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


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.


Getting started with Quarkus

10 minutes | Beginner

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


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.


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

Kogito 0.8.0 features online editors and cloud-native business automation

Kogito 0.8.0 features online editors and cloud-native business automation

March 20, 2020

Kogito is a cloud-native business automation solution that offers a powerful, developer-friendly experience. Based on production-tested open source projects Drools and jBPM, Kogito has business rules and processes down to a science. Kogito also aligns with popular lightweight runtimes such as Quarkus and Spring Boot to support developers building business-driven applications. This article is an […]

Shenandoah GC in JDK 14, Part 2: Concurrent roots and class unloading

Shenandoah GC in JDK 14, Part 2: Concurrent roots and class unloading

March 9, 2020

The first part of this miniseries about Shenandoah GC in JDK 14 covered self-fixing barriers. This article discusses concurrent roots processing and concurrent class unloading, both of which aim to reduce GC pause time by moving GC work from the pause to a concurrent phase. Concurrent roots processing Once concurrent marking is done, Shenandoah needs […]

Shenandoah GC in JDK 14, Part 1: Self-fixing barriers

Shenandoah GC in JDK 14, Part 1: Self-fixing barriers

March 4, 2020

The development of the Shenandoah Garbage Collector (GC) in the upcoming JDK 14 has seen significant improvements. The first one covered here (self-fixing barriers) aims to reduce local latencies that are spent in barrier mid- and slow paths. The second will cover concurrent root processing and concurrent class unloading. Self-fixing barriers The self-fixing barriers improvement […]

Debugging components in OpenShift using VS Code

Debugging components in OpenShift using VS Code

February 28, 2020

The latest release of OpenShift Connector enhances the developer experience on Red Hat OpenShift with support for local code debugging. This enhancement lets the user write and debug local code without leaving the editor. Based on developer community feedback related to OpenShift Connector for Visual Studio Code (VS Code), one of the main focuses was […]

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