Bug extracting money value

Hello!

I always get an exception when I try to extract the money value I inserted this way:

insert into public."dbtypes" ("cmoney") values ('7').

Java:
Object oValue = m_resultSet.getObject(i);

Stacktrace (postgresql-8.2dev-503.jdbc3.jar):
org.postgresql.util.PSQLException: Bad value for type double : ?7,00
at org.postgresql.jdbc2.AbstractJdbc2ResultSet.toDouble(AbstractJdbc2ResultSet.java:2594)
at org.postgresql.jdbc2.AbstractJdbc2ResultSet.getDouble(AbstractJdbc2ResultSet.java:1975)
at org.postgresql.jdbc2.AbstractJdbc2ResultSet.internalGetObject(AbstractJdbc2ResultSet.java:132)
at org.postgresql.jdbc3.AbstractJdbc3ResultSet.internalGetObject(AbstractJdbc3ResultSet.java:39)
at org.postgresql.jdbc2.AbstractJdbc2ResultSet.getObject(AbstractJdbc2ResultSet.java:2291)

resultSet.getDouble(i); doesn't work either.
resultSet.getString(i); returns '?7,00' without exception.

Tested with:
PostgreSQL 8.1.4 on Windows 2000
JDBC driver: postgresql-8.2dev-503.jdbc3.jar AND postgresql-8.1-407.jdbc3.jar

Thanks

Holger