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Calling valueOf () of apache POI in Groovy

Yellapa Adepu
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Hello All,
I am trying save an excel sheeting using apache POI from a groovy class. But I getting a type casting exception not sure how to resolve it. Your help is much appreciated.

I am trying to add conditional formatting to the excel sheet, per apache POI here is the code. Here is my code snippet in groovy (because of this issue, am trying to as near as possible to Java in this logic)

While executing when it comes 'CellRangeAddress[] regions = {CellRangeAddress.valueOf("E2:E32")};' it throws

[java] 2012-08-09 22:52:13,487 ERROR GroovyTaskWrapper - Error occured while :[EXECUTE] Cannot cast object 'Excel$_addDataBars_closure9@1f635484' with class 'Excel$_addDataBars_closure9' to class 'org.apache.poi.hssf.util.CellRangeAddress'

For additional information: Here is the example form Apache POI
I am trying to follow the below snippet

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