With a strong focus on annotations, minimalist configuration, simple deployment, intelligent defaults and Java centric type-safety, Java EE is one of the most productive full-stack development platforms around today. This very code centric workshop is a quick tour of the Java EE platform as it stands today. If you haven't seen Java EE for a while and want to catch up, this session is definitely for you. We will start with the basic principals of what Java EE is and what it is not, overview the platform at a high level and then dive into each key API like JSF, CDI, EJB 3, JPA, JAX-RS, WebSocket and JMS using examples and demos. This is your chance to look at Java EE 7 in the context of a realistic application named Cargo Tracker, available with an MIT license at http://cargotracker.java.net. We will also briefly take a look at the emerging horizons of Java EE 8.

1. Have You Seen Java EE
Lately?
Reza Rahman
Java EE/GlassFish Evangelist
reza.rahman@oracle.com
@reza_rahman

2. Copyright © 2012, Oracle and/or its affiliates. All rights reserved. Public2
Program Agenda
 Java EE Overview
 Cargo Tracker
 API Overview + Demo
 The Ecosystem
 Looking Ahead

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Java EE Past, Present, & Future
J2EE 1.3
CMP,
JCA
J2EE 1.4
Web
Services
,
Mgmt,
Deplymn
t
Java EE 5
Ease of
Use,
EJB 3,
JPA, JSF,
JAXB,
JAX-WS
Java EE 6
Pruning,
Ease of
Use,
JAX-RS,
CDI,
Bean-
Validation
Web
Profile
Servlet 3,
EJB 3.1
Lite
Java EE 7
JMS 2,
Batch, TX,
Concurr,
Web-
Sockets,
JSON
Web Profile
JAX-RS 2
J2EE 1.2
Servlet,
JSP, EJB,
JMS, RMI

4. Copyright © 2012, Oracle and/or its affiliates. All rights reserved. Public4
Java EE Past, Present, & Future
J2EE 1.3
CMP,
JCA
J2EE 1.4
Web
Services
,
Mgmt,
Deplymn
t
Java EE 5
Ease of
Use,
EJB 3,
JPA, JSF,
JAXB,
JAX-WS
Java EE 6
Pruning,
Ease of
Use,
JAX-RS,
CDI,
Bean-
Validation
Web
Profile
Servlet 3,
EJB 3.1
Lite
Java EE 7
JMS 2,
Batch, TX,
Concurr,
Web-
Sockets,
JSON
Web Profile
JAX-RS 2
J2EE 1.2
Servlet,
JSP, EJB,
JMS, RMI

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Java EE Past, Present, & Future
J2EE 1.3
CMP,
JCA
J2EE 1.4
Web
Services
,
Mgmt,
Deplymn
t
Java EE 5
Ease of
Use,
EJB 3,
JPA, JSF,
JAXB,
JAX-WS
Java EE 6
Pruning,
Ease of
Use,
JAX-RS,
CDI,
Bean-
Validation
Web
Profile
Servlet 3,
EJB 3.1
Lite
Java EE 7
JMS 2,
Batch, TX,
Concurr,
Web-
Sockets,
JSON
Web Profile
JAX-RS 2
J2EE 1.2
Servlet,
JSP, EJB,
JMS, RMI

6. Copyright © 2012, Oracle and/or its affiliates. All rights reserved. Public6
Java EE Past, Present, & Future
J2EE 1.3
CMP,
JCA
J2EE 1.4
Web
Services
,
Mgmt,
Deplymn
t
Java EE 5
Ease of
Use,
EJB 3,
JPA, JSF,
JAXB,
JAX-WS
Java EE 6
Pruning,
Ease of
Use,
JAX-RS,
CDI,
Bean-
Validation
Web
Profile
Servlet 3,
EJB 3.1
Lite
Java EE 7
JMS 2,
Batch, TX,
Concurr,
Web-
Sockets,
JSON
Web Profile
JAX-RS 2
J2EE 1.2
Servlet,
JSP, EJB,
JMS, RMI

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Java EE Today

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Java EE Today
Core Principles
 Open vendor neutral technical standard
 Stable core for a strong ecosystem
 Fully integrated runtime, intelligent defaults and convention-over-
configuration
 Non-redundant APIs with specialized roles
 Minimalism, simplicity and productivity
 Java centric – strong static typing, strongly Object Oriented,
focused on “blue collar” developers, strongly backwards
compatible

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Java EE Today
What it is Not
 No XML hell
 No configuration hell
 No jar/dependency hell
 No feature bloat
 No snake-oil/hypeware
 No bloated deployments
 No lock-in

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Java EE 7
EJB 3EJB 3
ServletServlet
JSFJSF JAX-RSJAX-RS
JMSJMS CDICDI
JPAJPA
UpdatedMajor
Release
New
Batch
Applications
Batch
Applications
JavaMailJavaMail
JAX-WSJAX-WS
BeanValidationBeanValidation
Java API for
JSON
Java API for
JSON
Java API for
WebSocket
Java API for
WebSocket
JTAJTAJCAJCAJACCJACC JASPICJASPIC
JAXBJAXB
Unchanged

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Java EE Demo Application
http://cargotracker.java.net

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JSF
 True MVC, component oriented, productive
 Facelets for view
– XHTML
– Templating
– Composite components
 Data, event binding to CDI via EL
 Validation, conversion, navigation, flow
 Supports AJAX, HTML 5
 Strong plug-in ecosystem
– PrimeFaces, RichFaces, ADF Faces, many others

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JSF API
 Facelets tags
– <ui:composition>, <ui:define>, <ui:insert>,
<ui:component>, <ui:repeat>
 HTML tags
– <h:form>, <h:inputText>, <h:selectOneMenu>,
<h:commandButton>, <h:commandLink>, <h:panelGrid>
 Core tags
– <f:convert...>, <f:validat...>, <f:ajax>
 Event/data binding to CDI via EL
– <h:inputText … value=“#{hello.name}” …>
 CDI Scopes
– @ViewScoped, @FlowScoped

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CDI
 Next generation type-safe dependency management
 Large number of component scopes
 Interceptors/decorators
 Type-safe events
 Portable extensions API to integrate third-party tools and
frameworks cleanly to Java EE
– DeltaSpike, Forge, Agorava, MyBatis-CDI, PicketLink, many more
 Improving testability
– Arquillian

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CDI API
 Basic dependency injection
– @Inject, @Qualifier, @Stereotype, @Alternative,
@Named, @Produces, @Disposes
 Context management
– @RequestScoped, @SessionScoped, @ConversationScoped,
@ApplicationScoped, @Scope (@FlowScoped, @ViewScoped,
@TransactionScoped)
 Lightweight events
– Event, @Observes
 Interceptors/decorators
– @Interceptor, @InterceptorBinding, @AroundInvoke,
@Decorator, @Delegate
 Portable extensions SPI

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EJB 3
 Enterprise service components
– Thread-safe, transactional, bandwidth-throttled, monitored
 Just POJOs + annotations
 Component types
– @Stateless, @Stateful, @Singleton, @MessageDriven
 Services
– @TransactionAttribute (JTA/CDI @Transactional),
@RolesAllowed, @RunAs, @Asynchronous, @Schedule,
@Lock, @Remote

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JPA
 ORM mapping/domain modeling
 CRUD EntityManager API
 Rich query capabilities
– JPQL
– Criteria Queries
– Native Queries
– Stored procedures
 Caching
 Small plug-in ecosystem
– QueryDSL, DeltaSpike Query Module, Spring Data/CDI

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JPA API
 Domain modeling
– @Entity, @Embeddable, @OneToOne, @OneToMany,
@ManyToOne, @ManyToMany, @ElementCollection, @Id
 Relational mapping
– @Table, @Column, @JoinColumn, @JoinTable, @Basic,
@Lob, @Temporal, @Enumerated, @Cacheable
 CRUD API
– EntityManager, Query, CriteriaQuery,
@PersistenceContext, @NamedQuery, @NamedNativeQuery,
@NamedStoredProcedureQuery

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Bean Validation
 Declarative constraint management across application layers
 Constraint
– Restriction on a bean, field, property, method parameter, return value
– Not null, between 10 and 45, valid email, etc
– @Max, @Min, @Size, @NotNull, @Pattern, @Future, @Past
– Custom constraints
– Evaluated automatically
 Integrated with JSF, JPA, CDI, JAX-RS

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JMS 2
 Reliable asynchronous messaging API for Java
 Point-to-point (queues), publish-subscribe (topic)
 Small, powerful API
– Message, Destination, Queue, Topic,
ConnectionFactory, Connection, Session,
MessageProducer, MessageConsumer, JMSContext,
JMSProducer, JMSConsumer, MessageListener,
@JMSConnectionFactory
 Message types
– TextMessage, ObjectMessage, BytesMessage,
MapMessage, StreamMessage

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JAX-RS 2
 REST development API for Java
 Server and client
 Annotation based
– @Path, @GET, @POST, @PUT, @DELETE, @PathParam,
@QueryParam, @Produces, @Consumes
 Pluggable and extensible
– Providers, filters, interceptors

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Java API for WebSocket
 High level declarative API for WebSocket
 Both client and server-side
 Small, powerful API
– @ServerEndpoint, @OnOpen, @OnClose, @OnMessage,
@OnError, Session, Remote
 Pluggable and extensible
– Encoders, decoders, sub-protocols

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Java EE Platforms
GlassFishJava EE 7
Java EE 6
TomEE

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Java EE Ecosystem

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Java EE 8 Community Survey
https://java.net/downloads/javaee-spec/JavaEE8_Community_Survey_Results.pdf
https://blogs.oracle.com/ldemichiel/entry/results_from_the_java_ee

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Java EE 8 Possibilities
 Web Standards/HTML5 Alignment
– HTTP2, SSE, JSON-B, JSON-P, action-oriented web framework,
hypermedia
 Cloud
– Simple security providers, REST management/monitoring
 CDI Alignment
– CDI 2, EJB services outside EJB, EJB pruning
 Enterprise
– JCache, Configuration, JMS
 Java SE 8 alignment

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Adopt-a-JSR for Java EE 8
 Grassroots participation to shape Java EE
 Launched in Java EE 7 time-frame, key community element for
Java EE 8
– 30 Java user groups participating!
http://glassfish.org/adoptajsr

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Resources
 Java EE Tutorials
– http://docs.oracle.com/javaee/7/tutorial/doc/home.htm
 Digging Deeper
– http://docs.oracle.com/javaee/7/firstcup/doc/home.htm
– https://glassfish.java.net/hol/
– https://java.net/projects/cargotracker/
 Java EE 7 Transparent Expert Groups
– http://javaee-spec.java.net
 Java EE 7 Reference Implementation
– http://glassfish.org
 The Aquarium
– http://blogs.oracle.com/theaquarium