JavaFX 8: Introduction by Example

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• JavaFX 8: Introduction by Example, Second Edition

• By: Carl Dea; Mark Heckler; Gerrit Grunwald; José Pereda; Sean M. Phillips

• Publisher: Apress

• Pub. Date: June 03, 2014

• Print ISBN-10: 1-4302-6460-8

• Print ISBN-13: 978-1-4302-6460-6

• Pages in Print Edition: 420

• Subscriber Rating: [2 Ratings] Subscriber Reviews

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关键词：introduction troduction example intro ExamP

1. What is JavaFX?
   
2. 
   
3. JavaFX is Java’s next-generation graphical user interface (GUI) toolkit that allows developers to rapidly build rich cross-platform applications. Built from the ground up, JavaFX takes advantage of modern GPUs through hardware-accelerated graphics while providing well-designed programming interfaces enabling developers to combine graphics, animation, and UI controls. The new JavaFX 8 is a pure Java language application programming interface (API). The goal of JavaFX is to be used across many types of devices, such as embedded devices, smartphones, TVs, tablet computers, and desktops.
   
4. 
   
5. Nandini Ramani of Oracle plainly states the intended direction of JavaFX as a platform in the following excerpt from the screencast Introducing JavaFX:
   
6. 
   
7. The industry is moving toward multi-core/multi-threading platforms with GPUs. JavaFX leverages these attributes to improve execution efficiency and UI design flexibility. Our initial goal is to give architects and developers of enterprise applications a set of tools and APIs to help them build better data-driven business applications.

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1. Listing 2-4. DrawingText.java
   
2. 
   
3. @Override
   
4. public void start(Stage primaryStage) {
   
5.     primaryStage.setTitle("Chapter 2 Drawing Text");
   
6.     Group root = new Group();
   
7.     Scene scene = new Scene(root, 300, 250, Color.WHITE);
   
8.     Random rand = new Random(System.currentTimeMillis());
   
9.     for (int i = 0; i < 100; i++) {
   
10.         int x = rand.nextInt((int) scene.getWidth());
    
11.         int y = rand.nextInt((int) scene.getHeight());
    
12.         int red = rand.nextInt(255);
    
13.         int green = rand.nextInt(255);
    
14.         int blue = rand.nextInt(255);
    
15. 
    
16.         Text text = new Text(x, y, "JavaFX 8");
    
17. 
    
18.         int rot = rand.nextInt(360);
    
19.         text.setFill(Color.rgb(red, green, blue, .99));
    
20.         text.setRotate(rot);
    
21.         root.getChildren().add(text);
    
22.     }
    
23. 
    
24.     primaryStage.setScene(scene);
    
25.     primaryStage.show();
    
26. }

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1. Listing 3-1. A Button’s OnAction Set with an Anonymous Inner Class
   
2. 
   
3. Button btn = new Button();
   
4. btn.setOnAction(new EventHandler<ActionEvent>() {
   
5.     public void handle(ActionEvent event) {
   
6.        System.out.println("Hello World");
   
7.     }
   
8. });

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1. Listing 3-3. One Statement with an Explicit Return, and the Other with an Implicit Return
   
2. 
   
3. x -> { return x * x; }   // must explicitly return result
   
4. x -> x * x;              // evaluates and implicitly returns result

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1. Listing 3-4. Three Syntactically Equivalent Lambda Expressions to Set Action Code on a JavaFX Button
   
2. 
   
3. btn.setOnAction( (ActionEvent event) -> {System.out.println("Hello World"); } );
   
4. btn.setOnAction( (event) -> System.out.println("Hello World") );
   
5. btn.setOnAction( event -> System.out.println("Hello World") );

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