int  i= 1 ;
        PreparedStatement st = con.prepareStatement(Queries.INSERT_STREET, Statement.RETURN_GENERATED_KEYS);
        //
        DBWorks.prepareField(i++, street, st);
        //
        st.execute();
        id = st.getGeneratedKeys().getInt( 1 );
        st.close();

Exception in thread "main" org.postgresql.util.PSQLException: This method is not yet implemented.
	at org.postgresql.Driver.notImplemented(Driver.java:413)
	at org.postgresql.jdbc3.AbstractJdbc3Connection.prepareStatement(AbstractJdbc3Connection.java:283)