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Jakarta EE Cookbook
Jakarta EE Cookbook

Jakarta EE Cookbook: Practical recipes for enterprise Java developers to deliver large scale applications with Jakarta EE , Second Edition

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Jakarta EE Cookbook

Server-Side Development

Jakarta EE is typically used for server-side development. Most of its APIs are powerful and used for server-side processing and management.

This chapter will provide you with some common and useful scenarios that you may face as a Jakarta EE developer and will show you how to deal with them.

In this chapter, we will cover the following recipes:

  • Using Jakarta CDI to inject context and dependencies
  • Using Jakarta Bean Validation for data validation
  • Using Jakarta Servlet for request and response management
  • Using Server Push to make objects available beforehand
  • Using EJB and JTA for transaction management
  • Using EJB to deal with concurrency
  • Using JPA for smart data persistence
  • Using EJB and JPA for data caching
  • Using Jakarta Batch processing

Let's get started!

Using Jakarta CDI to inject context and dependencies

Jakarta Contexts and Dependency Injection (CDI) is one of the most important APIs under the Jakarta EE umbrella. Introduced in Java EE 6, it now has a big influence over many other APIs.

In the recipe, you will learn how to use Jakarta CDI in a couple of different ways and situations.

Getting ready

First, let's add the required dependency:

<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>8.0</version>
<scope>provided</scope>
</dependency>

How to do it...

...

Using Jakarta Bean Validation for data validation

You can use Bean Validation to constrain your data in many different ways. In this recipe, we are going to use it to validate a JSF form so that we can validate it as soon as the user tries to submit it and avoid any invalid data right away.

Getting ready

First, we need to add our dependencies:

<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>8.0</version>
<scope>provided</scope>
</dependency>

How to do it...

You need...

Using Jakarta Servlet for request and response management

Jakarta Servlet was created even before Jakarta EE existed actually, before J2EE existed! It became part of EE in J2EE 1.2 (Servlet 2.2) in 1999.

This is a powerful tool that's used to deal with request/response contexts. This recipe will show you an example of how to do this.

Getting ready

Let's add our dependencies:

<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>8.0</version>
<scope>provided</scope>
</dependency>

How to do it...

...

Using Server Push to make objects available beforehand

One of the most important new features of Jakarta Servlet 4 is its HTTP/2.0 support. It brings another cool and reliable feature Server Push.

This recipe will show you how to use Server Push in a filter and push the resources needed in every request that we want.

Getting ready

First, we need to add the required dependencies:

<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>8.0</version>
<scope>provided</scope>
</dependency>

How to do it...

...

Using EJB and JTA for transaction management

Jakarta Transaction (formerly JTA) is an API that enables distributed transactions over the Jakarta EE environment. It is most powerful when you delegate transaction management to the server.

This recipe will show you how to do this!

Getting ready

First, add the required dependencies:

        <dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>4.3.1.Final</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version...

Using EJB to deal with concurrency

Concurrency management is one of the biggest advantages supplied by a Jakarta EE server. You can rely on a ready environment to deal with this tricky topic.

This recipe will show you how to set up your own Jakarta Enterprise Beans (formerly EJBs) to use it!

Getting ready

To get ready, you simply need to add a Jakarta EE dependency to your project:

<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>8.0</version>
<scope>provided</scope>
</dependency>

How to do it...

...

Using JPA for smart data persistence

Jakarta Persistence (formerly JPA) is a specification that describes an interface for managing relational databases using Jakarta EE.

It eases data manipulation and reduces a lot of the code written for it, especially if you are used to the SQL American National Standards Institute (ANSI).

This recipe will show you how to use it to persist your data.

Getting ready

First, let's add the required dependencies:

        <dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>4.3.1.Final</version>
</dependency>
<dependency>
<groupId...

Using EJB and JPA for data caching

Knowing how to build a simple and local cache for your application is an important skill. It may have a big impact on some data access performance and is quite easy to do.

This recipe will show you how to do this.

Getting ready

Simply add a Jakarta EE dependency to your project:

<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>8.0</version>
<scope>provided</scope>
</dependency>

How to do it...

You need to perform the following steps...

Using Jakarta Batch processing

Running background tasks is a useful and important skill in an enterprise context.

You could use it to process data in bulk or just to separate it from the UI processes. This recipe will show you how to do this.

Getting ready

Let's add our dependencies:

<dependencies>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.2.10.Final</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>8.0</version>
...
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Key benefits

  • Explore Jakarta EE's latest features and API specifications and discover their benefits
  • Build and deploy microservices using Jakarta EE 8 and Eclipse MicroProfile
  • Build robust RESTful web services for various enterprise scenarios using the JAX-RS, JSON-P, and JSON-B APIs

Description

Jakarta EE is widely used around the world for developing enterprise applications for a variety of domains. With this book, Java professionals will be able to enhance their skills to deliver powerful enterprise solutions using practical recipes. This second edition of the Jakarta EE Cookbook takes you through the improvements introduced in its latest version and helps you get hands-on with its significant APIs and features used for server-side development. You'll use Jakarta EE for creating RESTful web services and web applications with the JAX-RS, JSON-P, and JSON-B APIs and learn how you can improve the security of your enterprise solutions. Not only will you learn how to use the most important servers on the market, but you'll also learn to make the best of what they have to offer for your project. From an architectural point of view, this Jakarta book covers microservices, cloud computing, and containers. It allows you to explore all the tools for building reactive applications using Jakarta EE and core Java features such as lambdas. Finally, you'll discover how professionals can improve their projects by engaging with and contributing to the community. By the end of this book, you'll have become proficient in developing and deploying enterprise applications using Jakarta EE.

Who is this book for?

This book is for Java EE developers who want to build enterprise applications or update their legacy apps with Jakarta EE's latest features and specifications. Some experience of working with Java EE and knowledge of web and cloud computing will assist with understanding the concepts covered in this book.

What you will learn

  • Work with Jakarta EE s most commonly used APIs and features for server-side development
  • Enable fast and secure communication in web applications with the help of HTTP2
  • Build enterprise applications with reusable components
  • Break down monoliths into microservices using Jakarta EE and Eclipse MicroProfile
  • Improve your enterprise applications with multithreading and concurrency
  • Run applications in the cloud with the help of containers
  • Get to grips with continuous delivery and deployment for shipping your applications effectively
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Publication date, Length, Edition, Language, ISBN-13
Publication date : May 29, 2020
Length: 380 pages
Edition : 2nd
Language : English
ISBN-13 : 9781838642884
Vendor :
Eclipse Foundation
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Product Details

Publication date : May 29, 2020
Length: 380 pages
Edition : 2nd
Language : English
ISBN-13 : 9781838642884
Vendor :
Eclipse Foundation
Category :
Languages :
Tools :

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Table of Contents

12 Chapters
New Features and Improvements Chevron down icon Chevron up icon
Server-Side Development Chevron down icon Chevron up icon
Building Powerful Services with JSON and RESTful Features Chevron down icon Chevron up icon
Web and Client-Server Communication Chevron down icon Chevron up icon
Security of the Enterprise Architecture Chevron down icon Chevron up icon
Reducing Coding Effort by Relying on Standards Chevron down icon Chevron up icon
Deploying and Managing Applications on Major Jakarta EE Servers Chevron down icon Chevron up icon
Building Lightweight Solutions Using Microservices Chevron down icon Chevron up icon
Using Multithreading on Enterprise Context Chevron down icon Chevron up icon
Using Event-Driven Programming to Build Reactive Applications Chevron down icon Chevron up icon
Rising to the Cloud - Jakarta EE, Containers, and Cloud Computing Chevron down icon Chevron up icon
Other Books You May Enjoy Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Full star icon Full star icon 5
(2 Ratings)
5 star 100%
4 star 0%
3 star 0%
2 star 0%
1 star 0%
Vinicius Isola Nov 15, 2020
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Frameworks are eating the Java world. This book has all the recipes for you to build Java applications without relying on any framework, just by relying on the Jakarta standards.It also include many recipes to build modern, cloud ready microservices.
Amazon Verified review Amazon
James Ma Aug 02, 2020
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I'm new to Jakarta EE, so this book speaks out to me in building backend systems with this new Java framework.I like that it covers a number of important points in enterprise app development including microservice architecture and reactive programming. Also, the code examples in the book are easy to follow.
Amazon Verified review Amazon
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