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POI excel rewrite file

 
zelynn goay
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Hi,

I would like to write to an existing excel file using POI. I added a clause to check if file doesn't exist, create a new excel, or if exist, create a new worksheet.
when i execute the program, i can the see a new excel file being created. when i execute again, i see the file size increase . but when i open up the excel file, i couldn't see any added changes. after i close the excel file, the file size decrease.

Please help.


[ August 12, 2008: Message edited by: zelynn goay ]
[ August 12, 2008: Message edited by: zelynn goay ]
 
Ulf Dittmer
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It's probably not a good idea to write to a file while it's still open for reading. Try closing the input file first, and then writing to it.
 
zelynn goay
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ok. thanks.
 
It is sorta covered in the JavaRanch Style Guide.
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