Package org.djunits.quantity.def

Class PerMass

java.lang.Object

java.lang.Number

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

org.djunits.quantity.def.PerMass

All Implemented Interfaces:

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

public class PerMass
extends Quantity<PerMass>

PerMass is a test class for the per-kilo SI units.

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	PerMass.Unit	PerMass.Unit encodes the unit of the PerMass quantity.

Field Summary

Fields

Modifier and Type	Field	Description
static final PerMass	ONE	Constant with value one.
static final PerMass	ZERO	Constant with value zero.

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

si

Constructor Summary

Constructors

Constructor	Description
PerMass(double valueInUnit, String abbreviation)	Instantiate a Mass quantity with a unit, expressed as a String.
PerMass(double valueInUnit, PerMass.Unit unit)	Instantiate a Mass quantity with a unit.
PerMass(PerMass value)	Construct Mass quantity.

Method Summary

Modifier and Type	Method	Description
PerMass.Unit	getDisplayUnit()
PerMass	instantiateSi(double si)
static PerMass	of(double valueInUnit, String unitString)	Returns a Mass based on a value and the textual representation of the unit, which can be localized.
static PerMass	ofSi(double si)	Return a Mass instance based on an SI value.
SIUnit	siUnit()
static PerMass	valueOf(String text)	Returns a Mass 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, interpolate, intValue, isRelative, le, le0, longValue, lt, lt0, max, mean, min, multiply, ne, ne0, negate, of, product, reciprocal, scaleBy, setDisplayUnit, si, 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, setDisplayUnit

Field Details

ZERO

public static final PerMass ZERO

Constant with value zero.

ONE

public static final PerMass ONE

Constant with value one.

Constructor Details

PerMass

public PerMass(double valueInUnit,
 PerMass.Unit unit)

Instantiate a Mass quantity with a unit.

Parameters:

valueInUnit - the value, expressed in the unit

unit - the unit in which the value is expressed

PerMass

public PerMass(double valueInUnit,
 String abbreviation)

Instantiate a Mass quantity with a unit, expressed as a String.

Parameters:

valueInUnit - the value, expressed in the unit

abbreviation - the String abbreviation of the unit in which the value is expressed

PerMass

public PerMass(PerMass value)

Construct Mass quantity.

Parameters:

value - Scalar from which to construct this instance

Method Details

ofSi

public static PerMass ofSi(double si)

Return a Mass instance based on an SI value.

Parameters:

si - the si value

Returns:

the Mass instance based on an SI value

instantiateSi

public PerMass instantiateSi(double si)

Specified by:

instantiateSi in class Quantity<PerMass>

siUnit

public SIUnit siUnit()

Overrides:

siUnit in class Quantity<PerMass>

valueOf

public static PerMass valueOf(String text)

Returns a Mass 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 Mass

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 PerMass of(double valueInUnit,
 String unitString)

Returns a Mass 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 PerMass.Unit getDisplayUnit()

Specified by:

getDisplayUnit in interface Value<PerMass,PerMass>

Overrides:

getDisplayUnit in class Quantity<PerMass>