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Jakarta EE Application Development

Jakarta EE Application Development

By : David R. Heffelfinger
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Jakarta EE Application Development

Jakarta EE Application Development

5 (2)
By: David R. Heffelfinger

Overview of this book

Jakarta EE stands as a robust standard with multiple implementations, presenting developers with a versatile toolkit for building enterprise applications. However, despite the advantages of enterprise application development, vendor lock-in remains a concern for many developers, limiting flexibility and interoperability across diverse environments. This Jakarta EE application development guide addresses the challenge of vendor lock-in by offering comprehensive coverage of the major Jakarta EE APIs and goes beyond the basics to help you develop applications deployable on any Jakarta EE compliant runtime. This book introduces you to JSON Processing and JSON Binding and shows you how the Model API and the Streaming API are used to process JSON data. You’ll then explore additional Jakarta EE APIs, such as WebSocket and Messaging, for loosely coupled, asynchronous communication and discover ways to secure applications with the Jakarta EE Security API. Finally, you'll learn about Jakarta RESTful web service development and techniques to develop cloud-ready microservices in Jakarta EE. By the end of this book, you'll have developed the skills to craft secure, scalable, and cloud-native microservices that solve modern enterprise challenges.
Table of Contents (18 chapters)
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15
Chapter 15: Putting it All Together

Persisting data with Jakarta Persistence

Jakarta Persistence is used to persist data to an RDBMS. Jakarta Persistence Entities are regular Java classes; the Jakarta EE runtime knows these classes are Entities because they are decorated with the @Entity annotation. Let’s look at a Jakarta Persistence Entity mapping to the CUSTOMER table in the CUSTOMERDB database:

package com.ensode.jakartaeebook.persistenceintro.entity
//imports omitted for brevity
@Entity
@Table(name = "CUSTOMERS")
public class Customer implements Serializable {
  @Id
  @Column(name = "CUSTOMER_ID")
  private Long customerId;
  @Column(name = "FIRST_NAME")
  private String firstName;
  @Column(name = "LAST_NAME")
  private String lastName;
  private String email;
  //getters and setters omitted for brevity
}

In our example code, the @Entity annotation lets any other Jakarta...

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