You might want to look into the [UpToDate Project](https://github.com/uptodate-project/uptodate) which is fully compatible with the Java 9 Module System and meets your requirements.
It has the ability to update and launch the new files without restarting the virtual machine.

For Java you might want to look into the [UpToDate Project](https://github.com/uptodate-project/uptodate) which is fully compatible with the Java 9 Module System.
It has the ability to update and launch the new files without restarting the virtual machine.