CurveDemo.java

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.text.Text;
import javafx.scene.shape.Circle; 
import javafx.scene.paint.Color;
import javafx.scene.shape.*;
import javafx.stage.Stage;

public class CurveDemo extends Application {
  @Override // Override the start method in the Application class
  public void start(Stage primaryStage) {
    Pane pane = new Pane(); // PaneBuilder.create().build(); 
    
    // Create a QuadCurve
    QuadCurve quadCurve = new QuadCurve(10, 80, 40, 20, 150, 56);
    quadCurve.setFill(Color.WHITE);
    quadCurve.setStroke(Color.BLACK);

    pane.getChildren().addAll(quadCurve, new Circle(40, 20, 6),
      new Text(40 + 5, 20 - 5, "Control point"));
    
    // Create a CubicCurve
    CubicCurve cubicCurve = new CubicCurve
      (200, 80, 240, 20, 350, 156, 450, 80);
    cubicCurve.setFill(Color.WHITE);
    cubicCurve.setStroke(Color.BLACK);

    pane.getChildren().addAll(cubicCurve, new Circle(240, 20, 6),
      new Text(240 + 5, 20 - 5, "Control point 1"),
      new Circle(350, 156, 6),
      new Text(350 + 5, 156 - 5, "Control point 2"));

    Scene scene = new Scene(pane, 500, 200);           
    primaryStage.setTitle("CurveDemo"); // Set the window title
    primaryStage.setScene(scene); // Place the scene in the window
    primaryStage.show(); // Display the window
  }

  // Launch the program from command-line
  public static void main(String[] args) {
    launch(args);
  }
}