import javax.measure.Quantity; import javax.measure.Unit; import javax.measure.Measurement; public class Main { public static void main(String[] args) { Quantity<Length> length = Quantities.getQuantity(10, Units.METRE); Unit<Length> unit = length.getUnit(); double value = length.getValue().doubleValue(); Quantity<Mass> mass = Quantities.getQuantity(5, Units.KILOGRAM); Measurement<Mass> measurement = Measurements.valueOf(mass, 0.01); double measuredValue = measurement.getValue().doubleValue(); } }