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Java
IBM Developer

Java

Develop modern applications with the open Java ecosystem.

The Java programming language is a high-level, object-oriented language. It is rapidly evolving across several fronts to simplify and accelerate development of modern applications.

03 February 2026

Tutorial

Configuring Quarkus applications

Learn how to optimize your Quarkus applications with efficient configuration and profile management for better performance and scalability.

Configuring Quarkus applications

03 February 2026

Tutorial

Mastering data persistence with Quarkus

Streamline your relational data management with Quarkus, Panache, and PostgreSQL. Learn how to simplify database interactions and improve your development efficiency.

Mastering data persistence with Quarkus

03 February 2026

Tutorial

Getting started with the Quarkus CLI

Get started with Quarkus, a fast and lightweight Java framework, and learn how to build your first Quarkus app using the Quarkus CLI and its innovative features, such as live reload and continuous testing.

Getting started with the Quarkus CLI

03 February 2026

Tutorial

Testing Quarkus applications

Explore the different testing techniques and tools available for Quarkus, including continuous testing, mocking, and more. Learn how to ensure your applications are reliable and stable.

Testing Quarkus applications

03 February 2026

Tutorial

Containerizing Quarkus applications and deploying them with Kubernetes

Learn how to simplify your application development and deployment with Quarkus and Kubernetes, and take your cloud native journey to the next level.

Containerizing Quarkus applications and deploying them with Kubernetes

03 February 2026

Tutorial

Building REST APIs with Quarkus

Learn how to build custom REST APIs using Quarkus, a Java framework for cloud-native applications. Follow our step-by-step guide and start building scalable, secure, and efficient APIs.

Building REST APIs with Quarkus

02 February 2026

Article

Protecting AI embedding vectors by using approximate distance preserving encryption for RAG applications

Protect embedding vectors from reverse-engineering attacks using distance-comparison-preserving symmetric encryption (DCPE). Learn to implement DCPE in Java with IronCore Labs Alloy SDK for secure RAG applications.

Protecting AI embedding vectors by using approximate distance preserving encryption for RAG applications

29 January 2026

Learning Path

Quarkus basics

This learning path is designed for Java developers who are new to Quarkus and want to understand how to build modern applications from the ground up. You will learn to create a project, build REST APIs, persist data, configure environments, test your code, and finally containerize and deploy your application.

Quarkus basics

13 January 2026

Article

Beyond the 12 factors: 15-factor cloud-native Java applications

Investigate the revised 15-factor app methodology and examine why it suggests an additional three factors to build truly cloud-native applications.

Beyond the 12 factors: 15-factor cloud-native Java applications

13 January 2026

Tutorial

Develop an AI-powered regulatory compliance assistant with Quarkus, Docling, and LangChain4j

Create an AI‑driven regulatory compliance service and master end‑to‑end document ingestion, metadata enrichment, and vector‑search tuning to deliver precise regulatory insights with Quarkus, Docling, and LangChain4j.

Develop an AI-powered regulatory compliance assistant with Quarkus, Docling, and LangChain4j

13 January 2026

Article

Why cloud-native Java developers love Liberty

Explore the open source cloud-native runtime, Open Liberty, and the features and tools it offers that make cloud-native developers' lives easier - from getting started through to coding, testing, deployment and monitoring in production.

Why cloud-native Java developers love Liberty

13 January 2026

Article

Creating cloud-native applications: 12-factor applications

The 12-factor app methodology provides guidelines to help developers design and build cloud-native apps. Explore how to take advantage of each of these factors to create apps, using open source technologies, that thrive in the cloud.

Creating cloud-native applications: 12-factor applications
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Java