Java EE 6 : Paving The Path For The Future

Java EE 6 & GlassFish v3
Paving the path for future

Arun Gupta (blogs.sun.com/arungupta, @arungupta)
Sun Microsystems, Inc.

Java EE: Past & Present
Flexible
Ease of
Development Java EE 6
EJB Lite
Java EE 5 Restful WS
Web Ease of Web Beans
Services Development Extensibility
Annotations
J2EE 1.4 EJB 3.0
Web Services, Persistence API
Robustness Management, New and
Enterprise Deployment, Updated
Java J2EE 1.3 Async. Web Services
Platform CMP, Connector
Connector
Architecture ` Java EE 6
J2EE 1.2
Servlet, JSP, Web Profile
EJB, JMS
JPE RMI/IIOP
Project

Compatible Java EE 5 Implementations

3

Goals for the Java EE 6 Platform

 Flexible & Light-weight
 Extensible
 Embrace Open Source Frameworks
 Easier to use, develop on
 Continue on path set by Java EE 5

Java EE 6 is Flexible
 Decouple specifications to allow more
combinations
 Expands potential licensee ecosystem
 Profiles
− Targeted bundle of technologies
− Defined through the JCP
− Web Profile Already Defined
 Defined by the Java EE 6 Expert Group

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

Java EE 6 is Lightweight
 Pruning
− Make some technologies optional
 Pruned today, means
− Optional in the next release
− Deleted in the subsequent releases
 Pruned technologies will be marked in
Javadocs
 Technologies
− JAX-RPC, EJB 2.x Entity Beans, JAXR, JSR 88

Java EE 6 is Extensible
 Embrace open source frameworks
− Wicket, Lift, Spring, Struts, ...
 Zero-configuration, drag-and-drop for web
frameworks
− Servlets, servlet filters, context listeners for a
framework get discovered and registered
automatically
 Plugin libraries using web fragments

<web-fragment>
<filter>
<filter-name>wicket.helloworld</filter-name>
<filter-class>org.apache.wicket.protocol.http.WicketFilter</filter-class>
<init-param>
<param-name>applicationClassName</param-name>
<param-value>...</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>wicket.helloworld</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-fragment>

http://blogs.sun.com/arungupta/entry/totd_91_applying_java_ee

<web-fragment>
<filter>
<filter-name>LiftFilter</filter-name>
<display-name>Lift Filter</display-name>
<description>The Filter that intercepts lift calls</description>
<filter-class>net.liftweb.http.LiftFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>LiftFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-fragment>

http://blogs.sun.com/arungupta/entry/totd_101_applying_servlet_3

Java EE 6 & Ease-of-development
 Continue advancements of Java EE 5
 Primary focus: Web Tier
 General principles
− Annotation-based programming model
− Reduce or eliminate need for DD
− Traditional API for advanced users

EoD: EJB Simplified Packaging
Java EE 5 Java EE 6
foo.war
foo.ear
WEB-INF/classes
foo_web.war com.sun.FooServlet
com.sun.TickTock
WEB-INF/web.xml com.sun.FooBean
WEB-INF/classes com.sun.FooHelper
com.sun.FooServlet
com.sun.TickTock

foo_ejb.jar
com.sun.FooBean
com.sun.FooHelper
web.xml ?
http://blogs.sun.com/arungupta/entry/totd_95_ejb_3_1

EoD: Servlets
Servlet in Java EE 5: Two Files

package com.sun;
<web-app> public class MyServlet extends
<servlet>
HttpServlet {
<servlet-name>MyServlet
public void
</servlet-name> doGet(HttpServletRequest
<servlet-class> req,HttpServletResponse res)
com.sun.MyServlet {
</servlet-class>
</servlet> ...
<servlet-mapping>
<servlet-name>MyServlet }
</servlet-name>
<url-pattern>/myApp/* ...
</url-pattern> }
</servlet-mapping>
...
</web-app>

EoD: Servlets in Java EE 6

package com.sun;
@WebServlet(name=”MyServlet”, urlPattern=”/myApp/*”)
public class MyServlet extends HttpServlet {
public void doGet(HttpServletRequest req,
HttpServletResponse res)
{
...
}

http://blogs.sun.com/arungupta/entry/totd_81_getting_started_with

Java EE 6 - Done
 Specifications approved by the JCP (Dec 1)
 Reference Implementation is GlassFish v3
(Dec 10)
 TCK (Dec 10)

Java EE 6 Specifications
 The Platform
 Java EE 6 Web Profile 1.0
 Managed Beans 1.0

New
 Context and Dependency Injection for Java EE
(JSR 299)
 Bean Validation (JSR 303)
 Java API for RESTful Web Services (JSR 311)
 Dependency Injection for Java (JSR 330)

Extreme Makeover
 Java Server Faces 2.0 (JSR 314)
 Java Servlets 3.0 (JSR 315)
 Java Persistence 2.0 (JSR 317)
 Enterprise Java Beans 3.1 & Interceptors 1.1
(JSR 318)
 Java EE Connector Architecture 1.6 (JSR 322)

Updates
 Java API for XML-based Web Services 2.2 (JSR 224)
 Java API for XML Binding 2.2 (JSR 222)
 Web Services Metadata MR3 (JSR 181)
 JSP 2.2/EL 2.2 (JSR 245)
 Web Services for Java EE 1.3 (JSR 109)
 Common Annotations 1.1 (JSR 250)
 Java Authorization Contract for Containers 1.3 (JSR 115)
 Java Authentication Service Provider Interface for Containers 1.0 (JSR
196)

As is
 JDBC 3.0 API
 Java Naming and Directory Interface 1.2
 Java Message Service 1.1
 Java Transaction API 1.1
 Java Transaction Service 1.0
 JavaMail API Specification 1.4
 JavaBeans Activation Framework 1.1
 Java API for XML Processing 1.3
 Java API for XML-based RPC 1.1
 SOAP with Attachments API for Java 1.3
 Java API for XML Registries 1.0
 Java EE Management Specification 1.1 (JSR 77)
 Java EE Deployment Specification 1.2 (JSR 88)
 Java Management Extensions 1.2
 Java Authentication and Authorization Service 1.0
 Debugging Support for Other Languages (JSR 45)
 Standard Tag Library for JSP 1.2 (JSR 52)
 Streaming API for XML 1.0 (JSR 173)

IDE Support
 NetBeans 6.8
 Eclipse 3.4+
 IntelliJ 9.0

Future Directions
 JNLP-ize Java EE app client
 Java EE SPI
− - Allow service providers and other system level
components to be plugged in

Java EE 6 Training & Certification
 Java EE6 Training Curriculum - Feb 2010
 Java EE6 Certifications available - Mar 2010
 Register your interest in the courses and
certifications and receive information about
promotions
− https://dct.sun.com/dct/forms/reg_us_1611_480_0.jsp

Java EE Adoption Metrics
 Over 10 million downloads of Java EE SDKs annually
 Amazon search for J2EE yields 4,167 books (367)
 Amazon search for Java EE 1,681 books (448)
 Java the world's most used programing language
 Monster lists over 2,300 available Java EE / J2EE jobs
 In the past four years:
− JBoss purchased by Red Hat for 500 million
− BEA purchased by Oracle for 7 Billion

24

Java EE Adoption
Y/Y Download Growth
Over 18M
Downloads
08/.../08
12,000,000

since FY'06 10,000,000

8,000,000

Active Users 6,000,000
Dow nloads

4,000,000

2,000,000

0
FY 06 FY 07 FY 08 FY 09

Java EE: Scales as you scale

Java EE/ J2EE
Java EE/ J2EE

26
For today's Tiny is Tomorrow's Mega

What is GlassFish ?
 A community
− Users, Partners, Testers, Developers, ...
− Started in 2005 on java.net
 Application Server
− Enterprise Quality and Open Source (CDDL &
GPL v2)
− Java EE Reference Implementation
− Full Commercial Support from Sun

Sun GlassFish Enterprise Server
Enterprise Manager

Customer
Advocate eLearning
Credit

Customer Focused 24x7 Support
Support Team

GlassFish
Sun VIP
Open Source
Interoperability Patches &
Application Server
Support Upgrades
28

GlassFish v3
 Modular:
− Maven 2 – Build & Module description
− Felix – OSGi runtime (216 bundles)
− Allow any type of Container to be plugged
 Start Container and Services on demand
 Embeddable: runs in-VM
 Extensible
− Rails, Grails, Django, ...
29

Dynamic Languages & Frameworks

http://glassfish-scripting.dev.java.net
30

Rails Deployment Choices

Credits: http://birdwatchersdigest.com

31

Demo
NetBeans / Eclipse & Java EE 6

http://blogs.sun.com/arungupta/entry/screencast_27_simple_web_application
http://blogs.sun.com/arungupta/entry/screencast_28_simple_web_application
http://blogs.sun.com/arungupta/entry/screencast_26_develop_run_debug/
http://blogs.sun.com/arungupta/entry/totd_93_getting_started_with/
http://blogs.sun.com/arungupta/entry/totd_94_a_simple_java
http://blogs.sun.com/arungupta/entry/totd_95_ejb_3_1
http://blogs.sun.com/arungupta/entry/totd_102_java_ee_6
http://blogs.sun.com/arungupta/entry/totd_99_creating_a_java
http://blog.arungupta.me/2008/11/screencast-28-simple-web-application-using-eclipse-and-
glassfish-v3-prelude/

32

Embeddable GlassFish
public void testServlet() throws Exception {
int port = 9999;
GlassFish glassfish = newGlassFish(port);
URL url = new URL("http://localhost:" + port + "/" + NAME +
"/SimpleServlet");
BufferedReader br = new BufferedReader(
new InputStreamReader(
url.openConnection().getInputStream()));
assertEquals("Wow, I'm embedded!", br.readLine());
glassfish.stop();
}
33

Embeddable GlassFish
private GlassFish newGlassFish(int port) throws Exception {
GlassFish glassfish = new GlassFish(port);
ScatteredWar war = new ScatteredWar(NAME,
new File("src/main/resources"),
new File("src/main/resources/WEB-INF/web.xml"),
Collections.singleton(new
File("target/classes").toURI().toURL()));
glassfish.deploy(war);
System.out.println("Ready ...");
return glassfish;
}
34

CLI-based Administration
 “asadmin” CLI utility
 Administrative commands can be added with

each container :
@Service(name=”myCommand”)
public class ChangeRandomCtr implements AdminCommand {
@Param
String s1;
@Param
String s2;
…}

−Available as :
asadmin myCommand –s1 foo –s2 bar
35

Demo
GlassFish v3 Administration

37

Light Weight & On-demand Monitoring
 Event-driven light-weight and non-intrusive
monitoring
 Modules provide domain specific probes
(monitoring events)
− EJB, Web, Connector, JPA, Jersey, Orb, Ruby
 End-to-end monitoring on Solaris using
DTrace
rd
 3 party scripting clients
− JavaScript to begin with 38

Demo
GlassFish v3 Monitoring

http://blogs.sun.com/arungupta/entry/totd_104_glassfish_v3_monitoring
39

REST Interface
REST interface to management and


monitoring data
−Configuration data, Commands invocation (start/stop
instance, deploy, undeploy, ...), CRUD resources (JMS,
JDBC, ...)
−localhost:4848/management/domain

−localhost:4848/monitoring/domain

GET, POST, DELETE methods
XML, JSON, HTML reps

40

Demo
GlassFish v3 REST Interface

http://blogs.sun.com/arungupta/entry/totd_113_javafx_front_end
http://blogs.sun.com/arungupta/entry/totd_116_glassfish_v3_administration
41

References
 glassfish.org
 sun.com/glassfish
 blogs.sun.com/theaquarium
 twitter.com/glassfish
 glassfish@sun.com

Java EE 6 : Paving The Path For The Future

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