Apache POI XSSFWorkbook throwing NullPointerException for file

Question

I have checked every possible question on here with a similar problem, and none of the solutions have worked. I feel like I am missing something really obvious, but I just c

Answer 1

So after much troubleshoooting, I abandoned using the Apache POI jar files, and switched to using maven and adding apache poi as a dependancy, and my code now runs successfully.

Thank you too everyone who helped and made suggestions, though I am still not sure of the origin of the communication problem between Eclipse and the POI jar files.