Package tech.units.indriya.unit
Class Units
- java.lang.Object
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- tech.units.indriya.AbstractSystemOfUnits
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- tech.units.indriya.unit.Units
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- All Implemented Interfaces:
javax.measure.spi.SystemOfUnits,tech.uom.lib.common.function.Nameable
public class Units extends AbstractSystemOfUnits
This class defines common units.
- Since:
- 1.0
- Version:
- 2.3.1, April 21, 2020
- Author:
- Werner Keil, Thodoris Bais
- See Also:
- USMA: Detailed list of metric system units, symbols, and prefixes
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Nested Class Summary
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Nested classes/interfaces inherited from class tech.units.indriya.AbstractSystemOfUnits
AbstractSystemOfUnits.Helper
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Field Summary
Fields Modifier and Type Field Description static javax.measure.Unit<javax.measure.quantity.ElectricCurrent>AMPEREThe ampere, symbol A, is the SI unit of electric current.static javax.measure.Unit<javax.measure.quantity.Radioactivity>BECQUERELThe SI unit for activity of a radionuclide (standard nameBq).static javax.measure.Unit<javax.measure.quantity.LuminousIntensity>CANDELAThe candela, symbol cd, is the SI unit of luminous intensity in a given direction.static javax.measure.Unit<javax.measure.quantity.Temperature>CELSIUSThe SI unit for Celsius temperature (standard name°C).static javax.measure.Unit<javax.measure.quantity.ElectricCharge>COULOMBThe SI unit for electric charge, quantity of electricity (standard nameC).static javax.measure.Unit<javax.measure.quantity.Volume>CUBIC_METREThe SI unit for volume quantities (standard namem3).static javax.measure.Unit<javax.measure.quantity.Time>DAYA time unit accepted for use with SI units (standard named).static javax.measure.Unit<javax.measure.quantity.ElectricCapacitance>FARADThe SI unit for capacitance (standard nameF).static javax.measure.Unit<javax.measure.quantity.Mass>GRAMThe SI derived unit for mass quantities (standard nameg).static javax.measure.Unit<javax.measure.quantity.RadiationDoseAbsorbed>GRAYThe SI unit for absorbed dose, specific energy (imparted), kerma (standard nameGy).static javax.measure.Unit<javax.measure.quantity.ElectricInductance>HENRYThe alternate unit for inductance (standard nameH).static javax.measure.Unit<javax.measure.quantity.Frequency>HERTZThe SI unit for frequency (standard nameHz).static javax.measure.Unit<javax.measure.quantity.Time>HOURA time unit accepted for use with SI units (standard nameh).static javax.measure.Unit<javax.measure.quantity.Energy>JOULEThe SI unit for energy, work, quantity of heat (J).static javax.measure.Unit<javax.measure.quantity.CatalyticActivity>KATALThe SI unit for catalytic activity (standard namekat).static javax.measure.Unit<javax.measure.quantity.Temperature>KELVINThe kelvin, symbol K, is the SI unit of thermodynamic temperature.static javax.measure.Unit<javax.measure.quantity.Mass>KILOGRAMThe kilogram, symbol kg, is the SI unit of mass.static javax.measure.Unit<javax.measure.quantity.Speed>KILOMETRE_PER_HOURstatic javax.measure.Unit<javax.measure.quantity.Volume>LITREA volume unit accepted for use with SI units (standard namel).static javax.measure.Unit<javax.measure.quantity.LuminousFlux>LUMENThe SI unit for luminous flux (standard namelm).static javax.measure.Unit<javax.measure.quantity.Illuminance>LUXThe SI unit for illuminance (standard namelx).static javax.measure.Unit<javax.measure.quantity.Length>METREThe metre, symbol m, is the SI unit of length.static javax.measure.Unit<javax.measure.quantity.Speed>METRE_PER_SECONDThe SI unit for velocity quantities (standard namem/s).static javax.measure.Unit<javax.measure.quantity.Acceleration>METRE_PER_SQUARE_SECONDThe SI unit for acceleration quantities (standard namem/s2).static javax.measure.Unit<javax.measure.quantity.Time>MINUTEA time unit accepted for use with SI units (standard namemin).static javax.measure.Unit<javax.measure.quantity.AmountOfSubstance>MOLEThe mole, symbol mol, is the SI unit of amount of substance.static javax.measure.Unit<javax.measure.quantity.Time>MONTHA unit of duration equal to 1/12YEAR(standard namemon).static javax.measure.Unit<javax.measure.quantity.Force>NEWTONThe SI unit for force (standard nameN).static javax.measure.Unit<javax.measure.quantity.ElectricResistance>OHMThe SI unit for electric resistance (standard nameOhm).static javax.measure.Unit<javax.measure.quantity.Pressure>PASCALThe SI unit for pressure, stress (standard namePa).static javax.measure.Unit<javax.measure.quantity.Dimensionless>PERCENTA dimensionless unit accepted for use with SI units (standard name%).static javax.measure.Unit<javax.measure.quantity.Angle>RADIANThe SI unit for plane angle quantities (standard namerad).static javax.measure.Unit<javax.measure.quantity.Time>SECONDThe second, symbol s, is the SI unit of time.static javax.measure.Unit<javax.measure.quantity.ElectricConductance>SIEMENSThe SI unit for electric conductance (standard nameS).static javax.measure.Unit<javax.measure.quantity.RadiationDoseEffective>SIEVERTThe SI unit for dose equivalent (standard nameSv).static javax.measure.Unit<javax.measure.quantity.Area>SQUARE_METREThe SI unit for area quantities (standard namem2).static javax.measure.Unit<javax.measure.quantity.SolidAngle>STERADIANThe SI unit for solid angle quantities (standard namesr).static javax.measure.Unit<javax.measure.quantity.MagneticFluxDensity>TESLAThe alternate unit for magnetic flux density (standard nameT).static javax.measure.Unit<javax.measure.quantity.ElectricPotential>VOLTThe SI unit for electric potential difference, electromotive force (standard nameV).static javax.measure.Unit<javax.measure.quantity.Power>WATTThe SI unit for power, radiant, flux (standard nameW).static javax.measure.Unit<javax.measure.quantity.MagneticFlux>WEBERThe SI unit for magnetic flux (standard nameWb).static javax.measure.Unit<javax.measure.quantity.Time>WEEKA unit of duration equal to 7DAY(standard namewk).static javax.measure.Unit<javax.measure.quantity.Time>YEARA time unit accepted for use with SI units (standard namey).-
Fields inherited from class tech.units.indriya.AbstractSystemOfUnits
E, logger, quantityToUnit, units
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Constructor Summary
Constructors Modifier Constructor Description protectedUnits()Constructor may only be called by subclasses
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Field Detail
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AMPERE
public static final javax.measure.Unit<javax.measure.quantity.ElectricCurrent> AMPERE
The ampere, symbol A, is the SI unit of electric current. It is defined by taking the fixed numerical value of the elementary charge e to be 1.602 176 634 × 10⁻¹⁹ when expressed in the unit C, which is equal to A s, where the second is defined in terms of ∆νCs. This definition implies the exact relation e = 1.602 176 634 × 10⁻¹⁹ A s. Inverting this relation gives an exact expression for the unit ampere in terms of the defining constants e and ∆νCs: 1 A = (e / 1.602 176 634 × 10⁻¹⁹) s⁻¹
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CANDELA
public static final javax.measure.Unit<javax.measure.quantity.LuminousIntensity> CANDELA
The candela, symbol cd, is the SI unit of luminous intensity in a given direction. It is defined by taking the fixed numerical value of the luminous efficacy of monochromatic radiation of frequency 540 × 10¹² Hz, Kcd, to be 683 when expressed in the unit lm W−1, which is equal to cd sr W⁻¹, or cd sr kg⁻¹ m⁻² s³, where the kilogram, metre and second are defined in terms of h, c and ∆νCs. This definition implies the exact relation Kcd = 683 cd sr kg⁻¹ m⁻² s³ for monochromatic radiation of frequency ν = 540 × 10¹² Hz. Inverting this relation gives an exact expression for the candela in terms of the defining constants Kcd, h and ∆νCs: 1 cd = (Kcd / 683) kg m² s⁻³ sr⁻¹- See Also:
- Wikipedia: Candela
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KELVIN
public static final javax.measure.Unit<javax.measure.quantity.Temperature> KELVIN
The kelvin, symbol K, is the SI unit of thermodynamic temperature. It is defined by taking the fixed numerical value of the Boltzmann constant k to be 1.380 649 × 10−²³ when expressed in the unit J K⁻¹, which is equal to kg m² s⁻² K⁻¹, where the kilogram, metre and second are defined in terms of h, c and ∆νCs. This definition implies the exact relation k = 1.380 649 × 10⁻²³ kg m² s⁻² K⁻¹. Inverting this relation gives an exact expression for the kelvin in terms of the defining constants k, h and ∆νCs: 1 K = (1.380 649 / k) × 10⁻²³ kg m² s⁻²- See Also:
JOULE
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KILOGRAM
public static final javax.measure.Unit<javax.measure.quantity.Mass> KILOGRAM
The kilogram, symbol kg, is the SI unit of mass. It is defined by taking the fixed numerical value of the Planck constant h to be 6.626 070 15 × 10⁻³⁴ when expressed in the unit J s, which is equal to kg m² s−1, where the metre and the second are defined in terms of c and ∆νCs. This definition implies the exact relation h = 6.626 070 15 × 10−34 kg m² s⁻¹. Inverting this relation gives an exact expression for the kilogram in terms of the three defining constants h, ∆νCs and c: 1 kg = (h / 6.626 070 15 × 10⁻³⁴) m⁻² s- See Also:
- Wikipedia: Kilogram,
GRAM,METRE,SECOND
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METRE
public static final javax.measure.Unit<javax.measure.quantity.Length> METRE
The metre, symbol m, is the SI unit of length. It is defined by taking the fixed numerical value of the speed of light in vacuum c to be 299 792 458 when expressed in the unit m s⁻¹, where the second is defined in terms of the caesium frequency ∆νCs. This definition implies the exact relation c = 299 792 458 m s⁻¹. Inverting this relation gives an exact expression for the metre in terms of the defining constants c and ∆νCs: 1 m = (c / 299 792 458)s = 9 192 631 770 c / 299 792 458 ∆νCs ≈ 30.663 319 c / ∆νCs
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MOLE
public static final javax.measure.Unit<javax.measure.quantity.AmountOfSubstance> MOLE
The mole, symbol mol, is the SI unit of amount of substance. One mole contains exactly 6.022 140 76 × 10²³ elementary entities. This number is the fixed numerical value of the Avogadro constant, NA, when expressed in the unit mol⁻¹ and is called the Avogadro number. The amount of substance, symbol n, of a system is a measure of the number of specified elementary entities. An elementary entity may be an atom, a molecule, an ion, an electron, any other particle or specified group of particles. This definition implies the exact relation Nₐ = 6.022 140 76 × 10²³ mol⁻¹. Inverting this relation gives an exact expression for the mole in terms of the defining constant NA: 1 mol = 6.02214076 × 10²³ / Nₐ
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SECOND
public static final javax.measure.Unit<javax.measure.quantity.Time> SECOND
The second, symbol s, is the SI unit of time. It is defined by taking the fixed numerical value of the caesium frequency ∆νCs, the unperturbed ground-state hyperfine transition frequency of the caesium 133 atom, to be 9 192 631 770 when expressed in the unit Hz, which is equal to s⁻¹. This definition implies the exact relation ∆νCs = 9 192 631 770 Hz. Inverting this relation gives an expression for the unit second in terms of the defining constant ∆νCs: 1 Hz = ∆νCs / 9 192 631 770 or 1 s = 9 192 631 770 / ∆νCs
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GRAM
public static final javax.measure.Unit<javax.measure.quantity.Mass> GRAM
The SI derived unit for mass quantities (standard nameg). The base unit for mass quantity isKILOGRAM.
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RADIAN
public static final javax.measure.Unit<javax.measure.quantity.Angle> RADIAN
The SI unit for plane angle quantities (standard namerad). One radian is the angle between two radii of a circle such that the length of the arc between them is equal to the radius.
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STERADIAN
public static final javax.measure.Unit<javax.measure.quantity.SolidAngle> STERADIAN
The SI unit for solid angle quantities (standard namesr). One steradian is the solid angle subtended at the center of a sphere by an area on the surface of the sphere that is equal to the radius squared. The total solid angle of a sphere is 4*Pi steradians.
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HERTZ
public static final javax.measure.Unit<javax.measure.quantity.Frequency> HERTZ
The SI unit for frequency (standard nameHz). A unit of frequency equal to one cycle per second. After Heinrich Rudolf Hertz (1857-1894), German physicist who was the first to produce radio waves artificially.
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NEWTON
public static final javax.measure.Unit<javax.measure.quantity.Force> NEWTON
The SI unit for force (standard nameN). One newton is the force required to give a mass of 1 kilogram an Force of 1 metre per second per second. It is named after the English mathematician and physicist Sir Isaac Newton (1642-1727).
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PASCAL
public static final javax.measure.Unit<javax.measure.quantity.Pressure> PASCAL
The SI unit for pressure, stress (standard namePa). One pascal is equal to one newton per square meter. It is named after the French philosopher and mathematician Blaise Pascal (1623-1662).
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JOULE
public static final javax.measure.Unit<javax.measure.quantity.Energy> JOULE
The SI unit for energy, work, quantity of heat (J). One joule is the amount of work done when an applied force of 1 newton moves through a distance of 1 metre in the direction of the force. It is named after the English physicist James Prescott Joule (1818-1889).
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WATT
public static final javax.measure.Unit<javax.measure.quantity.Power> WATT
The SI unit for power, radiant, flux (standard nameW). One watt is equal to one joule per second. It is named after the British scientist James Watt (1736-1819).
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COULOMB
public static final javax.measure.Unit<javax.measure.quantity.ElectricCharge> COULOMB
The SI unit for electric charge, quantity of electricity (standard nameC). One Coulomb is equal to the quantity of charge transferred in one second by a steady current of one ampere. It is named after the French physicist Charles Augustin de Coulomb (1736-1806).
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VOLT
public static final javax.measure.Unit<javax.measure.quantity.ElectricPotential> VOLT
The SI unit for electric potential difference, electromotive force (standard nameV). One Volt is equal to the difference of electric potential between two points on a conducting wire carrying a constant current of one ampere when the power dissipated between the points is one watt. It is named after the Italian physicist Count Alessandro Volta (1745-1827).
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FARAD
public static final javax.measure.Unit<javax.measure.quantity.ElectricCapacitance> FARAD
The SI unit for capacitance (standard nameF). One Farad is equal to the capacitance of a capacitor having an equal and opposite charge of 1 coulomb on each plate and a potential difference of 1 volt between the plates. It is named after the British physicist and chemist Michael Faraday (1791-1867).
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OHM
public static final javax.measure.Unit<javax.measure.quantity.ElectricResistance> OHM
The SI unit for electric resistance (standard nameOhm). One Ohm is equal to the resistance of a conductor in which a current of one ampere is produced by a potential of one volt across its terminals. It is named after the German physicist Georg Simon Ohm (1789-1854).
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SIEMENS
public static final javax.measure.Unit<javax.measure.quantity.ElectricConductance> SIEMENS
The SI unit for electric conductance (standard nameS). One Siemens is equal to one ampere per volt. It is named after the German engineer Ernst Werner von Siemens (1816-1892).
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WEBER
public static final javax.measure.Unit<javax.measure.quantity.MagneticFlux> WEBER
The SI unit for magnetic flux (standard nameWb). One Weber is equal to the magnetic flux that in linking a circuit of one turn produces in it an electromotive force of one volt as it is uniformly reduced to zero within one second. It is named after the German physicist Wilhelm Eduard Weber (1804-1891).
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TESLA
public static final javax.measure.Unit<javax.measure.quantity.MagneticFluxDensity> TESLA
The alternate unit for magnetic flux density (standard nameT). One Tesla is equal equal to one weber per square metre. It is named after the Serbian-born American electrical engineer and physicist Nikola Tesla (1856-1943).
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HENRY
public static final javax.measure.Unit<javax.measure.quantity.ElectricInductance> HENRY
The alternate unit for inductance (standard nameH). One Henry is equal to the inductance for which an induced electromotive force of one volt is produced when the current is varied at the rate of one ampere per second. It is named after the American physicist Joseph Henry (1791-1878).
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CELSIUS
public static final javax.measure.Unit<javax.measure.quantity.Temperature> CELSIUS
The SI unit for Celsius temperature (standard name°C). This is a unit of temperature such as the freezing point of water (at one atmosphere of pressure) is 0 °C, while the boiling point is 100 °C.
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LUMEN
public static final javax.measure.Unit<javax.measure.quantity.LuminousFlux> LUMEN
The SI unit for luminous flux (standard namelm). One Lumen is equal to the amount of light given out through a solid angle by a source of one candela intensity radiating equally in all directions.
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LUX
public static final javax.measure.Unit<javax.measure.quantity.Illuminance> LUX
The SI unit for illuminance (standard namelx). One Lux is equal to one lumen per square metre.
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BECQUEREL
public static final javax.measure.Unit<javax.measure.quantity.Radioactivity> BECQUEREL
The SI unit for activity of a radionuclide (standard nameBq). One becquerel is the radiation caused by one disintegration per second. It is named after the French physicist, Antoine-Henri Becquerel (1852-1908).
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GRAY
public static final javax.measure.Unit<javax.measure.quantity.RadiationDoseAbsorbed> GRAY
The SI unit for absorbed dose, specific energy (imparted), kerma (standard nameGy). One gray is equal to the dose of one joule of energy absorbed per one kilogram of matter. It is named after the British physician L. H. Gray (1905-1965).
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SIEVERT
public static final javax.measure.Unit<javax.measure.quantity.RadiationDoseEffective> SIEVERT
The SI unit for dose equivalent (standard nameSv). One Sievert is equal is equal to the actual dose, in grays, multiplied by a "quality factor" which is larger for more dangerous forms of radiation. It is named after the Swedish physicist Rolf Sievert (1898-1966).
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KATAL
public static final javax.measure.Unit<javax.measure.quantity.CatalyticActivity> KATAL
The SI unit for catalytic activity (standard namekat).
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METRE_PER_SECOND
public static final javax.measure.Unit<javax.measure.quantity.Speed> METRE_PER_SECOND
The SI unit for velocity quantities (standard namem/s).
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METRE_PER_SQUARE_SECOND
public static final javax.measure.Unit<javax.measure.quantity.Acceleration> METRE_PER_SQUARE_SECOND
The SI unit for acceleration quantities (standard namem/s2).
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SQUARE_METRE
public static final javax.measure.Unit<javax.measure.quantity.Area> SQUARE_METRE
The SI unit for area quantities (standard namem2).
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CUBIC_METRE
public static final javax.measure.Unit<javax.measure.quantity.Volume> CUBIC_METRE
The SI unit for volume quantities (standard namem3).
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KILOMETRE_PER_HOUR
public static final javax.measure.Unit<javax.measure.quantity.Speed> KILOMETRE_PER_HOUR
- See Also:
- Wikipedia: Kilometres per hour
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PERCENT
public static final javax.measure.Unit<javax.measure.quantity.Dimensionless> PERCENT
A dimensionless unit accepted for use with SI units (standard name%).
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MINUTE
public static final javax.measure.Unit<javax.measure.quantity.Time> MINUTE
A time unit accepted for use with SI units (standard namemin).
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HOUR
public static final javax.measure.Unit<javax.measure.quantity.Time> HOUR
A time unit accepted for use with SI units (standard nameh).
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DAY
public static final javax.measure.Unit<javax.measure.quantity.Time> DAY
A time unit accepted for use with SI units (standard named).
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WEEK
public static final javax.measure.Unit<javax.measure.quantity.Time> WEEK
A unit of duration equal to 7DAY(standard namewk).
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YEAR
public static final javax.measure.Unit<javax.measure.quantity.Time> YEAR
A time unit accepted for use with SI units (standard namey).
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MONTH
public static final javax.measure.Unit<javax.measure.quantity.Time> MONTH
A unit of duration equal to 1/12YEAR(standard namemon).- Since:
- 2.3
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LITRE
public static final javax.measure.Unit<javax.measure.quantity.Volume> LITRE
A volume unit accepted for use with SI units (standard namel).- See Also:
- Wikipedia: Litre
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Constructor Detail
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Units
protected Units()
Constructor may only be called by subclasses
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Method Detail
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getName
public String getName()
- Specified by:
getNamein interfacetech.uom.lib.common.function.Nameable- Specified by:
getNamein interfacejavax.measure.spi.SystemOfUnits- Specified by:
getNamein classAbstractSystemOfUnits
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getInstance
public static Units getInstance()
Returns the unique instance of this class.- Returns:
- the Units instance.
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