Can't cast String to Long in jasper

[dheeraj.madhu]

I am trying to convert a String value to long in jasper report and convert it to Date object. But i always end up getting a class cast exception from String to Long.

java.lang.String cannot be cast to java.lang.Number

I am trying following code

<variable name="date" class="java.util.Date">                                                                                                                                                  <variableExpression><![CDATA[new Date(Long.getLong($F{field}))]]></variableExpression>                                                                                         </variable>[/code]

 

Long.getLong(String s) gives desired output in Java. But when we use same java expression it gives exception in jasper. Does jasper treats primitive java types differently?

[dheeraj.madhu]

Problem was somewhere else. Solved it.