JavaFX 2.0 Exercise: fill with LinearGradient

package javafx_exdraw;

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.scene.paint.CycleMethod;
import javafx.scene.paint.LinearGradient;
import javafx.scene.paint.LinearGradientBuilder;
import javafx.scene.paint.Stop;
import javafx.scene.shape.*;
import javafx.stage.Stage;

/**
*
* @web http://java-buddy.blogspot.com/
*/
public class JavaFX_exDraw extends Application {

 /**
  * @param args the command line arguments
  */
 public static void main(String[] args) {
     launch(args);
 }

 @Override
 public void start(Stage primaryStage) {
     primaryStage.setTitle("java-buddy.blogspot.com");
     Group root = new Group();
     Scene scene = new Scene(root, 400, 300, Color.WHITE);
  
     LinearGradient linearGradient_NO_CYCLE
             = LinearGradientBuilder.create()
             .startX(50)
             .startY(50)
             .endX(200)
             .endY(200)
             .proportional(false)
             .cycleMethod(CycleMethod.NO_CYCLE)
             .stops(
                 new Stop(0.1f, Color.rgb(255, 0, 0, 0.9)),
                 new Stop(1.0f, Color.rgb(0, 0, 255, 0.9)))
             .build();
  
     LinearGradient linearGradient_REFLECT
             = LinearGradientBuilder.create()
             .startX(275)
             .startY(50)
             .endX(250)
             .endY(100)
             .proportional(false)
             .cycleMethod(CycleMethod.REFLECT)
             .stops(
                 new Stop(0.1f, Color.rgb(255, 0, 255, 0.9)),
                 new Stop(1.0f, Color.rgb(0, 255, 0, 1.0)))
             .build();
  
     Rectangle rect1 = RectangleBuilder.create()
             .x(50)
             .y(50)
             .width(100)
             .height(100)
             .build();
     rect1.setFill(linearGradient_NO_CYCLE);
  
     Rectangle rect2 = RectangleBuilder.create()
             .x(100)
             .y(100)
             .width(100)
             .height(100)
             .fill(linearGradient_NO_CYCLE)
             .build();
  
     Rectangle roundRect = RectangleBuilder.create()
             .x(250)
             .y(50)
             .width(100)
             .height(200)
             .arcWidth(30)
             .arcHeight(30)
             .fill(linearGradient_REFLECT)
             .build();
  
     root.getChildren().add(rect1);
     root.getChildren().add(rect2);
     root.getChildren().add(roundRect);
  
     primaryStage.setScene(scene);
     primaryStage.show();
 }
}