I was not aware of this, so thanks for bringing it up.

It's a pretty amazing technical feat that this works at all, but I have a hard time imagining this would work well in practice for changes to anything other than maybe method bodies and templates though. Java's style of object orientation generally means there's plenty of tight-coupling between application state and operations on the application state, which would probably make life very difficult for any hot-reload implementation.

But regardless, it does exist and apparently works well for a lot of people. It looks like I was just ignorant when it comes to native tooling.

Its definitely hard, but JRebel has had 7 years to figure this stuff out and so far seems to work just as well on Android.

Only one way to find out tho :) Trying it out for oneself.