I tried to use the external libraries - POI Jars for Excel API.
I followed the steps stated in this blog:
/people/valery.silaev/blog/2005/09/14/a-bit-of-impractical-scripting-for-web-dynpro
A bit of (impractical) scripting for Web Dynpro
From the few forum posts that I have read, I get to know that this blog is outdated and it is not suitable for SP16.
In fact, I read quite some number of post in SDN about using external libraries in WDP DC. But I can't really find anything fit for SP16.
I am quite upset that this little thing spent me so many hours. And I don't understand something works in SP11, and end up outdated and not working for the newer version for DC architeture.
I just wish someone can write a blog on this (as I really see so many people having the same problem like I do... most of the posts on this topic are not answered yet).
I really need help on this.
Please advise.
Thanks in advance.
Kent