Jinx is a new product for writing Excel Add-Ins in Java: <a href="https://exceljava.com" rel="nofollow">https://exceljava.com</a><p>It works by embedding the JVM in Excel and exposing annotated Java (or Scala, Kotlin etc) methods to Excel as UDFs.<p>You can download the current beta version for free: <a href="https://exceljava.com/download.html" rel="nofollow">https://exceljava.com/download.html</a>.<p>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.<p>It's intended that when out of beta it will be free to use for personal/non-commercial use.