You can do hot reload for a long time with Java already. Go download TornadoFX and experiment with its hot reload functionality to see what you can do. This is

You can do hot reload for a long time with Java already. Go download TornadoFX and experiment with its hot reload functionality to see what you can do. This is definitely not a feature invented by Dart. From what I recall when I last looked at Dart/Flutter it doesn't have any new features not previously seen elsewhere.