[Geotools-gt2-users] errror converting from Lat/Long to UTM

[ari f. <ar...@le...>]

Hello,

I am trying to convert lat long into utm, when  executing the  
following code:

			double utmZoneCenterLongitude = -123;	  // Center lon of zone,  
example: zone 10 = -123
			int zoneNumber = 55;				    // zone number, example: 10
			double latitude=-37.13298390;
			double longitude = 144.47529813;    // lat, lon in degrees
			MathTransformFactory mtFactory =  
ReferencingFactoryFinder.getMathTransformFactory(null);
			ReferencingFactoryContainer factories = new  
ReferencingFactoryContainer(null);
			
			GeographicCRS geoCRS =  
org.geotools.referencing.crs.DefaultGeographicCRS.WGS84;
			CartesianCS cartCS =  
org.geotools.referencing.cs.DefaultCartesianCS.GENERIC_2D;

			ParameterValueGroup parameters =  
mtFactory.getDefaultParameters("Transverse_Mercator");
			 
parameters 
.parameter("central_meridian").setValue(utmZoneCenterLongitude);
			parameters.parameter("latitude_of_origin").setValue(0.0);
			parameters.parameter("scale_factor").setValue(0.9996);
			parameters.parameter("false_easting").setValue(500000.0);
			parameters.parameter("false_northing").setValue(0.0);

			Map properties = Collections.singletonMap("name", "WGS 84 / UTM  
Zone " + zoneNumber);
			ProjectedCRS projCRS = factories.createProjectedCRS(properties,  
geoCRS, null, parameters, cartCS);

			MathTransform transform = CRS.findMathTransform(geoCRS, projCRS);

			double[] dest = new double[2];
			transform.transform(new double[] {longitude, latitude}, 0, dest, 0,  
1);

			int easting = (int)Math.round(dest[0]);
			int northing = (int)Math.round(dest[1]);


	i get an error:
			Exception in thread "main" java.lang.IncompatibleClassChangeError:  
Implementing class

	when executing the line:

			MathTransformFactory mtFactory =  
ReferencingFactoryFinder.getMathTransformFactory(null);

can anybody give me some guidance?

thanks