Enterprise Java

Skip the noise that can come with developing apps, and instead focus on building apps.

After giving a quick introduction to Kogito, Maciej Swiderski will explain how it can be used to build cloud-ready, event-driven business applications. This will be followed with a demonstration of how Quarkus (with its hot reload capabilities) can be used to create microservices implementing the business logic of a complex domain with rules and modeling its workflows through business processes integrated with Kafka to consume and produce business events.

What is enterprise Java programming?

Enterprise Java is the use of Java for application development in enterprise-scale software, and merges a collection of APIs and application servers that implement those APIs. Enterprise Java also includes related technologies, such as the Spring Framework.  

Enterprise Java Beans (EJB), Java Message Service (JMS), Java Persistence API (JPA), Java Transaction API (JTA), and Java Server Faces (JSF) make up the collection of modular tools that enable enterprise needs, such as distributed computing utilizing containers, web services, and high performance applications. 

Enterprises use Java today to build applications utilizing microservices rather than taking a monolithic approach. Enterprise Java is used across government, telecom, banking information systems, accounting, and e-commerce.

Get started with Quarkus

Course

Developing with Quarkus

5 lessons | 70 minutes

Learn Quarkus, a Kubernetes-native Java stack tailored for GraalVM & OpenJDK HotSpot. Stand up an application with a hello endpoint, then get familiar with Hibernate ORM via Panache, a Quarkus component.

Lesson

Getting started with Quarkus

10 minutes | Beginner

Learn Quarkus basics by standing up a straightforward application serving a hello endpoint.

Lesson

Effective data with Hibernate and Panache from Quarkus

15 minutes | Beginner

Learn about Quarkus and Hibernate ORM with Panache to create supersonic, subatomic Java applications with simplified Hibernate queries.

Lesson

Reactive streaming with Quarkus and Kafka

15 minutes | Beginner

Build a streaming application using MicroProfile reactive streams messaging and Apache Kafka, a distributed streaming platform.

Microservices for Java Developers book cover

Free book: Microservices for Java Developers

The microservice architectural approach lets you build complex systems to adapt to rapidly changing competitive markets. Now in its second edition, this step-by-step guide introduces concepts such as immutable delivery, and gets you started building distributed systems for managing microservices using Linux containers, Kubernetes, and three different Java frameworks: Spring BootDropwizard, and WildFly Swarm (WildFly Swarm was renamed Thorntail in 2018).

 

Learn how to:

  • Expose a service.
  • Configure at runtime.
  • Expose metrics and insight.
  • Call downstream services in a safe manner.

 

Download free book

Building Reactive Microservices in Java

Free book: Building Reactive Microservices in Java

Eclipse Vert.x is a toolkit that helps developers build reactive applications to run within the Java Virtual Machine. Whether you want to get rid of your monolithic enterprise applications, or avoid creating new ones, Eclipse Vert.x is worth investigating. Learn how to use reactive design to create distributed, reactive microservices within this framework. 

 

This book explains how to:

  • Explore the elements of reactive microservices and learn how Vert.x works.
  • Build and consume a single microservice to understand how messaging improves its reactiveness.
  • Create an entire microservices system, using stability and resilience patterns to manage failures.
  • Use the OpenShift container platform to deploy and manage microservices in a virtual or cloud environment.

 

Download free book

Edson Yanaga explains what’s new in the updated Effective Java and shares more tips not included in the book.

In this tutorial, Burr Sutter demonstrates how to optimize your enterprise Java apps, your APIs, your microservices, and your “serverless functions” for a Kubernetes/OpenShift environment—vastly smaller, vastly faster, and fundamentally more scalable.

Enterprise Java articles

Use mobile numbers for user authentication in Keycloak

Use mobile numbers for user authentication in Keycloak

October 23, 2020

I recently worked on a project that required using a mobile number for user authentication, instead of the traditional username and password. Almost everyone has a unique mobile number, so the requirement made sense. Our authentication tool is Keycloak, which does not ship with an option for mobile-based authentication. Instead, my team developed a custom […]

Seven perilous pitfalls to avoid with Java | DevNation Tech Talk

Seven perilous pitfalls to avoid with Java | DevNation Tech Talk

October 15, 2020

Developers and security: It’s a lot more than just turning on SSL. In this session we’re going to learn to think differently about designing and coding in Java so that the application is less open to being attacked and (bonus) is often of higher quality. This talk will cover seven types of development issues that can get your application into trouble. With code examples (of course), we’ll explore a series of common code pitfalls and explain how to design and code differently.

Securely connect Quarkus and Red Hat Data Grid on Red Hat OpenShift

Securely connect Quarkus and Red Hat Data Grid on Red Hat OpenShift

October 15, 2020

The release of Red Hat Data Grid 8.1 offers new features for securing applications deployed on Red Hat OpenShift. Naturally, I wanted to check them out for Quarkus. Using the Quarkus Data Grid extension made that easy to do. Data Grid is an in-memory, distributed, NoSQL datastore solution based on Infinispan. Since it manages your […]

Checkpointing Java from outside of Java

Checkpointing Java from outside of Java

October 15, 2020

When OpenJDK‘s Java virtual machine (JVM) runs a Java application, it loads a dozen or so classes before it starts the main class. It runs a method several hundred times before it invokes the optimizing compiler on that method. This preparation is a critical component of Java’s “write once, run anywhere” power, but it comes […]

Quarked testing: Writing tests for Quarkus

Quarked testing: Writing tests for Quarkus

October 12, 2020

DevNation Tech Talks are hosted by the Red Hat technologists who create our products. These sessions include real solutions plus code and sample projects to help you get started. In this talk, you’ll learn about testing Quarkus applications and services from Alex Soto Bueno and Burr Sutter. Testing allows you to deliver your application with […]

More Enterprise Java articles

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Quarkus

A cloud-native, container-first stack for creating Java applications tailored for GraalVM + HotSpot, crafted from Java libraries and standards.