PreparedStatement getOrder = conn.prepareStatement( "SELECT quantity, price, extension FROM orders WHERE custId=?" );
getOrder.setInt( 1, custId );
ResultSet r = getOrder.executeQuery();
while ( r.next() )
   {
   int quantity = r.getInt( 1 );
   int price = r.getInt( 2 );
   // alternate access by field name
   int extension = r.getLong( "extension" );
   ...
   r.close();
   break;
   ...
   }