Created attachment 37619 [details] jar misses some packages I am new user who uses your POI jar to interact with office files. However, I found I can not import classes normally, such as xssf. By consulting API Docs and uzip jar, I think you may fail to zip some packages into poi-4.1.2. Such as package xssf. I clearly see it in the api structure but can not see in the jar file. So, I hope you can check and reply. I download the jar from different mirrors and check sha code, so I do not think it is the mistake made by mirror sites.
POI code base is delivered using more than one jar. See https://poi.apache.org/components/