Powering the Next Generation Services with Java Platform - Spark IT 2010

1. Powering the Next Generation
TM
Services with Java Platform
Arun Gupta, GlassFish Guy
Oracle Corp
blogs.sun.com/arungupta, @arungupta

2. #sparkit
Indian Top-10
trends on
twitter

3. Evolution of Java
JDK 1.4 JDK 1.6
JDK 1.3
JDK 1.1 (NIO) (Rhino, JAX-WS)
(Hotspot)
Java released on
wicked.neato.org
J2EE 1.4
Jini J2EE 1.2 (Web Services) JavaFX 1.0 Java EE 6
'95 '96 '97 '98 '99 '00 '01 '02 '03 '04 '05 '06 '07 '08 '09 '10 '11
Java JSP / J2EE 1.3 Java EE 5
Card Servlets (Connectors) (Ease-of-use)
2.0
JDK 1.0 J2SE 1.2 J2SE 1.5 J2SE 1.7
(Generics, (Modularity,
Annotation) Dyn Langs,
Coin)

4. The Java Eco-System
6.5+ M 250+ M 850+ K > 2.6 Billion
$2.8B Java Dev. JavaFX GlassFish Java Powered
In Java runtime Downloads Phones
$3B world wide Per month
App Servers
Java Mobile
Game Market
> 6 Billion
> 40.0 Java Cards
Million Deployed
Multi-Function 850+ M Blu-ray Disc Digital TVs &
Printers PCs with Devices Set-Top Boxes
Java

6. Standards-based

7. Role specialization: Communication,
Enterprise, BPM, Web 2.0, ..

8. Converged
Applications

9. Credits: http://scrapetv.com/News/News%20Pages/Business/images-2/one-billion-dollars.jpg

10. Robust

11. http://langpop.com/

12. Service
Composition
12

13. • Enterprise Service Bus
• Service engines: BPEL, Intelligent Event Processing,
XSLT, Data Mashup, Encoding, etc
• Wide range of adapters: communications, databases,
EIS, etc.
• Very easy to use through Netbeans IDE

14. SOAP Web Services
• High-performance, extensible, easy-to-use Web
services stack
• Secure, Reliable and Transactions Web services
• Interoperable with .NET
• Transport agnostic
• Very easy to use through IDEs support
• https://metro.dev.java.net/

16. RESTful Web Services
• Annotation-driven API to build RESTful Web services
> Resources / Methods / Representations
• Rapid creation of RESTful WS from JPA entity classes
and patterns
• Generation of JavaScript client stubs
• Test client generation for testing RESTful web services
• Very easy to use through IDEs support
• Jersey, RESTEasy, Restlet, CXF, ...

17. SIP Applications
• Standard (JSR 116, 289) for developing and deploying
communications applications
• Adds SIP servlet support on top of Java EE / GlassFish
• Allows Converged Java EE, SIP applications
• Test client generation for testing SIP services.
• Very easy to use through IDEs support
• https://sailfin.dev.java.net/

18. Java EE is a monolith
One size fits all

19. Java EE 6 Web Profile 1.0
●Fully functional mid-sized profile
● Actively discussed in the Java EE 6 Expert Group and
outside it
●
Technologies
●
Servlets 3.0, JSP 2.2, EL 2.2, Debugging Support for Other Languages
1.0, JSTL 1.2, JSF 2.0, Common Annotations 1.1, EJB 3.1 Lite, JTA 1.1,
JPA 2.0, Bean Validation 1.0, Managed Beans 1.0, Interceptors 1.1,
Context & Dependency Injection 1.0, Dependency Injection for Java 1.0

20. Extensible

22. Java EE 6 Ease-of-use
• More annotations
• More POJOs
• Less XML
> Optional “web.xml”, “faces-
config.xml”
• Simplified packaging

23. Ajax
• Java Server Faces 2.0
> Integrated Ajax support
> Facelets as templating language

24. Reverse Ajax / Comet
• Comet
> Techniques that enable a server to push data to client browsers
through an HTTP open line of communication
• Atmosphere: POJO-based portable framework

25. JVM

27. Co-hosting Java EE & Dynamic Langs
• GlassFish runs dynamic language applications along side
Java EE apps with security, scalability, Java language
and APIs benefits.

28. Pluggable Web Framework
JSF Grails ... Rails Merb ... Django ...
Servlet Spec Rack WSGI
Web JRuby Jython
Container Container Container
V3 Kernel
Grizzly
JVM
Key GlassFish v3 Modules Java Framework Python Framework
Web Framework
Ruby Framework
Interface

30. JavaFX Vision
JavaFX is the platform for creating and delivering
Rich Internet Applications
across all the screens of your life
JavaFX is Powered by Java

31. Java FX
• http://javafx.com/
• Declarative Scripting Language
> Syntax Java-like with shades of JavaScript
> For content designers and media engineers
• Facilitates rapid GUI development
• Runs on the Java Virtual Machine
• Richness of Java development

32. JavaFX Authoring Tool

34. Space is big. Really big. You just won’t believe
how vastly, hugely, mind bogglingly big it is. I
mean, you may think it’s a long way down the
road to the chemist, but that’s just peanuts to
space.
— Douglas Adams, The Hitchhiker’s Guide to the Galaxy

35. Project Jigsaw

36. JDK 7 #1: Modularity
• Address the “jar hell”
• Enables scale down
• Improve performance
> Download & Startup Time
• Dependencies can now be more clearly defined
JDBC
Logging NIO
JavaBeans AWT, ...
JMX
JNDI Applet
RMI
CORBA

37. Declaring that a class belongs to a module
module M;
package P;
public class Foo { ... }
Defining a module in module-info.java file
module M @1.0 {
requires N @2.1;
requires L @0.5;
}

38. JDK 7 #2: Multi-Lingual VM
• InvokeDynamic / JSR 292
• New bytecode for Dynamic languages
• 2-3x more efficient code generation

39. JDK 7 - Other Key Features
• G1 GC: Lower pause times & better predictability
• Project Lambda (aka Closures)
• NIO.2: File system & Asynchronous APIs
> Directory search, Symbolic Links, Listen to changes in file
system
• Some change ...

40. JDK 7 #3: Project Coin
Credits: http://www.flickr.com/photos/joeshlabotnik/2143212474/

41. Collection of Literals
final List<Integer> piDigits =
Collections.unmodifiableList(Arrays.asList(
3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5, 9 ));
final List<Integer> piDigits = [3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5, 9];
final Set<Integer> primes = { 2, 7, 31, 127, 8191, 131071,
524287 };

42. String in “switch” statements
String s = ...
switch(s) {
case "foo":
processFoo(s);
break;
}

43. String in “switch” statements
String s = ...
switch(s) {
case "quux":
processQuux(s);
// fall-through
case "foo":
case "bar":
processFooOrBar(s);
break;
case "baz":
processBaz(s);
// fall-through
default:
processDefault(s);
break;
}

44. Automatic Resource Management
static String readFirstLineFromFile(String path) throws IOException {
BufferedReader br = new BufferedReader(new FileReader(path));
try {
return br.readLine();
} finally {
br.close();
}
}
static String readFirstLineFromFile2(String path) throws IOException {
try (BufferedReader br = new BufferedReader(new FileReader(path)) {
return br.readLine();
}
}

45. Improved Type Inference for
Generic Instance Creation
Map<String, List<String>> anagrams =
new HashMap<String, List<String>>();
Map<String, List<String>> anagrams = new HashMap<>();

46. NetBeans 6.9
• Visual JavaFX GUI Editing
• JDK 7
• Spring 3
• Zend and CakePHP
• Improved productivity with Java EE 6
• ...
http://wiki.netbeans.org/NetBeans_69

47. Development
• Team collaboration
> Presence
> Chat
> Continuous integration
> Issue Tracking
> Team Member Status Resources
• Cloud Plug-In
• Web on Web
• ...

48. Powering the Next Generation
TM
Services with Java Platform
Arun Gupta, GlassFish Guy
Oracle Corp
blogs.sun.com/arungupta, @arungupta
48