Java Resources

Zero-Cost AI with Java

Create a zero-cost AI application quickly using Ollama and Java with Spring AI — with no extra costs and full compatibility with other LLMs like OpenAI.

March 18, 2026

by Fernando Boaglio

· 5,281 Views · 5 Likes

Stranger Things in Java: Enum Types

Java enum types are more than named constants. This article explains how they work and why they matter in real Java applications.

March 16, 2026

by Claudio De Sio Cesari

· 4,767 Views · 1 Like

Extending Java Libraries with Service Loader

How to dynamically use Java’s Service Loader to discover and load SPI implementations at runtime for plugin-like extensions.

March 13, 2026

by Dominik Przybysz

· 4,025 Views · 3 Likes

What's New in Java 25: Key Changes From Java 21

In this article, we analyze the key Java 25 features and changes from Java 21, including Gatherers, JEPs, and simplified coding examples for faster adoption.

March 12, 2026

by Gunter Rotsaert

CORE

· 6,584 Views · 1 Like

Unblocking a Failed Solr 5 to Solr 8 Migration in a Large-Scale Ads Retrieval System

The Solr 5 to Solr 8 upgrade failed due to silent behavior changes, not bad configs. Fixing it meant restoring compatibility, not tuning knobs.

March 10, 2026

by Parveen Saini

· 2,559 Views · 1 Like

Square, SumUp, Shopify: Data Streaming for Real-Time Point-of-Sale (POS)

POS systems are transforming into real-time, AI-driven platforms, fueled by mobile payments, Kafka, and Flink to empower every retail merchant.

March 9, 2026

by Kai Wähner

CORE

· 3,551 Views

Building a Java 17-Compatible TLD Generator for Legacy JSP Tag Libraries

Solving broken TLD generation in Java upgrades: an annotation-based, build-time approach that keeps JSP tags working and compatible with Java 17.

March 4, 2026

by Sravan Reddy Kathi

· 2,475 Views · 1 Like

Comparing Top 3 Java Reporting Tools

Reporting and document generation are essential for applications in business. Here’s a compact, hands-on overview of three reputable tools for Java.

March 3, 2026

by Sergei Iudaev

· 3,806 Views · 5 Likes

Rethinking Java Web UIs With Jakarta Faces and Quarkus

Do enterprise-grade Java applications really need heavy JavaScript libraries? This is the question to which we'll be trying to answer here.

February 27, 2026

by Nicolas Duminil

CORE

· 3,330 Views · 10 Likes

A Practical Guide to Building Generative AI in Java

Genkit Java makes building generative AI features in Java finally simple. With typed inputs/outputs, structured LLM responses, built-in observability, a powerful DevUI.

February 26, 2026

by Xavier Portilla Edo

CORE

· 3,632 Views · 3 Likes

How to Configure JDK 25 for GitHub Copilot Coding Agent

Set JDK 25 for the GitHub Copilot coding agent so it can build and test Java 25 projects while working on your tasks.

February 25, 2026

by Bruno Borges

· 2,458 Views · 2 Likes

Data Driven API Testing in Java with Rest-Assured and TestNG: Part 1

Learn how to perform data-driven API automation testing with Rest-Assured using object arrays and TestNG's @DataProvider annotation.

February 23, 2026

by Faisal Khatri

CORE

· 2,491 Views · 2 Likes

Building a Sentiment Analysis Pipeline With Apache Camel and Deep Java Library (DJL)

This tutorial shows how to build a sentiment analysis pipeline entirely in Java using Apache Camel and Deep Java Library (DJL).

February 23, 2026

by Vignesh Durai

· 3,186 Views · 2 Likes

Testing Legacy JSP Code

In this article, learn how to test JSP with the least effort while getting the most out of the automated tests, and keep focus on what matters.

February 18, 2026

by Zoltán Csorba

· 2,091 Views

Why “At-Least-Once” Is a Lie: Lessons from Java Event Systems at Global Scale

At-least-once delivery keeps data flowing, but retries can duplicate effects, corrupting timelines. Reliability comes from replay-safe consumers and controlled effects.

February 18, 2026

by Krishna Kandi

· 3,480 Views · 2 Likes

Beyond Ingestion: Teaching Your NiFi Flows to Think

Stop just moving data with NiFi — make it smarter. Here's how to embed an AI model right into your flow using a Java Custom Processor.

February 17, 2026

by Madhusudhan Dasari

· 1,973 Views · 1 Like

Responding to HTTP Session Expiration on the Frontend via WebSockets

Presents a slightly different use of WebSockets — an action is taken at the front-end level when the HTTP session expires, and the back-end signals it.

February 17, 2026

by Horatiu Dan

CORE

· 2,012 Views · 4 Likes

My Learning About Password Hashing After Moving Beyond Bcrypt

I started with bcrypt because it was easy and widely recommended, but I moved to Argon2 once I understood how modern attacks work.

February 16, 2026

by Dhiraj Ray

· 2,402 Views

Java Developers: Build Something Awesome with Copilot CLI and Win Big Prizes!

Join the GitHub Copilot CLI Challenge and build something with Copilot right in your terminal for cash prizes and tickets to GitHub Universe.

February 12, 2026

by Bruno Borges

· 2,785 Views

Bootstrapping a Java File System

Apps self-managing files often implement custom APIs that bring different problems. Java's File System provides a way to self-manage files within standard Java APIs.

February 12, 2026

by Scott Sosna

CORE

· 2,769 Views · 1 Like

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