Package javax.measure.unit

Class CompoundUnit<Q extends Quantity>

java.lang.Object
javax.measure.unit.Unit<Q>
javax.measure.unit.DerivedUnit<Q>
javax.measure.unit.CompoundUnit<Q>
All Implemented Interfaces:
Serializable
public final class CompoundUnit<Q extends Quantity> extends DerivedUnit<Q>

This class represents the multi-radix units (such as "hour:min:sec"). Instances of this class are created using the Unit.compound method.

Examples of compound units:[code] Unit HOUR_MINUTE_SECOND = HOUR.compound(MINUTE).compound(SECOND); Unit DEGREE_MINUTE_ANGLE = DEGREE_ANGLE.compound(MINUTE_ANGLE); [/code]

See Also:

  • Method Details

    • getLower

      public Unit<Q> getLower()
      Returns the lower unit of this compound unit.
      Returns:
      the lower unit.

    • getHigher

      public Unit<Q> getHigher()
      Returns the higher unit of this compound unit.
      Returns:
      the higher unit.

    • equals

      public boolean equals(Object that)
      Indicates if this compound unit is considered equals to the specified object (both are compound units with same composing units in the same order).
      Specified by:
      equals in class Unit<Q extends Quantity>
      Parameters:
      that - the object to compare for equality.
      Returns:
      true if this and that are considered equals; falseotherwise.

    • hashCode

      public int hashCode()
      Description copied from class: Unit
      Returns the hash code for this unit.
      Specified by:
      hashCode in class Unit<Q extends Quantity>
      Returns:
      this unit hashcode value.

    • getStandardUnit

      public Unit<? super Q> getStandardUnit()
      Description copied from class: Unit
      Returns the base unit, alternate unit or product of base units and alternate units this unit is derived from. The standard unit identifies the "type" of quantity for which this unit is employed. For example:[code] boolean isAngularVelocity(Unit<?> u) { return u.getStandardUnit().equals(RADIAN.divide(SECOND)); } assert(REVOLUTION.divide(MINUTE).isAngularVelocity()); [/code]

      Note: Having the same system unit is not sufficient to ensure that a converter exists between the two units (e.g. °C/m and K/m).

      Specified by:
      getStandardUnit in class Unit<Q extends Quantity>
      Returns:
      the system unit this unit is derived from.

    • toStandardUnit

      public UnitConverter toStandardUnit()
      Description copied from class: Unit
      Returns the converter from this unit to its system unit.
      Specified by:
      toStandardUnit in class Unit<Q extends Quantity>
      Returns:
      this.getConverterTo(this.getSystemUnit())