I tagged a new version of JavaCall a few days ago, v0.3.5. I would recommend upgrading to it immediately. In particular, this version is required to use dfdx/Spark.jl.
This version solves a long standing segfault (thanks to @adambrewster), as well as enable support for accessing fields of classes and instances. I wanted to particularly mention this version since it will be the last one that supports Julia v0.3.5. The next version will be julia 0.4 only. Please shout if this is likely to be of any concern. Regards - Avik
