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Java EE 8 Application Development

Java EE 8 Application Development

By : David R. Heffelfinger
4.1 (9)
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Java EE 8 Application Development

Java EE 8 Application Development

4.1 (9)
By: David R. Heffelfinger

Overview of this book

Java EE is an Enterprise Java standard. Applications written to comply with the Java EE specification do not tie developers to a specific vendor; instead they can be deployed to any Java EE compliant application server. With this book, you’ll get all the tools and techniques you need to build robust and scalable applications in Java EE 8. This book covers all the major Java EE 8 APIs including JSF 2.3, Enterprise JavaBeans (EJB) 3.2, Contexts and Dependency Injection (CDI) 2.0, the Java API for WebSockets, JAX-RS 2.1, Servlet 4.0, and more. The book begins by introducing you to Java EE 8 application development and goes on to cover all the major Java EE 8 APIs. It goes beyond the basics to develop Java EE applications that can be deployed to any Java EE 8 compliant application server. It also introduces advanced topics such as JSON-P and JSON-B, the Java APIs for JSON processing, and the Java API for JSON binding. These topics dive deep, explaining how the two APIs (the Model API and the Streaming API) are used to process JSON data. Moving on, we cover additional Java EE APIs, such as the Java API for Websocket and the Java Message Service (JMS), which allows loosely coupled, asynchronous communication. Further on, you’ll discover ways to secure Java EE applications by taking advantage of the new Java EE Security API. Finally, you’ll learn more about the RESTful web service development using the latest JAX-RS 2.1 specification. You’ll also get to know techniques to develop cloud-ready microservices in Java EE.
Table of Contents (15 chapters)
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Summary


This chapter covered how to access data in a database via the Java Persistence API (JPA).

We covered how to mark a Java class as a JPA entity by decorating it with the @Entity annotation. Additionally, we covered how to map an entity to a database table via the @Table annotation. We also covered how to map entity fields to database columns via the @Column annotation, as well as declaring an entity's primary key via the @Id annotation.

Using the javax.persistence.EntityManager interface to find, persist, and update JPA entities was also covered.

Defining both unidirectional and bidirectional one-to-one, one-to-many, and many-to-many relationships between JPA entities was covered as well.

Additionally, we explored how to use JPA composite primary keys by developing custom primary key classes.

Also, we covered how to retrieve entities from a database by using the Java Persistence Query Language (JPQL).

We discussed additional JPA features such as the Criteria API, which allows us to build...

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Java EE 8 Application Development
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