Java Resources

Part 1: Building Governed MCP Tool Services With Quarkus LangChain4j and Goose

Build governed, cloud-native Java MCP tool services for Goose agents using Quarkus LangChain4j, Java 25, and Jakarta Bean Validation.

August 26, 2026

by Daniel Oh

CORE

· 3,786 Views · 4 Likes

Working With Spreadsheets in Java: A Practical Overview

Working with Excel in Java isn’t just about reading and writing cells. Here’s how to choose the right tool for your use case.

August 26, 2026

by Hawk Chen

CORE

· 3,474 Views · 3 Likes

A Practical Guide to Using Java Virtual Threads With JMS Listeners

Build scalable Spring JMS listeners with Java virtual threads, focusing on concurrency, transactions, idempotency, and safe blocking workloads.

August 21, 2026

by Krishna Kandi

· 2,448 Views · 4 Likes

Java Enterprise Is Already Ready for the AI Era

Java Enterprise is ready for AI today. Jakarta EE integrates with AI providers and frameworks, while Jakarta Agentic AI and Jakarta EE 12 strengthen it.

August 18, 2026

by Otavio Santana

CORE

· 3,323 Views · 6 Likes

How We Cut PyFlink Pipeline p99 Latency from 3-5 Seconds to ~500ms

We eliminated per-record Python-side Protobuf parsing and JVM-to-Python crossings by letting Flink's native Protobuf format decode records directly into typed columns.

August 7, 2026

by Arjun Shah

· 3,103 Views · 2 Likes

Orchestration Meets MCP: Building Governed Agentic Workflows With Quarkus Flow and AGENTS.md

By combining Quarkus Flow, LangChain4j, MCP tools, and AGENTS.md, developers can construct deterministic, tool-augmented, and enterprise-governed AI agent loops.

August 7, 2026

by Daniel Oh

CORE

· 2,894 Views · 1 Like

HTTP QUERY Method Explained: RFC 10008, Ecosystem Adoption, and a Quarkus Implementation

RFC 10008's new QUERY method is safe and cacheable like GET but carries content like POST. This article explains the spec and runs it on Quarkus today.

August 6, 2026

by Hüseyin Akdoğan

CORE

· 2,541 Views · 2 Likes

I Built a Java Version Manager by Fixing Other Tools' Open Bugs

There is no point in shipping another Java Version Manager unless it is best in class, so I mined the test suites and bug trackers of SDKMAN, jenv, mise, volta, and asdf.

August 4, 2026

by David Lerner

· 3,293 Views · 2 Likes

Rethinking Java Design Patterns: From OOP to FP

This article aims to adopt a more systematic and practical approach to combining Java object-oriented principles in a functional style.

August 4, 2026

by Nicolas Duminil

CORE

· 6,958 Views · 9 Likes

Arrays in Java

Arrays in Java are fundamental data structures used to store elements of the same type sequentially in memory. They provide a convenient way to manage collections of data where each element is accessed by its index.

July 31, 2026

by Vincenzo Marrazzo

· 2,282 Views · 2 Likes

Building a Config-Driven SOAP/REST Integration Layer: One Service, Many Protocols

Learn how to build protocol-agnostic middleware that supports SOAP and REST integrations with configurable authentication and customer-specific transformations.

July 30, 2026

by Balaji Venkatasubramaniyar

CORE

· 2,910 Views · 1 Like

This One Spring Data JPA Pattern Cleaned Up to 3 Years of Repository Debt

Stop adding repository methods every time a filter changes. JPA Specifications let you compose queries cleanly at runtime.

July 29, 2026

by Ramesh Bellamkonda

· 3,097 Views · 2 Likes

The Java Story: The Official Documentary Is Here

This traces Java’s evolution from Oak to a global software platform, revealing its impact on open source, standards, engineering, and the community behind it.

July 29, 2026

by Otavio Santana

CORE

· 3,216 Views · 2 Likes

How to Build Living AI Coding Assistants With Quarkus Agent MCP

Supercharge local development with the standalone Quarkus Agent MCP server, allowing AI assistants to run, monitor, and debug Java applications.

July 23, 2026

by Daniel Oh

CORE

· 4,732 Views · 3 Likes

Stop Writing If-Else Spaghetti: Architecting Cleaner Java with the Strategy Pattern

Stop writing messy nested conditionals. Learn how to combine Java Enums, Functional Interfaces, and Spring to build a scalable Strategy Pattern.

July 23, 2026

by Rahul Tewari

· 7,625 Views · 3 Likes

Hardening MCP Gateways: Mitigating July 28 Security Risks in Java Applications

The latest MCP updates introduce security risks like protocol confusion. Quarkus mitigates these vectors using strict request filtering and enterprise security layers.

July 21, 2026

by Daniel Oh

CORE

· 3,580 Views

Mitigating Cache Stampedes in Dynamic API Translation Using Java 21 Virtual Threads

Building a dynamic API translation proxy that leverages Java 21 Virtual Threads and Redisson distributed locking to safely execute AI-driven schema mapping.

July 17, 2026

by Aniruddha Chatterjee

· 4,016 Views · 3 Likes

AGENTS.md Makes Your Java Codebase AI-Agent Ready

A standardized instruction layer for enabling AI agents to accurately navigate, build, and test applications by enforcing clear architectural and operational constraints.

July 17, 2026

by Daniel Oh

CORE

· 4,845 Views · 3 Likes

Going Stateless: Scaling MCP Servers to Cloud-Native Java and HTTP

The Model Context Protocol has evolved to be entirely stateless over HTTP, removing complex session bottlenecks. Pairing this update with cloud-native Java, Quarkus!

July 16, 2026

by Daniel Oh

CORE

· 5,178 Views · 2 Likes

Compliance Reporting Without Losing the Spreadsheet or the Control

Keep the spreadsheet UI for domain experts, but move validation, execution, logging, and export into a governed Java application.

July 14, 2026

by Hawk Chen

CORE

· 3,974 Views · 2 Likes

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