Class Units

  • All Implemented Interfaces:
    javax.measure.spi.SystemOfUnits, tech.uom.lib.common.function.Nameable

    public class Units
    extends AbstractSystemOfUnits
    implements tech.uom.lib.common.function.Nameable

    This class defines commonly used units.

    Since:
    1.0
    Version:
    1.1, April 22, 2018
    • Field Summary

      Fields 
      Modifier and Type Field Description
      static javax.measure.Unit<javax.measure.quantity.ElectricCurrent> AMPERE
      The SI base unit for electric current quantities (standard name A).
      static javax.measure.Unit<javax.measure.quantity.Radioactivity> BECQUEREL
      The SI unit for activity of a radionuclide (standard name Bq ).
      static javax.measure.Unit<javax.measure.quantity.LuminousIntensity> CANDELA
      The SI base unit for luminous intensity quantities (standard name cd).
      static AbstractUnit<javax.measure.quantity.Temperature> CELSIUS
      The SI unit for Celsius temperature (standard name Cel).
      static javax.measure.Unit<javax.measure.quantity.ElectricCharge> COULOMB
      The SI unit for electric charge, quantity of electricity (standard name C).
      static javax.measure.Unit<javax.measure.quantity.Volume> CUBIC_METRE
      The SI unit for volume quantities (standard name m3).
      static javax.measure.Unit<javax.measure.quantity.Time> DAY
      A time unit accepted for use with SI units (standard name d ).
      static javax.measure.Unit<javax.measure.quantity.ElectricCapacitance> FARAD
      The SI unit for capacitance (standard name F).
      static javax.measure.Unit<javax.measure.quantity.Mass> GRAM
      The SI derived unit for mass quantities (standard name g).
      static javax.measure.Unit<javax.measure.quantity.RadiationDoseAbsorbed> GRAY
      The SI unit for absorbed dose, specific energy (imparted), kerma (standard name Gy).
      static javax.measure.Unit<javax.measure.quantity.ElectricInductance> HENRY
      The alternate unit for inductance (standard name H).
      static javax.measure.Unit<javax.measure.quantity.Frequency> HERTZ
      The SI unit for frequency (standard name Hz).
      static javax.measure.Unit<javax.measure.quantity.Time> HOUR
      A time unit accepted for use with SI units (standard name h ).
      private static Units INSTANCE  
      static javax.measure.Unit<javax.measure.quantity.Energy> JOULE
      The SI unit for energy, work, quantity of heat (J).
      static javax.measure.Unit<javax.measure.quantity.CatalyticActivity> KATAL
      The SI unit for catalytic activity (standard name kat).
      static javax.measure.Unit<javax.measure.quantity.Temperature> KELVIN
      The SI base unit for thermodynamic temperature quantities (standard name K).
      static AbstractUnit<javax.measure.quantity.Mass> KILOGRAM
      The SI base unit for mass quantities (standard name kg).
      static javax.measure.Unit<javax.measure.quantity.Speed> KILOMETRE_PER_HOUR
      A unit of velocity expressing the number of international kilometres per hour (abbreviation km/h).
      static javax.measure.Unit<javax.measure.quantity.Volume> LITRE
      A volume unit accepted for use with SI units (standard name l).
      static javax.measure.Unit<javax.measure.quantity.LuminousFlux> LUMEN
      The SI unit for luminous flux (standard name lm).
      static javax.measure.Unit<javax.measure.quantity.Illuminance> LUX
      The SI unit for illuminance (standard name lx).
      static javax.measure.Unit<javax.measure.quantity.Length> METRE
      The SI base unit for length quantities (standard name m).
      static javax.measure.Unit<javax.measure.quantity.Speed> METRE_PER_SECOND
      The SI unit for velocity quantities (standard name m/s).
      static javax.measure.Unit<javax.measure.quantity.Acceleration> METRE_PER_SQUARE_SECOND
      The SI unit for acceleration quantities (standard name m/s2 ).
      static javax.measure.Unit<javax.measure.quantity.Time> MINUTE
      A time unit accepted for use with SI units (standard name min).
      static javax.measure.Unit<javax.measure.quantity.AmountOfSubstance> MOLE
      The SI base unit for amount of substance quantities (standard name mol).
      static javax.measure.Unit<javax.measure.quantity.Force> NEWTON
      The SI unit for force (standard name N).
      static AbstractUnit<javax.measure.quantity.ElectricResistance> OHM
      The SI unit for electric resistance (standard name Ohm).
      static javax.measure.Unit<javax.measure.quantity.Pressure> PASCAL
      The SI unit for pressure, stress (standard name Pa).
      static javax.measure.Unit<javax.measure.quantity.Dimensionless> PERCENT
      A dimensionless unit accepted for use with SI units (standard name %).
      static javax.measure.Unit<javax.measure.quantity.Angle> RADIAN
      The SI unit for plane angle quantities (standard name rad).
      static javax.measure.Unit<javax.measure.quantity.Time> SECOND
      The SI base unit for duration quantities (standard name s).
      static javax.measure.Unit<javax.measure.quantity.ElectricConductance> SIEMENS
      The SI unit for electric conductance (standard name S).
      static javax.measure.Unit<javax.measure.quantity.RadiationDoseEffective> SIEVERT
      The SI unit for dose equivalent (standard name Sv).
      static javax.measure.Unit<javax.measure.quantity.Area> SQUARE_METRE
      The SI unit for area quantities (standard name m2).
      static javax.measure.Unit<javax.measure.quantity.SolidAngle> STERADIAN
      The SI unit for solid angle quantities (standard name sr).
      static javax.measure.Unit<javax.measure.quantity.MagneticFluxDensity> TESLA
      The alternate unit for magnetic flux density (standard name T).
      static javax.measure.Unit<javax.measure.quantity.ElectricPotential> VOLT
      The SI unit for electric potential difference, electromotive force (standard name V).
      static javax.measure.Unit<javax.measure.quantity.Power> WATT
      The SI unit for power, radiant, flux (standard name W).
      static javax.measure.Unit<javax.measure.quantity.MagneticFlux> WEBER
      The SI unit for magnetic flux (standard name Wb).
      static javax.measure.Unit<javax.measure.quantity.Time> WEEK
      A unit of duration equal to 7 DAY (standard name week).
      static javax.measure.Unit<javax.measure.quantity.Time> YEAR
      A time unit accepted for use with SI units (standard name y ).
    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      protected Units()  
    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      private static <U extends javax.measure.Unit<?>>
      U
      addUnit​(U unit)
      Adds a new unit not mapped to any specified quantity type.
      private static <U extends AbstractUnit<?>>
      U
      addUnit​(U unit, java.lang.Class<? extends javax.measure.Quantity<?>> type)
      Adds a new unit and maps it to the specified quantity type.
      static javax.measure.spi.SystemOfUnits getInstance()
      Returns the unique instance of this class.
      java.lang.String getName()  
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Field Detail

      • INSTANCE

        private static final Units INSTANCE
      • AMPERE

        public static final javax.measure.Unit<javax.measure.quantity.ElectricCurrent> AMPERE
        The SI base unit for electric current quantities (standard name A). The Ampere is that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 meter apart in vacuum, would produce between these conductors a force equal to 2 * 10-7 newton per meter of length. It is named after the French physicist Andre Ampere (1775-1836).
      • CANDELA

        public static final javax.measure.Unit<javax.measure.quantity.LuminousIntensity> CANDELA
        The SI base unit for luminous intensity quantities (standard name cd). The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 * 1012 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian
        See Also:
        Wikipedia: Candela
      • KELVIN

        public static final javax.measure.Unit<javax.measure.quantity.Temperature> KELVIN
        The SI base unit for thermodynamic temperature quantities (standard name K). The kelvin is the 1/273.16th of the thermodynamic temperature of the triple point of water. It is named after the Scottish mathematician and physicist William Thomson 1st Lord Kelvin (1824-1907)
      • KILOGRAM

        public static final AbstractUnit<javax.measure.quantity.Mass> KILOGRAM
        The SI base unit for mass quantities (standard name kg). It is the only SI unit with a prefix as part of its name and symbol. The kilogram is equal to the mass of an international prototype in the form of a platinum-iridium cylinder kept at Sevres in France.
        See Also:
        GRAM
      • METRE

        public static final javax.measure.Unit<javax.measure.quantity.Length> METRE
        The SI base unit for length quantities (standard name m). One metre was redefined in 1983 as the distance traveled by light in a vacuum in 1/299,792,458 of a second.
      • MOLE

        public static final javax.measure.Unit<javax.measure.quantity.AmountOfSubstance> MOLE
        The SI base unit for amount of substance quantities (standard name mol). The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon 12.
      • SECOND

        public static final javax.measure.Unit<javax.measure.quantity.Time> SECOND
        The SI base unit for duration quantities (standard name s). It is defined as the duration of 9,192,631,770 cycles of radiation corresponding to the transition between two hyperfine levels of the ground state of cesium (1967 Standard).
      • GRAM

        public static final javax.measure.Unit<javax.measure.quantity.Mass> GRAM
        The SI derived unit for mass quantities (standard name g). The base unit for mass quantity is KILOGRAM.
      • RADIAN

        public static final javax.measure.Unit<javax.measure.quantity.Angle> RADIAN
        The SI unit for plane angle quantities (standard name rad). 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.
      • STERADIAN

        public static final javax.measure.Unit<javax.measure.quantity.SolidAngle> STERADIAN
        The SI unit for solid angle quantities (standard name sr). 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.
      • HERTZ

        public static final javax.measure.Unit<javax.measure.quantity.Frequency> HERTZ
        The SI unit for frequency (standard name Hz). 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.
      • NEWTON

        public static final javax.measure.Unit<javax.measure.quantity.Force> NEWTON
        The SI unit for force (standard name N). 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).
      • PASCAL

        public static final javax.measure.Unit<javax.measure.quantity.Pressure> PASCAL
        The SI unit for pressure, stress (standard name Pa). One pascal is equal to one newton per square meter. It is named after the French philosopher and mathematician Blaise Pascal (1623-1662).
      • 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).
      • WATT

        public static final javax.measure.Unit<javax.measure.quantity.Power> WATT
        The SI unit for power, radiant, flux (standard name W). One watt is equal to one joule per second. It is named after the British scientist James Watt (1736-1819).
      • COULOMB

        public static final javax.measure.Unit<javax.measure.quantity.ElectricCharge> COULOMB
        The SI unit for electric charge, quantity of electricity (standard name C). 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).
      • VOLT

        public static final javax.measure.Unit<javax.measure.quantity.ElectricPotential> VOLT
        The SI unit for electric potential difference, electromotive force (standard name V). 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).
      • FARAD

        public static final javax.measure.Unit<javax.measure.quantity.ElectricCapacitance> FARAD
        The SI unit for capacitance (standard name F). 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).
      • OHM

        public static final AbstractUnit<javax.measure.quantity.ElectricResistance> OHM
        The SI unit for electric resistance (standard name Ohm). 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).
      • SIEMENS

        public static final javax.measure.Unit<javax.measure.quantity.ElectricConductance> SIEMENS
        The SI unit for electric conductance (standard name S). One Siemens is equal to one ampere per volt. It is named after the German engineer Ernst Werner von Siemens (1816-1892).
      • WEBER

        public static final javax.measure.Unit<javax.measure.quantity.MagneticFlux> WEBER
        The SI unit for magnetic flux (standard name Wb). 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).
      • TESLA

        public static final javax.measure.Unit<javax.measure.quantity.MagneticFluxDensity> TESLA
        The alternate unit for magnetic flux density (standard name T). 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).
      • HENRY

        public static final javax.measure.Unit<javax.measure.quantity.ElectricInductance> HENRY
        The alternate unit for inductance (standard name H). 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).
      • CELSIUS

        public static final AbstractUnit<javax.measure.quantity.Temperature> CELSIUS
        The SI unit for Celsius temperature (standard name Cel). This is a unit of temperature such as the freezing point of water (at one atmosphere of pressure) is 0 Cel, while the boiling point is 100 Cel.
      • LUMEN

        public static final javax.measure.Unit<javax.measure.quantity.LuminousFlux> LUMEN
        The SI unit for luminous flux (standard name lm). 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.
      • LUX

        public static final javax.measure.Unit<javax.measure.quantity.Illuminance> LUX
        The SI unit for illuminance (standard name lx). One Lux is equal to one lumen per square metre.
      • BECQUEREL

        public static final javax.measure.Unit<javax.measure.quantity.Radioactivity> BECQUEREL
        The SI unit for activity of a radionuclide (standard name Bq ). One becquerel is the radiation caused by one disintegration per second. It is named after the French physicist, Antoine-Henri Becquerel (1852-1908).
      • GRAY

        public static final javax.measure.Unit<javax.measure.quantity.RadiationDoseAbsorbed> GRAY
        The SI unit for absorbed dose, specific energy (imparted), kerma (standard name Gy). 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).
      • SIEVERT

        public static final javax.measure.Unit<javax.measure.quantity.RadiationDoseEffective> SIEVERT
        The SI unit for dose equivalent (standard name Sv). 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).
      • KATAL

        public static final javax.measure.Unit<javax.measure.quantity.CatalyticActivity> KATAL
        The SI unit for catalytic activity (standard name kat).
      • METRE_PER_SECOND

        public static final javax.measure.Unit<javax.measure.quantity.Speed> METRE_PER_SECOND
        The SI unit for velocity quantities (standard name m/s).
      • 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 name m/s2 ).
      • SQUARE_METRE

        public static final javax.measure.Unit<javax.measure.quantity.Area> SQUARE_METRE
        The SI unit for area quantities (standard name m2).
      • CUBIC_METRE

        public static final javax.measure.Unit<javax.measure.quantity.Volume> CUBIC_METRE
        The SI unit for volume quantities (standard name m3).
      • KILOMETRE_PER_HOUR

        public static final javax.measure.Unit<javax.measure.quantity.Speed> KILOMETRE_PER_HOUR
        A unit of velocity expressing the number of international kilometres per hour (abbreviation km/h).
      • PERCENT

        public static final javax.measure.Unit<javax.measure.quantity.Dimensionless> PERCENT
        A dimensionless unit accepted for use with SI units (standard name %).
      • MINUTE

        public static final javax.measure.Unit<javax.measure.quantity.Time> MINUTE
        A time unit accepted for use with SI units (standard name min).
      • HOUR

        public static final javax.measure.Unit<javax.measure.quantity.Time> HOUR
        A time unit accepted for use with SI units (standard name h ).
      • DAY

        public static final javax.measure.Unit<javax.measure.quantity.Time> DAY
        A time unit accepted for use with SI units (standard name d ).
      • WEEK

        public static final javax.measure.Unit<javax.measure.quantity.Time> WEEK
        A unit of duration equal to 7 DAY (standard name week).
      • YEAR

        public static final javax.measure.Unit<javax.measure.quantity.Time> YEAR
        A time unit accepted for use with SI units (standard name y ).
      • LITRE

        public static final javax.measure.Unit<javax.measure.quantity.Volume> LITRE
        A volume unit accepted for use with SI units (standard name l).
        See Also:
        Wikipedia: Litre
    • Constructor Detail

      • Units

        protected Units()
    • Method Detail

      • getName

        public java.lang.String getName()
        Specified by:
        getName in interface tech.uom.lib.common.function.Nameable
        Specified by:
        getName in interface javax.measure.spi.SystemOfUnits
        Specified by:
        getName in class AbstractSystemOfUnits
      • getInstance

        public static javax.measure.spi.SystemOfUnits getInstance()
        Returns the unique instance of this class.
        Returns:
        the Units instance.
      • addUnit

        private static <U extends javax.measure.Unit<?>> U addUnit​(U unit)
        Adds a new unit not mapped to any specified quantity type.
        Parameters:
        unit - the unit being added.
        Returns:
        unit.
      • addUnit

        private static <U extends AbstractUnit<?>> U addUnit​(U unit,
                                                             java.lang.Class<? extends javax.measure.Quantity<?>> type)
        Adds a new unit and maps it to the specified quantity type.
        Parameters:
        unit - the unit being added.
        type - the quantity type.
        Returns:
        unit.