JavaFX Canvas GraphicsContext draw round rectangle

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.layout.Pane;
import javafx.stage.Stage;

public class Main extends Application {
  public static void main(String[] args) {
    Application.launch(args);/*from   www . j  a  va2s  .c o  m*/
  }

  @Override
  public void start(Stage stage) {
    // Create a canvas
    Canvas canvas = new Canvas(300, 100);

    // Get the graphics context of the canvas
    GraphicsContext gc = canvas.getGraphicsContext2D();

    // Draw a rounded rectangle
    gc.strokeRoundRect(10, 10, 50, 50, 10, 10);

    Pane root = new Pane();
    root.getChildren().add(canvas);
    Scene scene = new Scene(root);
    stage.setScene(scene);
    stage.setTitle("Drawing on a Canvas");
    stage.show();
  }
}