org.jscience.physics.quantities
Class Area

java.lang.Object
  javolution.realtime.RealtimeObject
      org.jscience.mathematics.numbers.Number<Quantity>
          org.jscience.physics.quantities.Quantity
              org.jscience.physics.quantities.Area

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<Quantity>, Realtime, Operable<Quantity>, Numeric<Quantity>

public class Area
extends Quantity

This class represents the extent of a planar region or of the surface of a solid measured in square units. The system unit for this quantity is "m²".

Version:

1.0, October 24, 2004

Author:

Jean-Marie Dautelle

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.jscience.physics.quantities.Quantity

Quantity.Factory<Q extends Quantity>

Nested classes/interfaces inherited from interface javolution.realtime.Realtime

Realtime.ObjectSpace

Field Summary

static Area

ZERO Represents a Area amounting to nothing.

Constructor Summary

protected

Area() Default constructor (allows for derivation).

Method Summary

static void	showAs(Unit unit) Shows Area instances in the specified unit.
static Area	valueOf(Length radius, Angle theta) Returns the area of a circle sector (slice of a circle).

Methods inherited from class org.jscience.physics.quantities.Quantity

approxEquals, compareTo, divide, doubleValue, equals, getAbsoluteError, getAmount, getMaximum, getMinimum, getRelativeError, getUnit, hashCode, isLargerThan, longValue, minus, norm, opposite, plus, rangeOf, reciprocal, root, sqrt, times, times, to, toText, valueOf, valueOf, valueOf

Methods inherited from class org.jscience.mathematics.numbers.Number

abs, byteValue, divide, floatValue, intValue, inverse, isGreaterThan, isLessThan, pow, shortValue

Methods inherited from class javolution.realtime.RealtimeObject

export, move, moveHeap, preserve, recycle, toString, unpreserve

Methods inherited from class java.lang.Object

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

Methods inherited from interface javolution.realtime.Realtime

move

Field Detail

ZERO

public static final Area ZERO

Represents a Area amounting to nothing.

Constructor Detail

Area

protected Area()

Default constructor (allows for derivation).

Method Detail

showAs

public static void showAs(Unit unit)

Shows Area instances in the specified unit.

Parameters:

unit - the display unit for Area instances.

valueOf

public static Area valueOf(Length radius,
                           Angle theta)

Returns the area of a circle sector (slice of a circle).

Parameters:

radius - the circle radius.

theta - the central angle.

Returns:

the area of the specified circle sector.