org.djunits.quantity.Power

All Implemented Interfaces:: Serializable, Comparable<Power>, Additive<Power>, Scalable<Power>, Value<Power>

public class Power extends Quantity<Power>

Power is the rate of energy transfer or work done per unit time, measured in watts (W).

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

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type

Class

Description

static class

Power.Unit

Power.Unit encodes the units for the rate of energy transfer or work done per unit time.
Field Summary

Fields

Modifier and Type

Field

Description

static final Power

NaN

Constant with value NaN.

static final Power

NEG_MAXVALUE

Constant with value -MAX_VALUE.

static final Power

NEGATIVE_INFINITY

Constant with value NEGATIVE_INFINITY.

static final Power

ONE

Constant with value one.

static final Power

POS_MAXVALUE

Constant with value MAX_VALUE.

static final Power

POSITIVE_INFINITY

Constant with value POSITIVE_INFINITY.

static final Power

ZERO

Constant with value zero.

Fields inherited from class org.djunits.quantity.def.Quantity
si
Constructor Summary

Constructors

Constructor

Description

Power(double valueInUnit, Power.Unit unit)

Instantiate a Power quantity expressed in the given unit.

Power(double value, Power.Unit displayUnit, boolean useSi)

Instantiate a Power quantity with an SI or base value and a display unit.
Method Summary

Modifier and Type

Method

Description

Momentum

divide(Acceleration v)

Calculate the division of Power and Acceleration, which results in a Momentum scalar.

ElectricPotential

divide(ElectricCurrent v)

Calculate the division of Power and ElectricCurrent, which results in a ElectricPotential scalar.

ElectricCurrent

divide(ElectricPotential v)

Calculate the division of Power and ElectricPotential, which results in a ElectricCurrent scalar.

Frequency

divide(Energy v)

Calculate the division of Power and Energy, which results in a Frequency scalar.

Speed

divide(Force v)

Calculate the division of Power and Force, which results in a Speed scalar.

Energy

divide(Frequency v)

Calculate the division of Power and Frequency, which results in a Energy scalar.

Acceleration

divide(Momentum v)

Calculate the division of Power and Momentum, which results in a Acceleration scalar.

Dimensionless

divide(Power v)

Calculate the division of Power and Power, which results in a Dimensionless quantity.

Force

divide(Speed v)

Calculate the division of Power and Speed, which results in a Force scalar.

Power.Unit

getDisplayUnit()

Retrieve the unit of this Value.

Power

instantiateSi(double siValue, UnitInterface<Power> displayUnit)

Instantiate a quantity with an SI or base value, and a display unit.

Energy

multiply(Duration v)

Calculate the multiplication of Power and Duration, which results in a Energy scalar.

static Power

of(double valueInUnit, String unitString)

Returns a Power based on a value and the textual representation of the unit, which can be localized.

static Power

of(double valueInUnit, Power.Unit unit)

Returns a Power based on a value expressed in the unit.

static Power

ofSi(double si)

Return a Power instance based on an SI value.

static Power

ofSi(double siValue, Power.Unit displayUnit)

Instantiate a Power quantity with an SI or base value and a display unit.

static Power

valueOf(String text)

Returns a Power representation of a textual representation of a value with a unit.

Methods inherited from class org.djunits.quantity.def.Quantity
abs, add, as, compareTo, divide, doubleValue, eq, eq0, equals, floatValue, format, format, format, ge, ge0, getInUnit, getInUnit, getName, gt, gt0, hashCode, instantiate, instantiateSi, interpolate, intValue, isRelative, le, le0, longValue, lt, lt0, max, mean, min, multiply, ne, ne0, negate, of, product, reciprocal, scaleBy, si, siUnit, subtract, sum, toString, valueOf

Methods inherited from class java.lang.Number
byteValue, shortValue

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

Methods inherited from interface org.djunits.value.Scalable
divideBy

Methods inherited from interface org.djunits.value.Value
isAbsolute

Field Details
- ZERO
  
  public static final Power ZERO
  
  Constant with value zero.
- ONE
  
  public static final Power ONE
  
  Constant with value one.
- NaN
  
  public static final Power NaN
  
  Constant with value NaN.
- POSITIVE_INFINITY
  
  public static final Power POSITIVE_INFINITY
  
  Constant with value POSITIVE_INFINITY.
- NEGATIVE_INFINITY
  
  public static final Power NEGATIVE_INFINITY
  
  Constant with value NEGATIVE_INFINITY.
- POS_MAXVALUE
  
  public static final Power POS_MAXVALUE
  
  Constant with value MAX_VALUE.
- NEG_MAXVALUE
  
  public static final Power NEG_MAXVALUE
  
  Constant with value -MAX_VALUE.
Constructor Details
- Power
  
  public Power(double value, Power.Unit displayUnit, boolean useSi)
  
  Instantiate a Power quantity with an SI or base value and a display unit.
  
  Parameters:
  
  value - the quantity value expressed in the SI or base unit
  
  displayUnit - the display unit to use
  
  useSi - use SI value when true, use value in unit when false
- Power
  
  public Power(double valueInUnit, Power.Unit unit)
  
  Instantiate a Power quantity expressed in the given unit.
  
  Parameters:
  
  valueInUnit - the quantity value expressed in the given unit
  
  unit - the unit of the value, also acts as the display unit
Method Details
- ofSi
  
  public static Power ofSi(double si)
  
  Return a Power instance based on an SI value.
  
  Parameters:
  
  si - the si value
  
  Returns:
  
  the Power instance based on an SI value
- ofSi
  
  public static Power ofSi(double siValue, Power.Unit displayUnit)
  
  Instantiate a Power quantity with an SI or base value and a display unit.
  
  Parameters:
  
  siValue - the quantity value expressed in the SI or base unit
  
  displayUnit - the display unit to use
  
  Returns:
  
  the Power instance based on an SI value with the given display unit
- instantiateSi
  
  public Power instantiateSi(double siValue, UnitInterface<Power> displayUnit)
  
  Description copied from class: Quantity
  
  Instantiate a quantity with an SI or base value, and a display unit.
  
  Specified by:
  
  instantiateSi in class Quantity<Power>
  
  Parameters:
  
  siValue - the value expressed in the base (SI) unit
  
  displayUnit - the display unit to use for the quantity
  
  Returns:
  
  a quantity with the given SI or base value, and the given display unit
- valueOf
  
  public static Power valueOf(String text)
  
  Returns a Power representation of a textual representation of a value with a unit. The String representation that can be parsed is the double value in the unit, followed by a localized or English abbreviation of the unit. Spaces are allowed, but not required, between the value and the unit.
  
  Parameters:
  
  text - the textual representation to parse into a Power
  
  Returns:
  
  the Scalar representation of the value in its unit
  
  Throws:
  
  IllegalArgumentException - when the text cannot be parsed
  
  NullPointerException - when the text argument is null
- of
  
  public static Power of(double valueInUnit, Power.Unit unit)
  
  Returns a Power based on a value expressed in the unit.
  
  Parameters:
  
  valueInUnit - the value, expressed in the given unit
  
  unit - the unit of the value, also acts as the display unit
  
  Returns:
  
  ab Power representation of the value in its unit
- of
  
  public static Power of(double valueInUnit, String unitString)
  
  Returns a Power based on a value and the textual representation of the unit, which can be localized.
  
  Parameters:
  
  valueInUnit - the value, expressed in the unit as given by unitString
  
  unitString - the textual representation of the unit
  
  Returns:
  
  the Scalar representation of the value in its unit
  
  Throws:
  
  IllegalArgumentException - when the unit cannot be parsed or is incorrect
  
  NullPointerException - when the unitString argument is null
- getDisplayUnit
  
  public Power.Unit getDisplayUnit()
  
  Description copied from interface: Value
  
  Retrieve the unit of this Value.
  
  Specified by:
  
  getDisplayUnit in interface Value<Power>
  
  Overrides:
  
  getDisplayUnit in class Quantity<Power>
  
  Returns:
  
  the unit of this Value
- divide
  
  public Dimensionless divide(Power v)
  
  Calculate the division of Power and Power, which results in a Dimensionless quantity.
  
  Parameters:
  
  v - quantity
  
  Returns:
  
  quantity as a division of Power and Power
- multiply
  
  public Energy multiply(Duration v)
  
  Calculate the multiplication of Power and Duration, which results in a Energy scalar.
  
  Parameters:
  
  v - scalar
  
  Returns:
  
  scalar as a multiplication of Power and Duration
- divide
  
  public Energy divide(Frequency v)
  
  Calculate the division of Power and Frequency, which results in a Energy scalar.
  
  Parameters:
  
  v - scalar
  
  Returns:
  
  scalar as a division of Power and Frequency
- divide
  
  public Frequency divide(Energy v)
  
  Calculate the division of Power and Energy, which results in a Frequency scalar.
  
  Parameters:
  
  v - scalar
  
  Returns:
  
  scalar as a division of Power and Energy
- divide
  
  public Force divide(Speed v)
  
  Calculate the division of Power and Speed, which results in a Force scalar.
  
  Parameters:
  
  v - scalar
  
  Returns:
  
  scalar as a division of Power and Speed
- divide
  
  public Speed divide(Force v)
  
  Calculate the division of Power and Force, which results in a Speed scalar.
  
  Parameters:
  
  v - scalar
  
  Returns:
  
  scalar as a division of Power and Force
- divide
  
  public ElectricCurrent divide(ElectricPotential v)
  
  Calculate the division of Power and ElectricPotential, which results in a ElectricCurrent scalar.
  
  Parameters:
  
  v - scalar
  
  Returns:
  
  scalar as a division of Power and ElectricPotential
- divide
  
  public ElectricPotential divide(ElectricCurrent v)
  
  Calculate the division of Power and ElectricCurrent, which results in a ElectricPotential scalar.
  
  Parameters:
  
  v - scalar
  
  Returns:
  
  scalar as a division of Power and ElectricCurrent
- divide
  
  public Momentum divide(Acceleration v)
  
  Calculate the division of Power and Acceleration, which results in a Momentum scalar.
  
  Parameters:
  
  v - scalar
  
  Returns:
  
  scalar as a division of Power and Acceleration
- divide
  
  public Acceleration divide(Momentum v)
  
  Calculate the division of Power and Momentum, which results in a Acceleration scalar.
  
  Parameters:
  
  v - scalar
  
  Returns:
  
  scalar as a division of Power and Momentum

Class Power

Nested Class Summary

Field Summary

Fields inherited from class org.djunits.quantity.def.Quantity

Constructor Summary

Method Summary

Methods inherited from class org.djunits.quantity.def.Quantity

Methods inherited from class java.lang.Number

Methods inherited from class java.lang.Object

Methods inherited from interface org.djunits.value.Scalable

Methods inherited from interface org.djunits.value.Value

Field Details

ZERO

ONE

NaN

POSITIVE_INFINITY

NEGATIVE_INFINITY

POS_MAXVALUE

NEG_MAXVALUE

Constructor Details

Power

Power

Method Details

ofSi

ofSi

instantiateSi

valueOf

of

of

getDisplayUnit

divide

multiply

divide

divide

divide

divide

divide

divide

divide

divide