3. The following is intended to outline our general
product direction. It is intended for information
purposes only, and may not be incorporated
into any contract. It is not a commitment to
deliver any material, code, or functionality, and
should not be relied upon in making purchasing
decisions.
The development, release, and timing of any
features or functionality described for Oracle's
products remains at the sole discretion of
Oracle.
8. What is New in Java EE 6?
• Several new APIs
• Web profile
• Pluggability/extensibility
• Dependency injection
• Lots of improvements to existing API
10. Java EE 6 Web Profile
Web container JSP 2.2
extensions
JSF 2.0 JSTL 1.2
CDI
Bean Validation 1.0
extensions
Servlet 3.0 · EL 2.2
DI 1.0 · CDI 1.0 · Interceptors 1.1 · JSR-250 1.1
Managed Beans 1.0 EJB 3.1 Lite
JPA 2.0 · JTA 1.1
11. Web Tier Updates
• Annotations in Servlet 3.0
• Automatic discovery and registration of libraries
• web.xml is optional
• Package static files in resource jars
• Use EJBs directly inside web apps
12. Web Apps Simplified Packaging
Web Application
WEB-INF/classes
com/acme/MyServlet.class
com/acme/MyFilter.class
WEB-INF/lib
someframework.jar
WEB-INF/web.xml
index.html
main.css
jquery-1.4.2.js
ui/jquery.ui.core.js
ui/jquery.ui.widget.js
13. Web Apps Simplified Packaging
Web Application
WEB-INF/classes @WebServlet(urlPatterns=”/foo”)
com/acme/MyServlet.class public class MyServlet { … }
com/acme/MyFilter.class
WEB-INF/lib @WebFilter(urlPatterns=”/foo”)
someframework.jar public class MyFilter { … }
WEB-INF/web.xml
index.html
main.css
jquery-1.4.2.js
ui/jquery.ui.core.js
ui/jquery.ui.widget.js
14. Web Apps Simplified Packaging
Web Application
WEB-INF/classes
com/acme/MyServlet.class
com/acme/MyFilter.class Framework Jar
WEB-INF/lib META-INF/web-fragment.xml
someframework.jar com/fw/FwServlet.class
com/fw/FwFilter.class
index.html
main.css
jquery-1.4.2.js
ui/jquery.ui.core.js
ui/jquery.ui.widget.js
15. Web Apps Simplified Packaging
Web Application
WEB-INF/classes
com/acme/MyServlet.class
com/acme/MyFilter.class
WEB-INF/lib
someframework.jar
jQuery Resource Jar
jquery-ui-1.8.4.jar META-INF/resources/jquery-1.4.2.js
META-INF/resources/ui/jquery.ui.core.js
META-INF/resources/ui/jquery.ui.widget.js
index.html
main.css
17. Java EE 6 Programming Model
• Complementary declarative/programmatic layer
• Annotations are additive
• Code can evolve gradually
• Managed beans as a common foundation
18. EJB 3.1 Lite
• Session bean programming model
• Stateless, singleton programming model
• Annotation based declarative security and
transactions
• Deployment descriptors are optional
19. EJB 3.1 New First Class Construct
@Singleton @Startup
public class StartupBean {
@PostConstruct
public void doAtStartup() { … }
}
@Stateless public class BackupBean {
@Schedule(dayOfWeek=”Fri”, hour=”3”, minute=”15”)
public void performBackup() { … }
}
@Stateless public class BatchProcessor {
@Asynchronous public Future<Result> submit(Task t){ … }
}
20. Dependency Injection
• Powerful type-safe model
• Can be enabled per-module
• Integrated with JSF, JSP, EJB, web tier
• Friendly to pre-Java EE 6 resources and services
• Event model
• Highly extensible
21. Bean with Constructor Injection
@RequestScoped
public class CheckoutHandler {
@Inject
public CheckoutHandler(
@LoggedIn User user,
@Reliable @PayBy(CREDIT_CARD)
PaymentProcessor processor,
@Default ShoppingCart cart) {…}
22. Bean with Constructor Injection
@RequestScoped
public class CheckoutHandler {
@Inject
public CheckoutHandler(
@LoggedIn User user,
@Reliable @PayBy(CREDIT_CARD)
Types
PaymentProcessor processor,
@Default ShoppingCart cart) {…}
23. Bean with Constructor Injection
@RequestScoped
public class CheckoutHandler {
@Inject
public CheckoutHandler(
@LoggedIn User user,
@Reliable @PayBy(CREDIT_CARD)
Qualifiers
PaymentProcessor processor,
@Default ShoppingCart cart) {…}
24. Bean with Constructor Injection
Request scoped
@RequestScoped
public class CheckoutHandler {
@Inject
public CheckoutHandler(
@LoggedIn User user,
@Reliable @PayBy(CREDIT_CARD)
PaymentProcessor processor,
@Default ShoppingCart cart) {…}
25. Bean with Constructor Injection
@RequestScoped
public class CheckoutHandler {
@Inject
public CheckoutHandler(
@LoggedIn User user,
@Reliable @PayBy(CREDIT_CARD)
Session scoped PaymentProcessor processor,
@Default ShoppingCart cart) {…}
26. Bean with Constructor Injection
@RequestScoped
public class CheckoutHandler {
@Inject
public CheckoutHandler(
@LoggedIn User user,
@Reliable @PayBy(CREDIT_CARD)
PaymentProcessor processor,
@Default ShoppingCart cart) {…}
Application
scoped
27. Bean with Constructor Injection
@RequestScoped
public class CheckoutHandler {
@Inject
public CheckoutHandler(
@LoggedIn User user,
@Reliable @PayBy(CREDIT_CARD)
PaymentProcessor processor,
@Default ShoppingCart cart) {…}
Conversation scoped
29. Layers of Cloud
Software as a Service (SaaS)
Platform as a Service (PaaS)
Infrastructure as a Service (IaaS)
30. Java EE and the Cloud
• Containers are back in vogue!
• We have containers
• We have services... injectable services...
• We scale to large clusters...
• We have a security model...
31. JSR 342 – Java EE for the Cloud
• More easily operate on public/private cloud
– Multi tenancy, elasticiy
• Tighter requirements for resource and state
management
• Better isolation between applications
• Potential standard APIs for NRDBMS, caching, etc.
• Common management and monitoring interfaces
• Evolving the platform
32. Better Packaging for the Cloud
• Applications should be versioned
• Multiple versions should be able to coexists
• Dealing with data versioning, upgrades, etc.
• Need the ability to specify QoS properties
• Exposed and connected to services
33. Cloud Platform
Application
Java Persistence Queueing
Service Service Service
...
State Management
Virtualization Layer
34. Cloud Platform
Application
Code Code Code QoS
Module Module Module
Schema Migration Security
Information …
Java Persistence Queueing
Service Service Service
...
State Management
Virtualization Layer
35. Cloud Platform
Application Application Application Application Application
Java Persistence Queueing
Service Service Service
...
State Management
Virtualization Layer
36. Cloud Platform
Managed Environment
Application Application Application Application Application
Java Persistence Queueing
Service Service Service
...
State Management
Virtualization Layer
37. Modularity
• Build on JavaSE 8 modularity
• Applications are composed of modules
• Dependencies are explicit
• Versioning is built-in
• Additional metadata for JavaEE
48. Web Tier
• Web socket support in Servlet container
• Standard JSON API
• HTML5 support in JSF
• NIO2 based web container
• Updates to Web Profile
• JAX-RS 2.0 will be mandatory
49. New API
• Concurrency Utilities – JSR 236
– Eg. transaction-, security- naming- aware ExecutorService
• JCache – JSR 107
– Local cache API, key-value map
– Needs to be aligned with JPA cache API
• JMS 2.0
– Annotation based programming model to JMS
• JSON 1.0
• RESTful client API for JAX-RS 2.0
51. Java EE 7 Schedule
• First seven JSRs already filed
• Remaining ones to be filed soon...
– Stay tuned
• Final release late 2012
• Date driven release
– Anything not ready will be deferred to Java EE 8
