Package org.djunits.quantity

Class CatalyticActivity

java.lang.Object

java.lang.Number

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

org.djunits.quantity.CatalyticActivity

All Implemented Interfaces:

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

public class CatalyticActivity
extends Quantity<CatalyticActivity>

Catalytic Activty is the rate of catalytic reaction per unit amount of catalyst, and is expressed in katal (kat), which is mol/s.

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	CatalyticActivity.Unit	CatalyticActivity.Unit encodes the units of the speed of a chamical reaction, and is expressed in mol/s.

Field Summary

Fields

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

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

si

Constructor Summary

Constructors

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

Method Summary

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

Constant with value zero.

ONE

public static final CatalyticActivity ONE

Constant with value one.

NaN

public static final CatalyticActivity NaN

Constant with value NaN.

POSITIVE_INFINITY

public static final CatalyticActivity POSITIVE_INFINITY

Constant with value POSITIVE_INFINITY.

NEGATIVE_INFINITY

public static final CatalyticActivity NEGATIVE_INFINITY

Constant with value NEGATIVE_INFINITY.

POS_MAXVALUE

public static final CatalyticActivity POS_MAXVALUE

Constant with value MAX_VALUE.

NEG_MAXVALUE

public static final CatalyticActivity NEG_MAXVALUE

Constant with value -MAX_VALUE.

Constructor Details

CatalyticActivity

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

Instantiate a CatalyticActivity 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

CatalyticActivity

public CatalyticActivity(double valueInUnit,
 CatalyticActivity.Unit unit)

Instantiate a CatalyticActivity 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 CatalyticActivity ofSi(double si)

Return a CatalyticActivity instance based on an SI value.

Parameters:

si - the si value

Returns:

the CatalyticActivity instance based on an SI value

ofSi

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

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

instantiateSi

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

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 CatalyticActivity valueOf(String text)

Returns a CatalyticActivity 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 CatalyticActivity

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 CatalyticActivity of(double valueInUnit,
 CatalyticActivity.Unit unit)

Returns a CatalyticActivity 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 CatalyticActivity representation of the value in its unit

of

public static CatalyticActivity of(double valueInUnit,
 String unitString)

Returns a CatalyticActivity 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 CatalyticActivity.Unit getDisplayUnit()

Description copied from interface: Value

Retrieve the unit of this Value.

Specified by:

getDisplayUnit in interface Value<CatalyticActivity>

Overrides:

getDisplayUnit in class Quantity<CatalyticActivity>

Returns:

the unit of this Value

divide

public Dimensionless divide(CatalyticActivity v)

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

Parameters:

v - quantity

Returns:

quantity as a division of CatalyticActivity and CatalyticActivity

multiply

public AmountOfSubstance multiply(Duration v)

Calculate the multiplication of CatalyticActivity and Duration, which results in a AmountOfSubstance scalar.

Parameters:

v - scalar

Returns:

scalar as a multiplication of CatalyticActivity and Duration

divide

public Frequency divide(AmountOfSubstance v)

Calculate the division of CatalyticActivity and AmountOfSubstance, which results in a Frequency scalar.

Parameters:

v - scalar

Returns:

scalar as a division of CatalyticActivity and AmountOfSubstance

divide

public AmountOfSubstance divide(Frequency v)

Calculate the division of CatalyticActivity and Frequency, which results in a AmountOfSubstance scalar.

Parameters:

v - scalar

Returns:

scalar as a division of CatalyticActivity and Frequency