit	degF	Degree Fahrenheit.
static final Temperature.Unit	degR	Degree Rankine.
static final Temperature.Unit	degRe	Degree Reaumur.
static final Temperature.Unit	K	Kelvin.
static final Temperature.Unit	SI	The SI or BASE unit.
static final SIUnit	SI_UNIT	The dimensions of temperature: K.

Constructor Summary

Constructors

Constructor	Description
Unit(String id, String name, double scaleFactorToBaseUnit, UnitSystem unitSystem)	Create a new Temperature unit.
Unit(String textualAbbreviation, String displayAbbreviation, String name, Scale scale, UnitSystem unitSystem)	Return a derived unit for this unit, with textual abbreviation(s) and a display abbreviation.

Method Summary

Modifier and Type	Method	Description
Temperature.Unit	deriveUnit(String textualAbbreviation, String displayAbbreviation, String name, double scaleFactor, UnitSystem unitSystem)	Return a linearly scaled derived unit for this unit, with textual abbreviation(s) and a display abbreviation.
Temperature.Unit	getBaseUnit()	Return the base unit for this unit.
protected Temperature.Reference	getReference()	Return the default reference for this unit.
TemperatureDifference	ofSi(double si)	Return an SI-quantity for this unit with a value.
SIUnit	siUnit()	Return the SI unit for this unit.

Methods inherited from class org.djunits.unit.AbstractUnit

deriveUnit, equals, generateSiPrefixes, getDisplayAbbreviation, getId, getName, getScale, getSiPrefix, getStoredDisplayAbbreviation, getStoredName, getStoredTextualAbbreviation, getTextualAbbreviation, getUnitSystem, hashCode, setSiPrefix, setSiPrefix, setSiPrefixKilo, setSiPrefixPer, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.djunits.unit.UnitInterface

fromBaseValue, quantityInUnit, toBaseValue

Field Details

SI_UNIT

public static final SIUnit SI_UNIT

The dimensions of temperature: K.

K

public static final Temperature.Unit K

Kelvin.

SI

public static final Temperature.Unit SI

The SI or BASE unit.

degC

public static final Temperature.Unit degC

Degree Celsius.

degF

public static final Temperature.Unit degF

Degree Fahrenheit.

degR

public static final Temperature.Unit degR

Degree Rankine.

degRe

public static final Temperature.Unit degRe

Degree Reaumur.

Constructor Details

Unit

public Unit(String id,
 String name,
 double scaleFactorToBaseUnit,
 UnitSystem unitSystem)

Create a new Temperature unit.

Parameters:

id - the id or main abbreviation of the unit

name - the full name of the unit

scaleFactorToBaseUnit - the scale factor of the unit to convert it TO the base (SI) unit

unitSystem - the unit system such as SI or IMPERIAL

Unit

public Unit(String textualAbbreviation,
 String displayAbbreviation,
 String name,
 Scale scale,
 UnitSystem unitSystem)

Return a derived unit for this unit, with textual abbreviation(s) and a display abbreviation.

Parameters:

textualAbbreviation - the textual abbreviation of the unit, which doubles as the id

displayAbbreviation - the display abbreviation of the unit

name - the full name of the unit

scale - the scale to use to convert between this unit and the standard (e.g., SI, BASE) unit

unitSystem - unit system, e.g. SI or Imperial

Method Details

getReference

protected Temperature.Reference getReference()

Return the default reference for this unit. References are assigned lazily and safely (once) to avoid circular class initialization issues.

Returns:

the reference for an absolute temperature

siUnit

public SIUnit siUnit()

Description copied from interface: UnitInterface

Return the SI unit for this unit.

Returns:

the SI unit for this unit

getBaseUnit

public Temperature.Unit getBaseUnit()

Description copied from interface: UnitInterface

Return the base unit for this unit.

Returns:

the base unit for this unit

ofSi

public TemperatureDifference ofSi(double si)

Description copied from interface: UnitInterface

Return an SI-quantity for this unit with a value.

Parameters:

si - the value in SI or BASE units

Returns:

an SI-quantity for this unit with the given si-value

deriveUnit

public Temperature.Unit deriveUnit(String textualAbbreviation,
 String displayAbbreviation,
 String name,
 double scaleFactor,
 UnitSystem unitSystem)

Description copied from class: AbstractUnit

Return a linearly scaled derived unit for this unit, with textual abbreviation(s) and a display abbreviation.

Specified by:

deriveUnit in class AbstractUnit<Temperature.Unit,TemperatureDifference>

Parameters:

textualAbbreviation - the textual abbreviation of the unit, which doubles as the id

displayAbbreviation - the display abbreviation of the unit

name - the full name of the unit

scaleFactor - the (linear) scale factor to multiply with the current (linear) scale factor

unitSystem - unit system, e.g. SI or Imperial

Returns:

a derived unit for this unit