Hello,
Thank you for your inquiry.
Our latest free version of Spire.XLS supports JDK15 as the highest supported version. However, our commercial version offers support for even higher versions of JDK. I recommend using our commercial version (
Spire.XLS for Java Version: 13.11.6) for your testing purposes.
If you require further assistance or have any additional questions, please feel free to let us know. We are here to assist you.
Sincerely,
Annika
E-iceblue support team