@abram this is code lifted straight from the CF docs: https://trycf.com/gist/60e6f6a00698f6a5994cd2c0bf19c222/acf2021?theme=monokai It runs OK on my machine (cough), so I know the code is fine. trycf.com chokes on it though, with

There was a compilation error. '' on line 1

Docs: https://helpx.adobe.com/coldfusion/using/java-integration-coldfusion.html#java-udf-cfc

maybe some security sanbox setting. I’ll investigate

don't bust a gut though mate, I cranked-up my local containers and have tested what I needed to test

on https://cffiddle.org it run

Yes. There's nothing wrong with the code. There's something wrong with trycf