import javax.measure.*; import javax.measure.quantity.Length; import javax.measure.unit.SI; import javax.measure.unit.Unit; import javax.measure.unit.UnitFormat; public class MeasurementExample { public static void main(String[] args) { Unit<Length> meter = SI.METER; Unit<Length> kilometer = SI.KILO(SI.METER); double distanceInMeters = 1000; double distanceInKilometers = distanceInMeters / kilometer.getConverterTo(meter).convert(1); System.out.println("Distance in meters: " + distanceInMeters); System.out.println("Distance in kilometers: " + distanceInKilometers); UnitFormat format = UnitFormat.getInstance(); Unit<Length> parsedUnit = format.parse("km").asType(Length.class); double parsedDistanceInMeters = distanceInKilometers * parsedUnit.getConverterTo(meter).convert(1); System.out.println("Parsed unit: " + parsedUnit); System.out.println("Parsed distance in meters: " + parsedDistanceInMeters); } } <dependencies> <dependency> <groupId>net.java.dev.units</groupId> <artifactId>jsr-275</artifactId> <version>0.9.3</version> </dependency> </dependencies>


上一篇:
下一篇:
切换中文