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Dimitris,

Dimitris Mouchritsas wrote:
> <fmt:formatNumber type = "currency" groupingUsed = "true" >
>  ${ table_data.package_price +
>  ( road_assistance_2year == '-' ? 0.0 : road_assistance_2year ) +
>  ( comp_offer_data.hasInsurance ? table_data.insuranceValue : 0.0 ) }
> </fmt:formatNumber>
>
> and in Tomcat 6.0.13 it works fine. However in Tomcat 5.0.19 the page
> stops processing and and exception is thrown.

Perhaps the compiler bundled with TC 6 is more forgiving.

> Tomcat complains that he cannot convert String '-' to a
> java.lang.Double.

I assume that table_data.package_price is a double (or Double). You are
adding the result of the ternary operator. The second parameter to the
ternary operator is a double value (0.0). The third one is a String.
Just wrap road_assistance_2year like this:

${ table_data.package_price +
( road_assistance_2year == '-' ? 0.0 :
Double.doubleValue(road_assistance_2year) ) + ...

If you are using localized double values, you'll obviously have to use
another conversion mechanism -- or perhaps you prefer to use something
from your webapp framework of whatever. The point is the same: you can't
add a String to a double. You need compatible data types, so just convert.

- -chris
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