RubikFX.java

import javafx.application.Application;
import javafx.geometry.Orientation;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Separator;
import javafx.scene.control.ToolBar;
import javafx.scene.layout.BorderPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class RubikFX extends Application {
    
    private final BorderPane pane=new BorderPane();
    private Rubik rubik;
    
    @Override
    public void start(Stage stage) {
        /*
        Import Rubik's Cube model and arrows
        */
        rubik=new Rubik();
        // create toolbars
        ToolBar tbTop=new ToolBar(new Button("U"),new Button("Ui"),new Button("F"),
                                  new Button("Fi"),new Separator(),new Button("Y"),
                                  new Button("Yi"),new Button("Z"),new Button("Zi"));
        // tbTop.setStyle("-fx-background-color: rgb(225, 230, 242);");
        pane.setTop(tbTop);
        ToolBar tbBottom=new ToolBar(new Button("B"),new Button("Bi"),new Button("D"),
                                     new Button("Di"),new Button("E"),new Button("Ei"));
        pane.setBottom(tbBottom);
        ToolBar tbRight=new ToolBar(new Button("R"),new Button("Ri"),new Separator(),
                                    new Button("X"),new Button("Xi"));
        tbRight.setOrientation(Orientation.VERTICAL);
        pane.setRight(tbRight);
        ToolBar tbLeft=new ToolBar(new Button("L"),new Button("Li"),new Button("M"),
                                   new Button("Mi"),new Button("S"),new Button("Si"));
        tbLeft.setOrientation(Orientation.VERTICAL);
        pane.setLeft(tbLeft);
        
        pane.setCenter(rubik.getSubScene());
        
        pane.getChildren().stream()
            .filter(n -> (n instanceof ToolBar))
            .forEach(tb->{
                ((ToolBar)tb).getItems().stream()
                    .filter(n -> (n instanceof Button))
                    .forEach(n->((Button)n).setOnAction(e->rubik.rotateFace(((Button)n).getText())));
            });
        rubik.isOnRotation().addListener((ov,b,b1)->{
            pane.getChildren().stream()
            .filter(n -> (n instanceof ToolBar))
            .forEach(tb->tb.setDisable(b1));
        });
        final Scene scene = new Scene(pane, 880, 680, true);
        scene.setFill(Color.WHITE);
        stage.setTitle("Rubik's Cube - JavaFX 3D");
        stage.setScene(scene);
        stage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
    
}