import org.opengis.referencing.operation.CoordinateOperationFactory; //导入依赖的package包/类
CoordinateReferenceSystem createCrs(String crsName, OperationMethod method,
                                              ParameterValueGroup parameters,
                                              GeodeticDatum datum) throws FactoryException {
    final CRSFactory crsFactory = ReferencingFactoryFinder.getCRSFactory(null);
    final CoordinateOperationFactory coFactory = ReferencingFactoryFinder.getCoordinateOperationFactory(null);
    final HashMap<String, Object> projProperties = new HashMap<String, Object>();
    projProperties.put("name", crsName + " / " + datum.getName().getCode());
    final Conversion conversion = coFactory.createDefiningConversion(projProperties,
                                                                     method,
                                                                     parameters);
    final HashMap<String, Object> baseCrsProperties = new HashMap<String, Object>();
    baseCrsProperties.put("name", datum.getName().getCode());
    final GeographicCRS baseCrs = crsFactory.createGeographicCRS(baseCrsProperties, datum,
                                                                 DefaultEllipsoidalCS.GEODETIC_2D);
    return crsFactory.createProjectedCRS(projProperties, baseCrs, conversion, DefaultCartesianCS.PROJECTED);
}
 

import org.opengis.referencing.operation.CoordinateOperationFactory; //导入依赖的package包/类
public static Geometry convertUTM_MGA942Geographic_EPSG4326(Double easting, Double northing, String zone) throws NoSuchAuthorityCodeException, FactoryException, MismatchedDimensionException, TransformException{
	CoordinateReferenceSystem geographic = CRS.decode("EPSG:4326", false);
	CoordinateReferenceSystem geographic2 = ReferencingFactoryFinder.getCRSAuthorityFactory(
			"EPSG", null).createCoordinateReferenceSystem("4326");
	

	
	CoordinateReferenceSystem utm = ReferencingFactoryFinder.getCRSAuthorityFactory(
			"EPSG", null).createCoordinateReferenceSystem("283"+zone);
	
	CoordinateOperationFactory coFactory = ReferencingFactoryFinder
			.getCoordinateOperationFactory(null);
	
	CoordinateReferenceSystem sourceCRS = utm;		
	CoordinateReferenceSystem targetCRS = geographic;

	GeometryFactory gf = new GeometryFactory();
       Coordinate coord = new Coordinate( easting, northing );
       Point point = gf.createPoint( coord );
       
	
	MathTransform mathTransform =CRS.findMathTransform( sourceCRS, targetCRS,true );
	Geometry g2 = JTS.transform(point, mathTransform);
	
	//VT: Flip around to correct the lat lon from the utm to geographic transformation
	Coordinate[] original = g2.getCoordinates();
	for(int i = 0; i < original.length; i++){
	    Double swapValue = original[i].x;
	    original[i].x = original[i].y;
	    original[i].y = swapValue;
	}
    
	return g2;
}