Oracle, please get your crap together.

If you really wanted to make an amazing replacement for Java swing, you could have made the scene builder application for javafx not crash every 15 minutes on macOS. Seriously. I can't go more than a half hour without it freezing up and/or having the window disappear, never to open again. I get that it's a complicated program, but it's 10 YEARS OLD. It should have been stable by now.

A colleague of mine were bashing all day long about which JavaFX scene builder is the best. Let's settle this what do you think?

Quick question..

INFO:
Im attending Computer Science Study's im at the end of 1. Semester. We'r going to cover app development in 4th semester, but i cant wait that long, i want to use my spare time starting to build apps to get ahead of studys.

Im currently pretty decent in Java, so i want the app based on java language, and we've used scenebuilder for our desktop GUI's so far with FXML..

QUESTION : What do you use to develop java based ios/android apps - software,languages, etc.

Dont want to start a "this is better than that " war, just looking for a good entrypoint to java app development.

THANKS 👍