Unit (OSGi Compendium Release 7)

java.lang.Object
- org.osgi.util.measurement.Unit

```
public class Unit
extends java.lang.Object
```
A unit system for measurements. This class contains definitions of the most common SI units.

This class only support exponents for the base SI units in the range -64 to +63. Any operation which produces an exponent outside of this range will result in a Unit object with undefined exponents.

"Immutable"

Field Summary

Fields
Modifier and Type	Field and Description
`static Unit`	`A` The electric current unit ampere (A)
`static Unit`	`C` The electric charge unit coulomb (C).
`static Unit`	`cd` The luminous intensity unit candela (cd)
`static Unit`	`F` The capacitance unit farad (F).
`static Unit`	`Gy` The absorbed dose unit gray (Gy).
`static Unit`	`Hz` The frequency unit hertz (Hz).
`static Unit`	`J` The energy unit joule (J).
`static Unit`	`K` The temperature unit kelvin (K)
`static Unit`	`kat` The catalytic activity unit katal (kat).
`static Unit`	`kg` The mass unit kilogram (kg)
`static Unit`	`lx` The illuminance unit lux (lx).
`static Unit`	`m` The length unit meter (m)
`static Unit`	`m_s` The speed unit meter per second (m/s)
`static Unit`	`m_s2` The acceleration unit meter per second squared (m/s²)
`static Unit`	`m2` The area unit square meter (m²)
`static Unit`	`m3` The volume unit cubic meter (m³)
`static Unit`	`mol` The amount of substance unit mole (mol)
`static Unit`	`N` The force unit newton (N).
`static Unit`	`Ohm` The electric resistance unit ohm.
`static Unit`	`Pa` The pressure unit pascal (Pa).
`static Unit`	`rad` The angle unit radians (rad)
`static Unit`	`s` The time unit second (s)
`static Unit`	`S` The electric conductance unit siemens (S).
`static Unit`	`T` The magnetic flux density unit tesla (T).
`static Unit`	`unity` No Unit (Unity)
`static Unit`	`V` The electric potential difference unit volt (V).
`static Unit`	`W` The power unit watt (W).
`static Unit`	`Wb` The magnetic flux unit weber (Wb).

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`equals(java.lang.Object obj)` Checks whether this `Unit` object is equal to the specified `Unit` object.
`int`	`hashCode()` Returns the hash code for this object.
`java.lang.String`	`toString()` Returns a `String` object representing the `Unit`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - unity
```
public static final Unit unity
```
    No Unit (Unity)
  - m
```
public static final Unit m
```
    The length unit meter (m)
  - s
```
public static final Unit s
```
    The time unit second (s)
  - kg
```
public static final Unit kg
```
    The mass unit kilogram (kg)
  - K
```
public static final Unit K
```
    The temperature unit kelvin (K)
  - A
```
public static final Unit A
```
    The electric current unit ampere (A)
  - mol
```
public static final Unit mol
```
    The amount of substance unit mole (mol)
  - cd
```
public static final Unit cd
```
    The luminous intensity unit candela (cd)
  - m_s
```
public static final Unit m_s
```
    The speed unit meter per second (m/s)
  - m_s2
```
public static final Unit m_s2
```
    The acceleration unit meter per second squared (m/s²)
  - m2
```
public static final Unit m2
```
    The area unit square meter (m²)
  - m3
```
public static final Unit m3
```
    The volume unit cubic meter (m³)
  - Hz
```
public static final Unit Hz
```
    The frequency unit hertz (Hz).
    hertz is expressed in SI units as 1/s
  - N
```
public static final Unit N
```
    The force unit newton (N).
    N is expressed in SI units as m·kg/s²
  - Pa
```
public static final Unit Pa
```
    The pressure unit pascal (Pa).
    Pa is equal to N/m² or is expressed in SI units as kg/m·s²
  - J
```
public static final Unit J
```
    The energy unit joule (J).
    joule is equal to N·m or is expressed in SI units as m²·kg/s²
  - W
```
public static final Unit W
```
    The power unit watt (W).
    watt is equal to J/s or is expressed in SI units as m²·kg/s³
  - C
```
public static final Unit C
```
    The electric charge unit coulomb (C).
    coulomb is expressed in SI units as s·A
  - V
```
public static final Unit V
```
    The electric potential difference unit volt (V).
    volt is equal to W/A or is expressed in SI units as m²·kg/s³·A
  - F
```
public static final Unit F
```
    The capacitance unit farad (F).
    farad is equal to C/V or is expressed in SI units as s⁴·A²/m²·kg
  - Ohm
```
public static final Unit Ohm
```
    The electric resistance unit ohm.
    ohm is equal to V/A or is expressed in SI units as m²·kg/s³·A²
  - S
```
public static final Unit S
```
    The electric conductance unit siemens (S).
    siemens is equal to A/V or is expressed in SI units as s³·A²/m²·kg
  - Wb
```
public static final Unit Wb
```
    The magnetic flux unit weber (Wb).
    weber is equal to V·s or is expressed in SI units as m²·kg/s²·A
  - T
```
public static final Unit T
```
    The magnetic flux density unit tesla (T).
    tesla is equal to Wb/m² or is expressed in SI units as kg/s²·A
  - lx
```
public static final Unit lx
```
    The illuminance unit lux (lx).
    lux is expressed in SI units as cd/m²
  - Gy
```
public static final Unit Gy
```
    The absorbed dose unit gray (Gy).
    Gy is equal to J/kg or is expressed in SI units as m²/s²
  - kat
```
public static final Unit kat
```
    The catalytic activity unit katal (kat).
    katal is expressed in SI units as mol/s
  - rad
```
public static final Unit rad
```
    The angle unit radians (rad)
- Method Detail
  - equals
```
public boolean equals(java.lang.Object obj)
```
    Checks whether this Unit object is equal to the specified Unit object. The Unit objects are considered equal if their exponents are equal.
    
    Overrides:
    
    equals in class java.lang.Object
    
    Parameters:
    
    obj - the Unit object that should be checked for equality
    
    Returns:
    
    true if the specified Unit object is equal to this Unit object.
  - hashCode
```
public int hashCode()
```
    Returns the hash code for this object.
    
    Overrides:
    
    hashCode in class java.lang.Object
    
    Returns:
    
    This object's hash code.
  - toString
```
public java.lang.String toString()
```
    Returns a String object representing the Unit
    
    Overrides:
    
    toString in class java.lang.Object
    
    Returns:
    
    A String object representing the Unit

Class Unit

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

unity

m

s

kg

K

A

mol

cd

m_s

m_s2

m2

m3

Hz

N

Pa

J

W

C

V

F

Ohm

S

Wb

T

lx

Gy

kat

rad

Method Detail

equals

hashCode

toString