JavaFX Uni Parthenope

JavaFX: la piattaforma
Java per le Rich Internet
Applications

Corrado De Bari
Software & Java Ambassador

Sun Microsystems Italia Spa

Agenda
● What's news in Java Runtime Environment
● JavaFX Technology
– Key Features
– Architecture & Tools
– JavaFX Script tutorial

Sun Microsystems Proprietary
TechDay 09 – UniParthenope, 4 giugno 2009 2

New Features in 6u10
● JavaKernel: faster download and install
● Java Quick Starter: faster applet start
● Rewritten Java Plugin
– Applets run in own JVM
– Unified desktop / browser deployment
– Draggable Applet
– Scriptable applets
– Direct3D© support

Try: http://download.java.net/javadesktop/plugin2/wwj/

TechDay 09 – UniParthenope, 4 giugno 2009

Architectural Overview

Applet 1

Applet 2

HTML Web Page Applet 3



● Ground-up rewrite of the support for applets in the web browser
● Applets are no longer executed in a Java Virtual Machine (JVM™) inside the
web browser
● Instead, a separate JVM machine process is launched to execute the applets
● By default, only one JVM machine is launched
– Same resource consumption and sharing properties as the “classic”
Java technology-based Plug-In
● Opportunity to launch more than one JVM machine
– To support per-applet command-line arguments, heap size requests, and
more
● Architectural similarities to Java Web Start software, but tighter browser
integration



Client JVM 1
OS Process 2
Thin Server JVM

OS Process 1
Client JVM 2
OS Process 3

Compatibility
● Backward compatibility based on runs of hundreds of
applets from throughout the web
● Applet lifecycle unchanged
– init(), start(), stop(), destroy()
● All services supported:
Browser proxy settings Browser certificate store
Browser authenticator Browser cookie store
Printing
Java/JavaScript integration


JNLP Support
Most significant new feature
● Unifies deployment between Java Web Start and the
Java Plug-In
– Simply choose the top-level container (Frame /
Applet)
● Incorporate JNLP extensions trivially in applets
– JavaFX run-time libraries, JOGL, Java 3D, JAI
● Use JNLP APIs from applets
– PersistenceService, DownloadService, ...
● Full support for JVM command-line arguments, JRE
version selection, JRE auto-download

Basic JNLP Example

<applet width=”500” height=”500”>
<param name=”jnlp_href”
value=”my_applet.jnlp”>
</applet>


Basic JNLP Example
<?xml version=”1.0” encoding=”UTF-8”?>
<jnlp href=”my_applet.jnlp”>
<information>
<title=”My Applet”>
<vendor>My Company, Inc.</vendor>
<offline-allowed />
</information>
<resources>
<j2se version=”1.4+”
href=”http://java.sun.com/products/autodl/j2se” />
<jar href=”my_jar_1.jar” main=”true” />
<jar href=”my_jar_2.jar” />
</resources>
<applet-desc name=”My Applet”
main-class=”com.mycompany.MyApplet”
width=”1”
height=”1” />
</jnlp>

Applet-Desc Tag
<?xml version=”1.0” encoding=”UTF-8”?>
<jnlp href=”my_applet.jnlp”>
<information>
<title=”My Applet”>
<vendor>My Company, Inc.</vendor>
<offline-allowed />
</information>
<resources>
<j2se version=”1.4+”
href=”http://java.sun.com/products/autodl/j2se” />
<jar href=”my_jar_1.jar” main=”true” />
<jar href=”my_jar_2.jar” />
</resources>
<applet-desc name=”My Applet”
main-class=”com.mycompany.MyApplet”
width=”1”
height=”1” />
</jnlp>

Applet-Desc Tag

● width and height are ignored
– Browser always overrides because it knows best how
big the applet needs to be
– Relative width and height supported in applet tag (i.e.,
“50%”)
● main-class parameter always used
– code parameter from applet tag is ignored
– Enables backward compatibility mechanisms
(described later)


Java / JavaScript Support
● Completely rewritten Java / JavaScript integration
● More complete, reliable and portable than before
● Formerly Mozilla-specific functionality now working in
Internet Explorer
– Static method access
– Construction of new Java objects from JavaScript
●
Respecifying and reintroducing “LiveConnect”


DOM Access
Enables AJAX-style web apps using Java language
● DOM access via W3C APIs has been rewritten
– Built on top of new Java/JavaScript support
● New, much simpler bootstrapping entry point
org.w3c.dom.Document doc =
com.sun.java.browser.plugin2.DOM.
getDocument(applet);
● Can then cast to HTMLDocument and descend into the DOM
● Perform operations from any thread
– Underlying Java/JavaScript bridge is thread safe

Support for Advanced Applets
● Control over Java heap size
● Control over Java 2D acceleration parameters
● Ideal environment for running 3D content
● JOGL applet examples
– NASA World Wind Java:
● http://download.java.net/javadesktop/plugin2/wwj/
– Jake2 – Bytonic Software:
● http://www.bytonic.de/downloads/jake2_jogl11.jnlp


JavaFX
JavaFX is THE platform for creating and
delivering
Rich Internet Applications
across all the screens of your life

JavaFX is Powered by Java

Key Features
✔ One-stop shop RIA platform for all screens:
✔ Build engaging visual experiences across desktop,
browser and mobile with a unified development and
deployment model.
✔ Broadest market reach:
✔ Distribute RIAs easily across billions of devices with the
power of Java.
✔ Designer-developer workflow:
✔ Dramatically shorten your production cycle for design
and development.


Key Features (Continued)
✔ Powerful runtime:
✔ Leverage the extreme ubiquity, power, performance
and security of the Java runtime.
✔ Break free from the browser:
✔ Drag-and drop a JavaFX application from the browser
to deploy to the desktop.
✔ Java technology compatibility:
✔ Preserve your investment by enabling the use of any
Java library within a JavaFX application.


What you can do: Simple Video Player
•Incorporating video in your application is as simple
as creating an instance of this component, setting a
few variables and including a link to your video
source.


3-D Display Shelf: the Perspective
Transform

•The PerspectiveTransform built into JavaFX
can be used to easily create 3-D effects


Flying Saucer

•The new out-of-process Java applet plugin
in Java SE 6 update 10 enables you to make
applets which can run outside of the browser.


Demo: JavaFX apps

http://www.javafx.com/samples/EffectsPlayground/webstart/EffectsPlayground.jnlp
http://www.javafx.com/samples/DraggableMP3Player/webstart/DraggableMP3Player.jnlp
http://www.javafx.com/samples/BrickBreaker/webstart/BrickBreaker.jnlp


JavaFX architecture


JavaFX roadmap
Desktop Product Line JavaFX
Desktop
(Winter 2008)
Mobile Product Line JavaFX
Mobile
(Spring 2009)

TV Product Line JavaFX TV
(Summer 2009)

Other Platforms With Partner platforms/OSs


JavaFX Tools: rel 1.2

NetBeans IDE 6.5.1 for JavaFX 1.2 JavaFX 1.2 Production Suite
✔ Windows XP, Windows Vista ✔ Adobe Illustrator CS3/CS4
✔ Mac OS X 10.4.10 minimum ✔ Adobe Photoshop CS3/CS4

✔ Ubuntu 8.04 LTE

✔ OpenSolaris 2009.06


JavaFX Tools
JavaFX 1.2 Plugin for Adobe
Photoshop and JavaFX 1.0
Plugin for Adobe Illustrator

JavaFX 1.2 Media Factory
✔SVG Importer/Transcoder
✔Viewer


How to Deploy

● Java Plugin
● Java Web Start
● JavaFX 1.0 Mobile Emulator


JavaFX APIs
● JavaFX Scene
– Node based GUI framework
● JavaFX Media
– Media player, native and cross platform codecs
● JavaFX Web Services
– REST-ful
– RSS
● JavaFX Profiles
– Common
– Desktop
– Mobile Sun Microsystems Proprietary

JavaFX Script
● Created for rapid and easy GUI creation
● Object-oriented
– Namespaces, Classes, attributes, functions and
operations
● Declarative syntax
● Both static-typing & type-inference
● Animation, data binding and event handing
built in


Example: Hello World in Swing
import javax.swing.*;

public class HelloWorldSwing {

public static void main(String[] args) {
JFrame frame = new JFrame(quot;HelloWorld Swingquot;);
final JLabel label = new JLabel(quot;Hello Worldquot;);
frame.getContentPane().add(label);
frame.setDefaultCloseOperation(
JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
}

Example: Hello World in JavaFX
Declarative Syntax
Frame {
title: quot;Hello World JavaFXquot;
width: 200
height: 100
visible: true
stage: Stage {
content: [Text {
font: Font {
size: 24
style: FontStyle.PLAIN
}
x: 10, y: 30
content: quot;Hello Worldquot;
}]
}
}


Class Definition

•Address class definition: The Address class
declares street, city, state, and zip instance
variables all of type String
class Address {
var street: String;
var city: String;
var state: String;
var zip: String;
}

Class Definition
•Customer class definition with functions -
functions are like methods in Java
class Customer {
var firstName: String;
var lastName: String;
var phoneNum: String;
var address: Address;

function printName() {
println(quot;Name: {firstName} {lastName}quot;);
}

function printPhoneNum(){
println(quot;Phone: {phoneNum}quot;);
}
}

Create an Object
•Nesting Address object inside Customer
object
def customer = Customer {
firstName: quot;Johnquot;;
lastName: quot;Doequot;;
phoneNum: quot;(408) 555-1212quot;;
address: Address {
street: quot;1 Main Streetquot;;
city: quot;Santa Claraquot;;
state: quot;CAquot;;
zip: quot;95050quot;;
}
}

Step by Step Process of Creating
a simple GUI
•JavaFX application that renders a green
rounded rectangle and a white circle with red
outline on the top of the rectangle


Step by Step Process of Creating a GUI
1.Add necessary imports
2.Create an Application window
3.Set the Scene
4.Create a Rectangle
5.Create a Circle
6.Change the code (so that the Circle gets
underneath the Rectangle)


1. Add Necessary Imports
import javafx.stage.Stage; // required to render a window
import javafx.scene.Scene; // required to display a circle and
// rectangle on a window
import javafx.scene.shape.Rectangle; // required to render the
rectangle
import javafx.scene.paint.Color; // required to fill and stroke the
// rectangle and circle with color
import javafx.scene.shape.Circle; // required to render the circle


2. Create an Application Window
•In order to display the graphics, you need to create a
window through Stage object literal
// Create a Stage object literal. Stage is required to render any object.
// The window should be big enough to display all of the rectangle and
// the circle. In this example, the window is a rectangle of 249 by 251
// pixels. To create a window of this size, with a quot;Declaring is Easyquot; title,
// declare these values within the curly brackets using the following
code:

Stage {
title: quot;Declaring Is Easy!quot;
width: 249
height: 251
visible: true
}

3. Set the Scene
•Within the stage, set the scene to hold Node
objects such as a circle or a rectangle
•The scene is a root area where you place
objects of the node type.
•The scene has content variable that is used
to hold the nodes.
•There are many different kinds of nodes,
such as graphical objects, text, and GUI
components.

3. Set the Scene (Continued)
•// The content of the window becomes filled with white
because
// white is a default fill color for a scene. The scene is
placed on top
// of the window.

Stage {

...
scene: Scene {
content: [ ]
}
}


4. Create a Rectangle
Stage {
...
scene: Scene {
content: [
// The x and y instance variables specify the pixel location of the
// rectangle, arcWidth and arcHeight define the roundness of
// corners, and the fill variable defines the color that fills the rectangle.
Rectangle {
x: 45 y: 35
width: 150 height: 150
arcWidth: 15 arcHeight: 15
fill: Color.GREEN
}
]
}
}


5. Create a Circle
Stage {
...
scene: Scene {
content: [
Rectangle {
...
},
// Because the rectangle is declared before any other objects, it is painted
// first. The rectangle will be behind any other objects painted later.
Circle{
centerX: 118
centerY: 110
radius: 83
fill: Color.WHITE
stroke: Color.RED
}
]
}
}


6. Place Circle Underneath Rectangle
Stage {
...
scene: Scene {
content: [
// Place the circle underneath the square. To do so, switch the order
// of the circle and square
Circle{
....
},
Rectangle {
...
}
]
}
}


Effects: DropShadow
Text {
effect: DropShadow {
offsetY: 3
color: Color.color(0.4, 0.4, 0.4)
};
...
},
Circle {
effect: DropShadow {
offsetY: 4
},
...
}

Images
ImageView = ImageView {
clip: Rectangle {
y: 30 x: 50
width: 350 height: 100
}
image: Image { url: quot;...quot;}
}


JavaFX Script: Data Binding

// will be modified elsewhere
var count:Integer = new Integer();

// The label text is bound to the count
Label {
text: bind count.value.toString( )
}


JavaFX Script: Event Triggers

// Triggering validation of the
// number of wheels on a vehicle
attribute numWheels:Integer = 4
on replace (oldValue) {
if (numWheels <= 0) {
System.out.println(quot;{numWheels} wheels not valid,
changing back to {oldValue}!quot;);
numWheels = oldValue;
}
};


Resources
● JavaPassion Trainings (Source of this presentation):
– http://www.javapassion.com/javafx
● http://www.javafx.com/
● http://java.sun.com/javase/downloads/index.jsp
● http://java.sun.com/javase/6/webnotes/6u10.html
● http://scenegraph.dev.java.net/
● http://jogl.dev.java.net/


JavaFX Uni Parthenope

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