Jakarta EE 8: Overview of Features

COPYRIGHT (C) 2019, ECLIPSE FOUNDATION, INC. | MADE AVAILABLE UNDER THE ECLIPSE PUBLIC LICENSE 2.0 (EPL-2.0) 1
Jakarta EE 8 – An Overview of
Features
Josh Juneau
09/10/2019
Juneau001@gmail.com

COPYRIGHT (C) 2019, ECLIPSE FOUNDATION, INC. | MADE AVAILABLE UNDER THE ECLIPSE PUBLIC LICENSE 2.0 (EPL-2.0)
AGENDA
2
Brief History of Jakarta EE
Overview of Specifications
Coverage of Newest Features
Looking into the Near Future

Brief History of Jakarta EE

4COPYRIGHT (C) 2019, ECLIPSE FOUNDATION, INC. | MADE AVAILABLE UNDER THE ECLIPSE PUBLIC LICENSE 2.0 (EPL-2.0) 4
What Exactly is Jakarta EE?
Of course you already know successor to Java EE…but how has it evolved?
• J2EE 1.2 (1999)
• J2EE 1.3 (2001)
• J2EE 1.4 (2003)
• Java EE 5 (2006)
• Java EE 6 (2009)
• Java EE 7 (2013)
• Java EE 8 (2017)
<< Open Sourced to Eclipse Foundation >>
• Jakarta EE is goverened by the Jakarta EE Working Group
• Jakarta EE 8 == Java EE 8

What Exactly is Jakarta EE?
• Jakarta EE 8 != Java EE 8
• New Project Naming Convention
• Open Source TCK
• Eclipse GlassFish: Open Source Reference Implementation
• New Specification Process

What is EE4J
Top level project in the Eclipse Foundation for all of the projects creating standards to form
the base of Jakarta EE.
EE4J Project Management Committee (PMC) is responsible for maintaining the overall vision
for the top level project, and it will set standards and requirements for releases.
All of the individual projects of the Jakarta EE Platform are under the EE4J umbrella, and
together, they unify to form the Jakarta EE Platform.

How to Get Started Today
● Download Eclipse GlassFish 5.1 (Utilize Payara 5.x for JDK 11+ support)
○ https://projects.eclipse.org/projects/ee4j.glassfish
● Incorporate the specifications into your project
● Great examples:
○ https://github.com/juneau001/JakartaEE-Playground
○ https://projects.eclipse.org/projects/ee4j.jakartaee-platform/developer

Overview of Specifications

Jakarta EE 8 Projects
o Jakarta Annotations
o Jakarta Authentication
o Jakarta Authorization
o Jakarta Batch
o Jakarta Bean Validation
o Jakarta Concurrency
o Jakarta Connectors
o Jakarta Contexts and
Dependency Injection
o Jakarta EE Platform
o Jakarta Enterprise Beans
o Jakarta Expression Language
o Jakarta Interceptors
o Jakarta JSON Binding
o Jakarta JSON Processing
o Jakarta Mail
o Jakarta Messaging
o Jakarta Persistence
o Jakarta RESTful Web Services
o Jakarta Security
o Jakarta Server Faces
o Jakarta Server Pages
o Jakarta Servlet
o Jakarta Stable APIs
o Jakarta Standard Tag Library
o Jakarta Transactions
o Jakarta WebSocket
o Jakarta XML Web Services

Jakarta EE 8 Most Recently
Updated Projects
Maintenance Releases
o Jakarta Contexts and
Dependency Injection (2.0)
o Jakarta JSON Binding (1.0.2)
o Jakarta JSON Processing
(1.1.6)
o Jakarta Servlet (4.0.3)
o Jakarta Faces (JSF) (2.3)
o Jakarta RESTful Web Services
(2.1.6)
o Jakarta Bean Validation (2.0)
o Jakarta Security (1.0.2)
o Jakarta Mail
o Jakarta Persistence
o Jakarta Interceptors

Jakarta EE Project Portfolio

Jakarta Annotations Overview
Annotations for common semantic concepts in the J2SE and J2EE platforms that apply
across a variety of individual technologies.
Release 1.3.5

Jakarta Authentication Overview
The Java Authentication Service Provider Interface for Containers (JASPIC) defines a service
provider interface (SPI) by which authentication providers that implement message
authentication mechanisms may be integrated in client or server message processing
containers or runtimes.
Release 1.1.3

Jakarta Authorization Overview
The Java Authorization Contract for Containers (JACC) defines a contract between a Jakarta
EE application server and an authorization policy provider.
Release 1.6.2

Jakarta Batch Overview
The Jakarta Batch project describes the XML-based job specification language (JSL), Java
programming model, and runtime environment for batch applications for the Java platform.
Release 1.0

Jakarta Bean Validation Overview
The Jakarta Batch project describes the XML-based job specification language (JSL), Java
programming model, and runtime environment for batch applications for the Java platform.
Release 2.0

Jakarta Concurrency Overview
Jakarta Concurrency provides a specification document, API and TCK for using concurrency
from application components without compromising container integrity while still
preserving the Jakarta EE platform's fundamental benefits.
Release
1.1.2

Jakarta Connectors Overview
The Jakarta EE Connector Architecture defines a standard architecture for Jakarta EE
application components to connect to Enterprise Information Systems.
Release 1.7.3

Jakarta Contexts and Dependency Injection

Jakarta CDI Overview
o Key technology for Jakarta EE
o Uniform architecture for dependency injection and lifecycle management
o Leveraged by collaborative technologies
o Event Notification Model
o Web Conversation Context
o Powerful SPI for Portable Extensions
o 3 Parts:
o Core Specification
o Java SE Features
o Jakarta EE Features
Release 2.0

Jakarta CDI: Observers Ordering
o Allows one to specify a priority on observers
o Apply the @Priority annotation to observer methods, indicating a
javax.interceptor.Interceptor.Priority
public void onEvent(@Observes @Priority(1) MyEvent event){
// implementation
}
public void onAnotherEvent(@Observes @Priority(2) MyEvent event){
// implementation
}

Jakarta CDI: Async Events
o Provides ability for events to process in an asynchronous manner
o Annotate observer method parameter with @ObservesAsync
o Call upon fireAsync() to fire event
@Inject
BeanManager beanManager;
public void doSomething(){
beanManager.fireAsync(new PayLoad());
}
logEvent.fireAsync(new MessageLogger(“This is only a test.”));
public void listenToPayload(@ObservesAsync Payload event){…}

Jakarta CDI: Other Features
o Java SE Bootstrap

Jakarta Enterprise Beans Overview
o Jakarta Enterprise Beans is an architecture for the development and deployment of
component-based business applications.
Release 3.2.4

Jakarta Enterprise Beans Overview
No XML needed in most cases…easy to create Stateless and Stateful session beans with
annotations.

Jakarta Expression Language Overview
Expression Language (also referred to as the EL) provides an important mechanism for
enabling the presentation layer (web pages) to communicate with the application logic
(managed beans). -- Release 3.0.3

Jakarta Interceptors Overview
Interceptors are used to interpose on business method invocations and specific events such
as lifecycle events and timeout events that occur on instances of Jakarta EE components
and other managed classes.
Release 1.2.4

Jakarta JSON Binding

Jakarta JSON Binding Overview
JSON-B is a standard way to convert Java Objects to and from JSON objects. The project
defines a default mapping algorithm for converting Java POJOs to JSON. The developer may
also customize the mapping via the use of Java annotations.
Release 1.0.2

Jakarta JSON Binding - Mapping
Utilize default JSON binding mapping to quickly map a POJO.

Jakarta JSON Binding – Create JSON
Utilize the same Jsonb object to create JSON from an existing Java class.

Jakarta JSON Binding – Create JSON w/ Lists
Utilize the same Jsonb object to create JSON from an existing Java class.

Jakarta JSON Binding – More Details
● JSON-B API provides serialization and deserialization operations for manipulating JSON
documents to Java
● Default mapping, with custom annotation mapping available for compile-time
● JsonConfig class for runtime mapping customizations

Jakarta JSON Processing

Jakarta JSON Processing Overview
Eclipse Project for JSON-P is a Java API to process (e.g. parse, generate, transform and query)
JSON documents. It produces and consumes JSON in a streaming fashion (similar to StAX
API for XML) and allows to build a Java object model for JSON using API classes (similar to
DOM API for XML).
Release
1.1.6

Jakarta JSON Latest Features
● JSON Pointer and JSON Patch
● Editing/Transformation Operations Added to JSON Object Model
● Alignment with Java SE 8

Jakarta JSON - Pointers
● JSON Pointers can be utilized to find a specific value within a JSON document

Jakarta JSON – Changing Values
Utilize JSON Patch to replace a specified value within a JSON document with another value.

Jakarta JSON – Changing Values
● JSON Document or JsonPatchBuilder
● JSON Pointer is used to find the value or section that will be patched
● A series of operations can be applied
.

Jakarta Mail Overview
Jakarta Mail defines a platform-independent and protocol-independent framework to build
mail and messaging applications.
Release 1.6.4

Jakarta Messaging Overview
Jakarta Messaging is the Jakarta EE project that was formed from the Java Message Service
(JMS) API.
Java Message Oriented Middleware API for sending messages between two or more clients.
It is a programming model to handle the producer-consumer messaging problem.
Release
2.0.3

Jakarta Persistence

Jakarta Persistence Overview
The Java Persistence API is the Java API for the management of persistence and
object/relational mapping in Jakarta EE and Java SE environments.
Object-relational mapping is the process of mapping a Java object to a database table, such
that each column of the database table maps to a single field or property within the Java
object. Java objects that are used to map against database tables are referred to as entity
classes, and this chapter focuses on the creation and use of entity classes.
Release 2.2.3

Jakarta Persistence New Features
• Stream Query Results
• @Repeatable Annotations
• Support for the Date-Time API
• Support for CDI Injection within AttributeConverters

Jakarta RESTful Web Services

Jakarta RESTful Web Services Overview
Jakarta RESTful Web Services provides a specification document, TCK and foundational
API to develop web services following the Representational State Transfer (REST)
architectural pattern.
Release 2.1.6

Jakarta RESTful Web Services New Features
• Improved CDI Integration
• Reactive Client API
• Non-Blocking I/O

Jakarta RESTful Web Services SSE
Create an SSE Resource using JAX-RS, and broadcast server messages to connected clients
at will.

Jakarta Security

Jakarta Security Overview
The Java EE security provides a set of required security functionalities including
authentication, authorization, data integrity, and transport security.
● Standard Authentication (database, LDAP, in-memory, custom)
● Caller Principal Types
● Authentication Session
● Remember Caller (cookie, identity store)
● Group to Role Mapping
● Expression Language Support
● Identity Store
○ LDAP
○ Database
○ Embedded
● Authentication Mechanism
○ Simplified HttpAuthenticationMechanism interface
Release 1.0.2

Jakarta Security – Role Mapping

Jakarta Server Faces

Jakarta Server Faces Overview
Jakarta Server Faces defines an MVC framework for building user interfaces for web
applications, including UI components, state management, event handing, input validation,
page navigation, and support for internationalization and accessibility.
Release 2.3

Jakarta Server Faces New Features
• Enhanced CDI Alignment
• WebSocket Integration
• Ajax Method Invocation
• Class Level Validation
• Date-Time API Support
• Iterable/Map/Custom UIData Support
• Component search expressions
• Radio Button Component
• Styleclass Added to h:column
• Basic Support for Extensionless URLs

Jakarta Server Faces – Date/Time Support
Utilize Date-Time support via the f:convertDateTime converter.

Jakarta Server Faces – WebSocket Integration
Utilize the WebSocket tag to maintain an open socket for sending communication to clients.

Jakarta Server Pages Overview
JavaServer Pages (JSP) is a technology that helps software developers create dynamically
generated web pages based on HTML, XML, or other document types.
Release 2.3.5

Jakarta Servlet

Jakarta Servlet Overview
Jakarta Servlet is the foundation technology for interacting with the web on the Jakarta EE
Platform.
Release 4.0.3

Jakarta Servlet New Features
• Request/Response Multiplexing
• Stream Prioritization
• Server Push
• HTTP/2 Support

Jakarta Servlet – Push API
Utilization of the newer Push API allows one to push resources to a client before the page
is loaded. This allows all of the resources to be included in a single response, rather than
multiple.

Jakarta Stable APIs
This project contains stable (legacy) APIs, RIs and TCKs which won't be developed in future.
• Enterprise Deployment (1.7.1)
• JAXR-API (1.0.9)
• JAX-RPC-API (1.1.3)
• Management API (1.1.3)
Release 1.0.1

Jakarta Standard Tag Library
Jakarta Standard Tag Library (JSTL) encapsulates as simple tags the core functionality
common to many Web applications. JSTL has support for common, structural tasks such as
iteration and conditionals, tags for manipulating XML documents, internationalization tags,
and SQL tags. It also provides a framework for integrating existing custom tags with JSTL
tags.
Release 1.2.4

Jakarta Transactions
Jakarta Transactions API (JTA) specifies standard Java interfaces between a transaction
manager and the parties involved in a distributed transaction system: the resource
manager, the application server, and the transactional applications.
Release 1.3.3

Jakarta WebSocket
Jakarta WebSocket defines an API that can be utilized for integration with WebSockets, both
on the server side as well as the client side. The implementation is provided by the Eclipse
Tyrus project.
Release 1.1.2

Jakarta XML Web Services
The Jakarta XML Web Services is a Java programming language API for creating web services,
particularly SOAP services. Jakarta XML Web Services is one of the Java XML programming
APIs. It is part of the Jakarta EE platform.
Release 2.3.2

Looking into the Near Future

Jakarta Namespaces
• Convert from javax.* to jakarta.*
• Lots of discussion regarding this change...may be incremental or all at once

Jakarta Server Faces 3.0
• Removal of old cruft
• JSF’s own expression language
• Managed Beans
• Move more artifacts towards CDI
• Action Model (Not to compete with Krazo)
• Extensionless Mapping

Jakarta Security 1.1
● CDI-Compatible @RolesAllowed
● Custom authorization roles
● Possibility of Additional Authentication mechanisms (OAuth2 & Open ID Connect)

Jakarta Concurrency 1.1
● Move EJB Timer Service and @Asynchronous into Concurrency
● Make creation of concurrency services, such as managed executor service, more
portable

Jakarta Expression Language 3.1
● Map to Java SE Lambdas
● Ability to obtain more info from Method and Value expressions

We, the developers and community for
Jakarta EE, will make the future of this
platform. Contribute where you can,
develop and provide feedback.
Go Forth & Make It Happen!

Thank you!

Jakarta EE 8: Overview of Features

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