how can i set decimal precision at the time shapefile creation via java code

ambarishkumar — Fri, 19 Sep 2014 10:47:04 GMT

my code is mention below in the below i can create i shape file with numeric/long and string type, but i am not able to set the decimal precision in specific column. e.g. for RELPOS field i need to store the value in xxx.xxx (in 3 decimal value). how can create decimal value type via java code.

private static SimpleFeatureType createFeatureType() throws FactoryException {

		SimpleFeatureTypeBuilder builder = new SimpleFeatureTypeBuilder();
		builder.setName("Location");

		String wkt = "GEOGCS[" + "\"GCS_WGS_1984\"," + " DATUM[" + " \"D_WGS_1984\","
		+ " SPHEROID[\"WGS_1984\",6378137,298.257223563]],"
		+ " PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]],"
		+ " UNIT[\"Degree\",0.017453292519943295,AUTHORITY[\"EPSG\",\"9122\"]],"
		+ " AXIS[\"Lat\",NORTH]," + " AXIS[\"Long\",EAST],"
		+ " AUTHORITY[\"EPSG\",\"4326\"]]";

		CoordinateReferenceSystem crs = CRS.parseWKT(wkt);
		System.setProperty("org.geotools.referencing.forceXY", "true");
		builder.setCRS(crs);

		// add attributes in order
		builder.add("the_geom", Point.class);

		builder.length(15).add("ID", Long.class);
		builder.length(4).add("FEATTYP",Integer.class);
		builder.length(1).add("IMPORT",Integer.class);
		builder.length(3).add("ARNAMELC",String.class);
		builder.length(240).add("NAME",String.class);
		builder.length(150).add("STNAME",String.class);
		builder.length(3).add("STNAMELC",String.class);
		builder.length(15).add("HSNUM",String.class);////but house number is lengthy in Japan database which is more than 15.
		builder.length(10).add("POSTCODE",String.class);
		builder.length(15).add("MUNID",Long.class);
		builder.length(11).add("MUNCD",String.class);
		builder.length(100).add("MUNNAME",String.class);
		builder.length(100).add("BUANAME",String.class);
		builder.length(25).add("TELNUM",String.class);
		builder.length(25).add("FAXNUM",String.class);
		builder.length(70).add("EMAIL",String.class);
		builder.length(150).add("HTTP",String.class);////changed to 150 not clear in multinet document
		builder.length(70).add("COMPNAME",String.class);//changed from 150 to 70
		builder.length(15).add("CLTRPELID",Long.class);
		builder.length(6).add("RELPOS",Integer.class);
		builder.length(50).add("EXTPOIID",String.class);
		builder.length(15).add("ADDRPID",Long.class);
		builder.length(7).add("SUBCAT",Long.class);
		builder.length(2).add("GAL",Integer.class);
		builder.length(1).add("POSACCUR",Integer.class);
		// build the type
		final SimpleFeatureType LOCATION = builder.buildFeatureType();
		return LOCATION;
	}

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how can i set decimal precision at the time shapefile creation via java code