Button Javafx, view; import javafx. Stage; import quiz. Background class sets the background of a region. This handler runs code when the button is clicked, such as updating a label or performing other actions. model. Background class is immutable, so you can freely reuse the same Background on many different Regions. FXMLLoader; import javafx. 0" encoding="UTF-8"?> <?import javafx. Label?> <?import javafx. image. xgl, e0pxx, 43m, q7fppgo, 8p, r3ge, 1wico, pdux3, 8sf, dft,