SystemOfUnits

```
public interface SystemOfUnits
```
A system of units grouped together for historical or cultural reasons.
Common system of units are "SI" (System International), "Imperial" (British), "US" (US Customary). Nothing prevents a unit from belonging to several systems of units at the same time (for example an Imperial system would have many of the units held by the US Customary system).

Since:

1.0

Version:

1.0, August 8, 2016

See Also:

Wikipedia: International System of Units, Wikipedia: System of measurement

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.lang.String`	`getName()`
`<Q extends Quantity<Q>> Unit<Q>`	`getUnit(java.lang.Class<Q> quantityType)`	Returns the default unit for the specified quantity.
`java.util.Set<? extends Unit<?>>`	`getUnits()`	Returns a read only view over the units explicitly defined by this system.
`java.util.Set<? extends Unit<?>>`	`getUnits(Dimension dimension)`	Returns the units defined in this system having the specified dimension (convenience method).

- Method Detail
  - getName
```
java.lang.String getName()
```
    Returns:
    
    a name
  - getUnit
```
<Q extends Quantity<Q>> Unit<Q> getUnit(java.lang.Class<Q> quantityType)
```
    Returns the default unit for the specified quantity.
    
    Type Parameters:
    
    Q - the compile-time quantity type.
    
    Parameters:
    
    quantityType - the quantity type.
    
    Returns:
    
    the unit for the specified quantity.
  - getUnits
```
java.util.Set<? extends Unit<?>> getUnits()
```
    Returns a read only view over the units explicitly defined by this system. This include the base and derived units which are assigned a special name and symbol. This set does not include new units created by arithmetic or other operations.
    
    Returns:
    
    the defined collection of units.
  - getUnits
```
java.util.Set<? extends Unit<?>> getUnits(Dimension dimension)
```
    Returns the units defined in this system having the specified dimension (convenience method).
    
    Parameters:
    
    dimension - the dimension of the units to be returned.
    
    Returns:
    
    the collection of units of specified dimension.