I hope you to help me to resolve this problem , I try make this code for play video from an Button Open like option file in all the program but it doesn't work. I don't know what's wrong.
This is my code:
btn.setOnAction(new EventHandler<ActionEvent>() {
        @Override
        public void handle(ActionEvent event) {
            FileChooser chooser = new FileChooser();
            FileChooser.ExtensionFilter filter = new FileChooser.ExtensionFilter("select your media(*.mp4)", "*.mp4");
            chooser.getExtensionFilters().add(filter);
            File file = chooser.showOpenDialog(primaryStage);
            if ( file !=null){
                Media source = new Media(file.getPath());
                MediaPlayer player = new MediaPlayer(source);
                MediaView view = new MediaView(player);
                root.getChildren().add(view);
                player.play();
            }
             else {
                label.setText("vide ");
            }
 
    