Data types

Hello,

I'm trying to retireve some data from this table:

create table types (_numeric_ numeric);

_numeric_
-----------
10
(1 row)

usgin jdbc in this way:

If I try to do this query:
String query = "SELECT * FROM types";
I can get it as BigDecimal and gives me no problems.

But with this other:

String query = "SELECT * FROM types WHERE _numeric_=? ";
pStmt = con.prepareStatement(query);
pStmt.setBigDecimal(1, 10);

and java gives this exception:

java.sql.SQLException: ERROR: Unable to identify an operator
'=' for types 'numeric' and 'double precision'

I think it's because jdbc matches BigDecimals with 'double precision'
but I want to match them with 'numeric' instead.

Is there any way to do this match? How can I solve this problem?
Thanks