import java.sql.*;

public class FuncDesc {
	public static void main(String args[]) throws Exception {
		Class.forName("org.postgresql.Driver");

		Connection conn = DriverManager.getConnection("jdbc:postgresql://localhost:5820/jurka?loglevel=2","jurka","");

		CallableStatement cs = conn.prepareCall("{? = call sin(?)}");
		cs.registerOutParameter(1, Types.DOUBLE);

		ParameterMetaData pmd = cs.getParameterMetaData();
		System.out.println("Count: " + pmd.getParameterCount());
		for (int i=1; i<pmd.getParameterCount(); i++) {
			System.out.println("" + i + ": " + pmd.getParameterMode(i) + " - " + pmd.getParameterTypeName(i));
		}

		cs.close();
		conn.close();
	}
}