String to Double in a field expression...

[gi-spot]

I solved my main trouble. Now the last one: I have a string which represents a number (cost of a component). I need to use this cost for calculating something else. How can I convert a string to double for using in a textfield expression?

Thank you all....

[kolaitis]

Expression

new Double(Double.parseDouble(yourField or variable))

Exp.class java.lang.Double

[gi-spot]

Thanks a lot: I'm beginning to understand something about. Expression you posted to me seemed to work fine in ireport, but when I try to compile the report in "invoicex" it returns to me the error:

net.sf.jasperreports.engine.fill.JRExpressionEvalException: Error evaluating expression: Source text: new Double(Double.parseDouble($F{importo})).

Procession Timing? A "null" string? Any idea? I'm going slightly mad...but thanks in advance to everybody will help me.
 

Post Edited by gi-spot at 05/10/2011 20:02

[gi-spot]

There's nobody talkin' at me, I don't hear the words they're saying, only the echo of my mind....

:-Anybody could give a little help, please?

[gail26]

You can use short-hand conditional statement.

SYNTAX:

( <condition> ? exp1 : exp2 )

 

variable will return exp1 if condition is true, else exp2 will be returned.

it is like

if(<condition>)

{

exp1

}

else

{

exp2

}

 

GoodLuck