Java Enterprise Edition
Introduction à java EE

Session Objectives
 Name is Java Enterprise Edition, or Java
EE (previously J2EE)
 Understanding the value proposition of JEE
 Getting the big picture of JEE architecture and platform
 Getting high-level understanding of
Technologies that constitute JEE
 Have a basic know-how on JEE as a platform and for development

Keywords
JCP

@Stateless

JSR

@EJB

container
@SessionScope

@MessageDrivenBean

@Converter

JMS

@Resource
@TransactionAttribute

component

JSF

Renderer

JEE

Transaction

@ManagedBean
@Validator

EntityManager

Validation

@Inject
JPQL

@NotNull

JPA

CriteriaBuilder

NativeQuery

@PersistenceContext

What is Java?
An object-oriented programming language
A Virtual Machine architecture

A rich set of libraries
A set of tools
 Particularly those in the Software Development Kit (JDK)

Note: API (= library functions) are equivalent to C/C++ standard libraries, but far richer: library for graphical interfaces, sound, multithreading, network programming, ...

4

Java : Le JDK
 JDK = Java Development Kit


On dit aussi Java SDK (Software Dev. Kit)

 JDK = L'environnement minimal pour écrire des programmes Java
 le JDK est gratuit et disponible en ligne sur le site de
SUN ( http://java.sun.com ou sur le site Oracle)
 Il existe une version du JDK pour chaque plateforme :
Solaris, Windows, Linux, Mac OS,IBM AIX, HP-UX...)
 donc télécharger la bonne version sur le site de SUN

 Le JDK contient principalement:
 un compilateur de sources java : javac
 un interpréteur de byte code : java (la JVM)
 des API pour gérer le son, interfaces graphiques, le multithreading, le réseau, … : Les API Java core
5

Java: the different flavours


JDK or JRE?





JDK = Java Development Kit
J2EE
J2SE
JRE = Java Runtime Environment
JDK = JRE + compilateur
JRE = JVM + API Java Core


