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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

WebSockets

Traditionally, web applications have been developed using the request/response model followed by HTTP. In this traditional request/response model, the request is always initiated by the client, then the server sends a response back to the client.

There has never been any way for the server to send data to the client independently, that is, without having to wait for a request, until now. The WebSocket protocol allows full-duplex, two-way communication between the client (browser) and the server.

The Jakarta API for WebSocket allows us to develop WebSocket endpoints in Java.

In this chapter, we will cover the following topics:

  • Developing WebSocket server endpoints
  • Developing WebSocket clients in JavaScript
  • Developing WebSocket clients in Java

Note

The source code for this chapter can be found on GitHub at https://github.com/PacktPublishing/Jakarta-EE-Application-Development/tree/main/ch09_src.

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