Jinx is a new product for writing Excel Add-Ins in Java:
https://exceljava.comIt works by embedding the JVM in Excel and exposing annotated Java (or Scala, Kotlin etc) methods to Excel as UDFs.
You can download the current beta version for free: https://exceljava.com/download.html.
I'd be interested to hear any feedback you might have! If you have any problems getting started please let me know and I will help you.
It's intended that when out of beta it will be free to use for personal/non-commercial use.
