Based on Rapbian Wheezy without any DesktopManager, uninstalled LightDM, Java8FX Engine writes JavaFX direct to Framebuffer.

Good instructions, but many tricky http://www.oracle.com/webfolder/technetwork/tutorials/obe/java/RaspberryPiFX/raspberryfx.html

EDIT /boot/config.txt like:

# uncomment to force a specific HDMI mode (this will force VGA)
hdmi_group=2
hdmi_mode=87
hdmi_cvt=320 240 60 1 0 0 0
# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
#hdmi_drive=2

# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
#config_hdmi_boost=4

# uncomment for composite PAL
#sdtv_mode=2


# Uncomment some or all of these to enable the optional hardware interfaces
#dtparam=i2c_arm=on
#dtparam=i2s=on
dtparam=spi=on

Install fbcp to copy Main Framebuffer to LCD-Framebuffer.

     sudo apt-get install cmake git
     git clone https://www.github.com/tasanakorn/rpi-fbcp
     cd rpi-fbcp/
     mkdir build
     cd build
     cmake ..
     make
     install fbcp /usr/local/bin/fbcp

Create start.sh as Code example.

#!/bin/sh
#On Staging kernel not needed
#sudo modprobe fbtft dma

#Example for hy28B
sudo modprobe fbtft_device name=hy28b fbtft_device.speed=3000000 rotate=90 fbtft_device.fps=20
sleep 10
fbcp&
JAVAFX_DEBUG=1 java -Dcom.sun.javafx.experimental.embedded.3d=true -Dprism.glDepthSize=16 -jar /home/pi/StarWars.jar

Update Kernel with rpi-update:

rpi-update
reboot
REPO_URI=https://github.com/notro/rpi-firmware rpi-update
reboot

Download Java8 JDKu71 for ARM and extract archive. EXPORT java PATH to opt/jdkXXX/bin

sudo tar zxvf jdk-8u71-linux-arm32-vfp-hflt.tar.gz -C /opt/
mv /opt/jdk1.8.0_71/ /opt/jdk1.8.0

Compile StarWars JAvaFX Script and put StarWars.jpg as Background in same Folder :

import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.animation.Animation;
import javafx.animation.Animation.Status;
import javafx.animation.Interpolator;
import javafx.animation.KeyFrame;
import javafx.animation.KeyValue;
import javafx.animation.PauseTransition;
import javafx.animation.SequentialTransition;
import javafx.animation.Timeline;
import javafx.animation.TranslateTransition;
import javafx.application.Application;
import static javafx.application.Application.launch;
import javafx.concurrent.Service;
import javafx.concurrent.Task;
import javafx.concurrent.WorkerStateEvent;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Point3D;
import javafx.scene.Group;
import javafx.scene.PerspectiveCamera;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;
import javafx.scene.text.FontPosture;
import javafx.scene.text.Text;
import javafx.scene.text.TextAlignment;
import javafx.stage.Stage;
import javafx.stage.StageStyle;
import javafx.util.Duration;

public class TextCrawler extends Application {

    private static final String crawl = "22:24";

    @Override
    @SuppressWarnings("empty-statement")
    public void start(Stage stage) throws Exception {
        
        Group root = new Group();
        root.setTranslateX(160);
        root.setTranslateY(120);
      
ImageView background = new ImageView(new Image("StarWars.jpg", 320, 240, false, true));
background.relocate(-160, -120);
root.getChildren().add(background);
File file = new File("starfield.css"); 
  root.getStylesheets().add(file.toURI().toURL().toExternalForm());  

         //   root.setStyle("-fx-background-image: url('StarWars.jpg')");  
        Scene scene = new Scene(root);
        scene.setCamera(new PerspectiveCamera());
        //scene.setFill(Color.BLACK);
     
        stage.setScene(scene);
        stage.setWidth(320);
        stage.setHeight(240);
        stage.initStyle(StageStyle.UNDECORATED);
 
      
        Text text = new Text(getCurrentTimeStamp());
        text.setTextAlignment(TextAlignment.CENTER);
        text.setFill(Color.YELLOW);
        text.setFont(Font.font("Arial", FontPosture.REGULAR, 100));
        text.setRotationAxis(new Point3D(1.0, 0.0, 0.0));
        text.setRotate(-50.0);
        text.setTranslateX(-text.getLayoutBounds().getWidth() / 2);
        root.getChildren().add(text);
        stage.show();

        TranslateTransition trans = new TranslateTransition(Duration.millis(20_000), text);
        trans.setFromY(500);//500
        trans.setFromZ(-1_000);
        trans.setToY(-500);
        trans.setToZ(1000);//1000
        trans.setInterpolator(Interpolator.LINEAR);
//        trans.setCycleCount(Animation.INDEFINITE);
        trans.setCycleCount(0);

      
        trans.setOnFinished(new EventHandler<ActionEvent>() {

            @Override
            public void handle(ActionEvent event) {
                             text.setText(getCurrentTimeStamp());
                  Task<Void> sleeper = new Task<Void>() {
            @Override
            protected Void call() throws Exception {
                try {
                    Thread.sleep(9500);

                } catch (InterruptedException e) {
                }
                return null;
            }
        };
               sleeper.setOnSucceeded(new EventHandler<WorkerStateEvent>() {
            @Override
            public void handle(WorkerStateEvent event) {
                
                trans.pause();
                try {
                    Thread.sleep(50000);
                } catch (InterruptedException ex) {
                    Logger.getLogger(TextCrawler.class.getName()).log(Level.SEVERE, null, ex);
                }
                trans.play();
            }
        });
                new Thread(sleeper).start();
                trans.play();
            }
        });
 

        trans.play();

    }

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

    public String getCurrentTimeStamp() {
        return new SimpleDateFormat("HH:mm").format(new Date());
    }

    private void Runnable() {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }
}

Start on Boot:

sudo nano /etc/rc.local

EDIT:

sudo -u pi sh /home/pi/start.sh

BEFORE:

exit 0