JavaFX ImageView load and display image

import javafx.application.Application;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.FlowPane;
import javafx.stage.Stage;

public class Main extends Application {

  public static void main(String[] args) {

    launch(args);/*from   www .  j a v  a2 s. c  om*/
  }

  public void start(Stage myStage) {
    myStage.setTitle("Display an Image");

    // Use a FlowPane for the root node.
    FlowPane rootNode = new FlowPane();

    // Use center alignment.
    rootNode.setAlignment(Pos.CENTER);

    Scene myScene = new Scene(rootNode, 300, 200);

    myStage.setScene(myScene);

    // Create an image.
    Image hourglass = new Image("your.png");

    // Create an image view that uses the image.
    ImageView aImage = new ImageView(hourglass);

    // Add the image to the scene graph.
    rootNode.getChildren().add(aImage);

    myStage.show();
  }
}