Posts Tagged ArrayIndexOutOfBoundsException

WritableFont doesn’t like to be static!

While using the tool JExcelAPI within my Java application to generate Excel spreadsheets, I got the following exception:

java.lang.ArrayIndexOutOfBoundsException: 5
	at jxl.biff.IndexMapping.getNewIndex(
	at jxl.biff.FormattingRecords.rationalize(
	at jxl.write.biff.WritableWorkbookImpl.rationalize(
	at jxl.write.biff.WritableWorkbookImpl.write(

It appears that this exception occurs only when you try to generate more than one Excel spreadsheet! How strange is that! 😯
After a bit of investigation, it seems that the problem comes from the use of the static modifier with a jxl.write.WritableFont variable.

I unfortunately don’t have the time to check the JExcelAPI code source to understand the root cause.
So my advice would be: “if you get EXACTLY the same stack trace, simply delete any static modifier you used with the WritableFont variables”. 🙂

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