Just for future reference …
As robovm is closing down I was reading at the libGDX author its blog about the current alternatives for deploying ‘Java’ to Android and more importantly iOS. I feel comfortable with J2ObjC but long term we probably need something else? Not sure if Apple will close down Objective-C support at some point 
Some of the interesting options are:
- open source forks of robovm: FlexoVM and bugvm
- Xamarin & IKVM
- rewrite in .NET/C#
- Avian
- CodeName1 (probably not a good choice re performance?)
- OpenJDK9 should work on Android&iOS (interesting but apps will be too huge
)
)closed source:
- the Multi-OS engine, very strange that libGDX considers this as an alternative …
- neomades