Note: If you are using JavaFX 8 you may want to check out the (official) ControlsFX project which contains some nice widgets! This is the reason why this project will not be actively developed further and will only work for JavaFX 2.
This GitHub project provides simple
jar files for some of those sandbox controls.
JavaFX Dialogs are simple dialogs in the style of JOptionPane from Swing.
Details about JavaFX Dialogs
Marco Jakob (http://edu.makery.ch)