org.jeospace.measure
Class LengthUnit

java.lang.Object
  org.jeospace.measure.LengthUnit

public class LengthUnit

extends java.lang.Object

Constant object identifiers for the units of linear measure as represented by Length objects.

For reference see:
http://ts.nist.gov/ts/htdocs/230/235/h4402/appenc.pdf
which contains values and conversion factors for many non-SI forms of measurement.

http://www.unc.edu/~rowlett/units/index.html
which contains values and anecdotal information on many forms of measurement

Version:

$Revision: 1.1.1.1 $

Author:

Rex Melton

See Also:

Length

Field Summary

static LengthUnit	AU Constant identifier for astronomical units.
static LengthUnit	FOOT Constant identifier for units of feet.
static LengthUnit	INCH Constant identifier for units of inches.
static LengthUnit	LIGHTSECOND Constant identifier for units of lightseconds.
static LengthUnit	LIGHTYEAR Constant identifier for units of lightyears.
static LengthUnit	METER Constant identifier for units of meters.
double	meters The value of the unit of length in SI units (meters)
static LengthUnit	MILE Constant identifier for units of miles.
java.lang.String	name The name of the unit of length
static LengthUnit	NAUTICAL_MILE Constant identifier for units of nautical miles.
static LengthUnit	PARSEC Constant identifier for units of parsecs.
java.lang.String	symbol The symbol of the unit of length
static LengthUnit	YARD Constant identifier for units of yards.

Constructor Summary

protected

LengthUnit(java.lang.String name, java.lang.String symbol, double meters) Construct a LengthUnit object.

Method Summary

static LengthUnit[]	getLengthUnits() Return an array of the defined LengthUnit objects
java.lang.String	toString() Return a String representation ( the name String ) of this LengthUnit object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

METER

public static final LengthUnit METER

Constant identifier for units of meters.

INCH

public static final LengthUnit INCH

Constant identifier for units of inches.

FOOT

public static final LengthUnit FOOT

Constant identifier for units of feet.
FOOT = 12 inches

YARD

public static final LengthUnit YARD

Constant identifier for units of yards.
YARD = 3 feet

MILE

public static final LengthUnit MILE

Constant identifier for units of miles.
MILE = 1760 yards

NAUTICAL_MILE

public static final LengthUnit NAUTICAL_MILE

Constant identifier for units of nautical miles.

LIGHTSECOND

public static final LengthUnit LIGHTSECOND

Constant identifier for units of lightseconds.
reference: http://physics.nist.gov/cgi-bin/cuu/Value?c|search_for=nonsi_in!
reference: http://en.wikipedia.org/wiki/Speed_of_light

LIGHTYEAR

public static final LengthUnit LIGHTYEAR

Constant identifier for units of lightyears.
LIGHTYEAR = LightSecond * 31556925.9747 (s/yr)
reference: http://www.unc.edu/~rowlett/units/index.html
reference: http://en.wikipedia.org/wiki/Light_year

AU

public static final LengthUnit AU

Constant identifier for astronomical units.
or: http://www.unc.edu/~rowlett/units/index.html
reference: http://en.wikipedia.org/wiki/Astronomical_unit

PARSEC

public static final LengthUnit PARSEC

Constant identifier for units of parsecs.
PARSEC = 3.261631 * LightYear
reference: http://www.unc.edu/~rowlett/units/index.html
reference: http://en.wikipedia.org/wiki/Parsec

name

public final java.lang.String name

The name of the unit of length

symbol

public final java.lang.String symbol

The symbol of the unit of length

meters

public final double meters

The value of the unit of length in SI units (meters)

Constructor Detail

LengthUnit

protected LengthUnit(java.lang.String name,
                     java.lang.String symbol,
                     double meters)

Construct a LengthUnit object.

Parameters:

name - the unit of length's identifier

symbol - the unit of length's symbol

meters - the unit of length's value in meters

Method Detail

getLengthUnits

public static LengthUnit[] getLengthUnits()

Return an array of the defined LengthUnit objects

Returns:

the array of the defined LengthUnit objects

toString

public java.lang.String toString()

Return a String representation ( the name String ) of this LengthUnit object.

Returns:

a String representation of this LengthUnit object