com.dautelle.physics
Class Mass

java.lang.Object
  java.lang.Number
      com.dautelle.math.numbers.RealtimeNumber
          com.dautelle.physics.Quantity
              com.dautelle.physics.Mass

All Implemented Interfaces:

java.lang.Comparable, Operable, Realtime, Representable, java.io.Serializable

public class Mass

extends Quantity

This class represents the measure of the quantity of matter that a body or an object contains. The mass of the body is not dependent on gravity and therefore is different from but proportional to its weight. The system unit for this quantity is "kg" (Système International d'Unités).

Version:

4.1, February 10, 2003

Author:

Jean-Marie Dautelle

See Also:

Serialized Form

Nested Class Summary

Nested classes inherited from class com.dautelle.physics.Quantity

Quantity.Factory, Quantity.Value

Field Summary

static Mass	DEUTERON Holds the deuteron rest mass.
static Mass	ELECTRON Holds the electron rest mass.
static Mass	MUON Holds the muon rest mass.
static Mass	NEUTRON Holds the neutron rest mass.
static Mass	PROTON Holds the proton rest mass.
static Mass	ZERO Represents a Mass amounting to nothing.

Constructor Summary

protected

Mass() Default constructor (allows for derivation).

Method Summary

static Mass	massOf(Quantity quantity) Returns the Mass corresponding to the specified quantity.
static void	showAs(Unit unit) Shows Mass instances in the specified unit.

Methods inherited from class com.dautelle.physics.Quantity

abs, add, appendTo, approxEquals, approxEquals, compareTo, divide, divide, doubleValue, doubleValue, equals, floatValue, floatValue, getAbsoluteError, getMaximum, getMinimum, getOutputUnit, getRelativeError, getSystemUnit, hashCode, intValue, intValue, inverse, isPossiblyZero, longValue, longValue, multiply, multiply, negate, opposite, plus, pow, random, reciprocal, root, subtract, times, toString, toString, toXml, valueOf, valueOf, valueOf, valueOf

Methods inherited from class com.dautelle.math.numbers.RealtimeNumber

clone, export, isLocalObject, isPoolObject, pow, recycle, toHeap

Methods inherited from class java.lang.Number

byteValue, shortValue

Methods inherited from class java.lang.Object

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

Field Detail

ZERO

public static final Mass ZERO

Represents a Mass amounting to nothing.

ELECTRON

public static final Mass ELECTRON

Holds the electron rest mass.

PROTON

public static final Mass PROTON

Holds the proton rest mass.

NEUTRON

public static final Mass NEUTRON

Holds the neutron rest mass.

DEUTERON

public static final Mass DEUTERON

Holds the deuteron rest mass.

MUON

public static final Mass MUON

Holds the muon rest mass.

Constructor Detail

Mass

protected Mass()

Default constructor (allows for derivation).

Method Detail

massOf

public static Mass massOf(Quantity quantity)

Returns the Mass corresponding to the specified quantity.

Parameters:

quantity - a quantity compatible with Mass.

Returns:

the specified quantity or a new Mass instance.

Throws:

ConversionException - if the current model does not allow the specified quantity to be converted to Mass.

showAs

public static void showAs(Unit unit)

Shows Mass instances in the specified unit.

Parameters:

unit - the output unit for Mass instances.

See Also:

Quantity.getOutputUnit()