Replacing the previous Excel sheet with a new one in the POI

When I create a new sheet, it works fine. However, when I try to call the same method to create another sheet, it overrides the previous one.

After multiple method calls, only the last sheet is showing up. Each time, I am creating a new sheet and not a new workbook in my code.

Can someone please explain how to properly code this so that all sheets are retained?

Answer №1

FileOutputStream fos = new FileOutputStream(outputString)

Assuming you are utilizing this method. By incorporating the boolean "true" in the syntax like so:

FileOutputStream fos = new FileOutputStream(outputString, true);

New data will append to the current data. It is recommended to experiment with it.

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