Package org.djunits.quantity

Class AngularAcceleration

java.lang.Object

java.lang.Number

org.djunits.quantity.def.Quantity<AngularAcceleration>

org.djunits.quantity.AngularAcceleration

All Implemented Interfaces:

Serializable, Comparable<AngularAcceleration>, Additive<AngularAcceleration>, Scalable<AngularAcceleration>, Value<AngularAcceleration>

public class AngularAcceleration
extends Quantity<AngularAcceleration>

Angular acceleration is the rate of change of angular velocity over time, measured in radians per second squared (rad/s2).

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	AngularAcceleration.Unit	AngularAcceleration.Unit encodes the units of angle (radians or degrees per second squared).

Field Summary

Fields

Modifier and Type	Field	Description
static final AngularAcceleration	NaN	Constant with value NaN.
static final AngularAcceleration	NEG_MAXVALUE	Constant with value -MAX_VALUE.
static final AngularAcceleration	NEGATIVE_INFINITY	Constant with value NEGATIVE_INFINITY.
static final AngularAcceleration	ONE	Constant with value one.
static final AngularAcceleration	POS_MAXVALUE	Constant with value MAX_VALUE.
static final AngularAcceleration	POSITIVE_INFINITY	Constant with value POSITIVE_INFINITY.
static final AngularAcceleration	ZERO	Constant with value zero.

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

si

Constructor Summary

Constructors

Constructor	Description
AngularAcceleration(double valueInUnit, AngularAcceleration.Unit unit)	Instantiate a AngularAcceleration quantity expressed in the given unit.
AngularAcceleration(double value, AngularAcceleration.Unit displayUnit, boolean useSi)	Instantiate a AngularAcceleration quantity with an SI or base value and a display unit.

Method Summary

Modifier and Type	Method	Description
Dimensionless	divide(AngularAcceleration v)	Calculate the division of AngularAcceleration and AngularAcceleration, which results in a Dimensionless scalar.
Frequency	divide(AngularVelocity v)	Calculate the division of AngularAcceleration and AngularVelocity, which results in a Frequency scalar.
AngularVelocity	divide(Frequency v)	Calculate the division of AngularAcceleration and Frequency, which results in a AngularVelocity scalar.
AngularAcceleration.Unit	getDisplayUnit()	Retrieve the unit of this Value.
AngularAcceleration	instantiateSi(double siValue, UnitInterface<AngularAcceleration> displayUnit)	Instantiate a quantity with an SI or base value, and a display unit.
AngularVelocity	multiply(Duration v)	Calculate the multiplication of AngularAcceleration and Duration, which results in a AngularVelocity scalar.
static AngularAcceleration	of(double valueInUnit, String unitString)	Returns a AngularAcceleration based on a value and the textual representation of the unit, which can be localized.
static AngularAcceleration	of(double valueInUnit, AngularAcceleration.Unit unit)	Returns a AngularAcceleration based on a value expressed in the unit.
static AngularAcceleration	ofSi(double si)	Return a AngularAcceleration instance based on an SI value.
static AngularAcceleration	ofSi(double siValue, AngularAcceleration.Unit displayUnit)	Instantiate a AngularAcceleration quantity with an SI or base value and a display unit.
static AngularAcceleration	valueOf(String text)	Returns a AngularAcceleration 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 AngularAcceleration ZERO

Constant with value zero.

ONE

public static final AngularAcceleration ONE

Constant with value one.

NaN

public static final AngularAcceleration NaN

Constant with value NaN.

POSITIVE_INFINITY

public static final AngularAcceleration POSITIVE_INFINITY

Constant with value POSITIVE_INFINITY.

NEGATIVE_INFINITY

public static final AngularAcceleration NEGATIVE_INFINITY

Constant with value NEGATIVE_INFINITY.

POS_MAXVALUE

public static final AngularAcceleration POS_MAXVALUE

Constant with value MAX_VALUE.

NEG_MAXVALUE

public static final AngularAcceleration NEG_MAXVALUE

Constant with value -MAX_VALUE.

Constructor Details

AngularAcceleration

public AngularAcceleration(double value,
 AngularAcceleration.Unit displayUnit,
 boolean useSi)

Instantiate a AngularAcceleration 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

AngularAcceleration

public AngularAcceleration(double valueInUnit,
 AngularAcceleration.Unit unit)

Instantiate a AngularAcceleration 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 AngularAcceleration ofSi(double si)

Return a AngularAcceleration instance based on an SI value.

Parameters:

si - the si value

Returns:

the AngularAcceleration instance based on an SI value

ofSi

public static AngularAcceleration ofSi(double siValue,
 AngularAcceleration.Unit displayUnit)

Instantiate a AngularAcceleration 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 AngularAcceleration instance based on an SI value with the given display unit

instantiateSi

public AngularAcceleration instantiateSi(double siValue,
 UnitInterface<AngularAcceleration> 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<AngularAcceleration>

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 AngularAcceleration valueOf(String text)

Returns a AngularAcceleration 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 AngularAcceleration

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 AngularAcceleration of(double valueInUnit,
 AngularAcceleration.Unit unit)

Returns a AngularAcceleration 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 AngularAcceleration representation of the value in its unit

of

public static AngularAcceleration of(double valueInUnit,
 String unitString)

Returns a AngularAcceleration 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 AngularAcceleration.Unit getDisplayUnit()

Description copied from interface: Value

Retrieve the unit of this Value.

Specified by:

getDisplayUnit in interface Value<AngularAcceleration>

Overrides:

getDisplayUnit in class Quantity<AngularAcceleration>

Returns:

the unit of this Value

divide

public Dimensionless divide(AngularAcceleration v)

Calculate the division of AngularAcceleration and AngularAcceleration, which results in a Dimensionless scalar.

Parameters:

v - scalar

Returns:

scalar as a division of AngularAcceleration and AngularAcceleration

multiply

public AngularVelocity multiply(Duration v)

Calculate the multiplication of AngularAcceleration and Duration, which results in a AngularVelocity scalar.

Parameters:

v - scalar

Returns:

scalar as a multiplication of AngularAcceleration and Duration

divide

public AngularVelocity divide(Frequency v)

Calculate the division of AngularAcceleration and Frequency, which results in a AngularVelocity scalar.

Parameters:

v - scalar

Returns:

scalar as a division of AngularAcceleration and Frequency

divide

public Frequency divide(AngularVelocity v)

Calculate the division of AngularAcceleration and AngularVelocity, which results in a Frequency scalar.

Parameters:

v - scalar

Returns:

scalar as a division of AngularAcceleration and AngularVelocity