Problem in writing into the excel file using java code

Hai ,
I will be getting the data as a string and i am writing into the excel file. the problem is .if it has numeric values even now i will writing as a string data ,at this time i am getting the message in the excel file as "Number in the cell is formatted as text".
I need to remove this thru my code..but i can write only as a string .
To write in a excel file ,i used HSSFWorkbook.

just check out
http://www.andykhan.com/

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