Looks Awesome. Is Awesome To Use. Similar to JavaFX alerts, but with more adaptability. You can choose between two styles: rounded and classic and the color themes black and white.

This repo has the code on how to create an Animated JavaFX field Validation alert. Download it, clone or modify as you may want for learning purposes or for your project.

Modality is a property of a JavaFX stage, which is the top-level container for a scene graph. A stage can have one of three modality types: none, window, or application. A stage with no modality is ...