Cause the fullscreen option doesn't support setting the resolution and swing does,
i tried to set the resolution in swing and then embed the javafx application but it doesn't show anything..



package hh;
 
import javafx.application.Platform;
import javafx.embed.swing.JFXPanel;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
 
import javax.swing.*;
import java.awt.*;
 
public class Test extends JFrame {
 
    private static JFXPanel javafxPanel;
    private ScreenManager screen = new ScreenManager(this);
    private static Scene scene;
    private static DisplayMode displayMode;
 
    public static void createScene() {
        Group root = new Group();
        scene = new Scene(root);
 
        Group content = new Group();
        ImageView bg1 = new ImageView();
        bg1.setImage(new Image(Test.class.getResourceAsStream("/background.jpg")));
        content.getChildren().add(bg1);
 
        root.getChildren().add(content);
        // add scene to panel
        javafxPanel.setScene(scene);
    }
 
    public static void main(String[] args) {
        new Test();
    }
 
    public Test() {
 
        GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
        int bitDepth = env.getDefaultScreenDevice().getDisplayMode().getBitDepth();
        displayMode = new DisplayMode(1024, 768, bitDepth, DisplayMode.REFRESH_RATE_UNKNOWN);
 
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                JFrame frame = new JFrame("test");
                frame.setResizable(false);
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 
                // create javafx panel
                javafxPanel = new JFXPanel();
                javafxPanel.setPreferredSize(new Dimension(550, 400));
 
                // create JavaFX scene
                Platform.runLater(new Runnable() {
                    public void run() {
                        createScene();
                    }
                });
 
                frame.setContentPane(javafxPanel);
                screen.setFullScreen(displayMode);
 
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
 
    }
}
 
 
------------------------------
 
package hh;
 
import javax.swing.*;
import java.awt.*;
 
public class ScreenManager {
 
    private GraphicsDevice device;
    private JFrame window;
 
    public ScreenManager(JFrame window) {
        this.window = window;
        GraphicsEnvironment environment = GraphicsEnvironment.getLocalGraphicsEnvironment();
        device = environment.getDefaultScreenDevice();
    }
 
    public void setFullScreen(DisplayMode displayMode) {
 
        this.window.setVisible(false);
        this.window.dispose();
        this.window.setUndecorated(true);
        this.window.setResizable(false);
 
        device.setFullScreenWindow(this.window);
        if (displayMode != null &&
                device.isDisplayChangeSupported()) {
            try {
                device.setDisplayMode(displayMode);
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        }
    }
 
    public Window getFullScreenWindow() {
        return device.getFullScreenWindow();
    }
 
    public void restoreScreen() {
        Window window = device.getFullScreenWindow();
        if (this.window != null) {
            this.window.dispose();
        }
        device.setFullScreenWindow(null);
        Dimension dim = new Dimension(1024, 768);
        this.window.setResizable(false);
        this.window.setPreferredSize(dim);
        this.window.setSize(dim);
        this.window.setLocationRelativeTo(null);
        this.window.setUndecorated(false);
    // this.window.setTitle(g.trans("title"));
        this.window.setVisible(true);
    }
 
}