JavaFX Line create shape

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.layout.StackPane;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Line;
import javafx.stage.Stage;

public class Main extends Application {
   @Override/*  w  w w. java  2  s  .  c om*/
   public void start(Stage primaryStage) {
      final double WIDTH = 300.0;
      final double HEIGHT = 400.0;

      Pane container = new Pane();

      Line bottomEdge = new Line(0, HEIGHT, WIDTH, HEIGHT);

      double xSpot = 0;
      for (int i = 0; i < 9; i++) {
         container.getChildren().add(new Line(xSpot, HEIGHT, xSpot, HEIGHT / 5 * 4));
         xSpot += WIDTH / 8;
      }

      Line leftEntry = new Line();
      leftEntry.setStartX(WIDTH / 2 - WIDTH / 16);
      leftEntry.setStartY(0);
      leftEntry.setEndX(WIDTH / 2 - WIDTH / 16);
      leftEntry.setEndY(HEIGHT / 9);

      Line rightEntry = new Line();
      rightEntry.setStartX(WIDTH / 2 + WIDTH / 16);
      rightEntry.setStartY(0);
      rightEntry.setEndX(WIDTH / 2 + WIDTH / 16);
      rightEntry.setEndY(HEIGHT / 9);

      // draw slanted side lines
      Line leftSlant = new Line(0, HEIGHT / 5 * 4, leftEntry.getEndX(), leftEntry.getEndY());
      Line rightSlant = new Line(WIDTH, HEIGHT / 5 * 4, rightEntry.getEndX(), rightEntry.getEndY());

      // draw pins
      for (int row = 7, mod = 0; row >= 1; row--, mod++) {
         xSpot = (WIDTH / 8) + (WIDTH / 16 * mod);
         double ySpot = (HEIGHT / 5 * 4) - (HEIGHT / 9 * mod);
         for (int col = row; col >= 1; col--) {
            Circle c = new Circle(xSpot, ySpot, HEIGHT / 75);
            xSpot += WIDTH / 8;
            container.getChildren().add(c);
         }
      }

      container.getChildren().addAll(bottomEdge, leftEntry, rightEntry, leftSlant, rightSlant);

      StackPane pane = new StackPane();
      pane.setPadding(new Insets(20));
      pane.getChildren().add(container);

      Scene scene = new Scene(pane);
      primaryStage.setTitle("java2s.com");
      primaryStage.setScene(scene);
      primaryStage.setResizable(false);
      primaryStage.show();
   }

   public static void main(String[] args) {
      Application.launch(args);
   }
}