How to import many images instantly using javafx?

How do I upload over 500 images with large sizes in javafx? How to import many images instantly using javafx?

@Override public void start(Stage primaryStage) { primaryStage.setTitle("TaggingPaneView");

    ScrollPane root = new ScrollPane();
    root.setCacheHint(CacheHint.SPEED);

    GridPane gridpane = new GridPane();
    gridpane.setPadding(new Insets(5));
    gridpane.setHgap(10);
    gridpane.setVgap(10);
    gridpane.setCacheHint(CacheHint.SPEED);

    ImageView imv;
    HBox pictureRegion = new HBox();
    Image image;
    int imageCol = 0;
    int imageRow = 0;

    for (int i = 0; i < 50; i++) {
        image = new Image("image1.jpg");
        imv = new ImageView();
        imv.setImage(image);
        imv.setCacheHint(CacheHint.SPEED);
        imv.setImage(image);
        imv.setFitWidth(100);
        imv.setPreserveRatio(true);
        imv.setSmooth(true);
        imv.setCache(true);
        imageCol++;


        pictureRegion.getChildren().add(imv);
        gridpane.add(imv, imageCol, imageRow);
        if (imageCol > 5) {
            // Reset Column
            imageCol = 0;
            // Next Row
            imageRow++;

        }
    }
    root.setContent(gridpane);
    Scene scene = new Scene(root, 600, 330, Color.WHITE);


    primaryStage.setScene(scene);
    primaryStage.show();
}