Java Resources

Dead Letter Queue Patterns in Apache Flink: Handling Poison Messages Without Stopping Your Stream

A poison message can trap a Flink job in a restart loop. Use side outputs, retries, tiered DLQs, durable sinks, and replay jobs to keep the stream running.

July 2, 2026

by Rohit Muthyala

· 2,544 Views

Jakarta NoSQL: Why JPA Is Not Enough for the AI Era

Jakarta NoSQL provides a familiar Java programming model while preserving the strengths of document, graph, key-value, and AI-driven vector databases.

June 19, 2026

by Otavio Santana

CORE

· 2,209 Views · 1 Like

From printTriangularNumber to Duff’s Device: Mastering Java Switch Statements Old and New

This post traces that journey using triangular number computation as a practical example of intentional fall-through and connects the technique to Duff's Device.

June 19, 2026

by NaveenKumar Namachivayam

CORE

· 1,737 Views · 2 Likes

Top Java Security Vulnerabilities and How to Prevent Them in Modern Java

Most Java security breaches stem from preventable coding mistakes. Follow secure coding practices, validate inputs, and keep dependencies updated to reduce risk.

June 18, 2026

by Muhammed Harris Kodavath

· 2,817 Views · 1 Like

OpenAPI, ORM, SVG, and Lottie

Learn about Codename One's latest release with OpenAPI code generation, SQLite ORM, SVG and Lottie support, deep links, and routing.

June 17, 2026

by Shai Almog

CORE

· 4,247 Views · 1 Like

On-Device Debugging and JUnit 5

A walk-through of the new JDWP-based on-device debugging pipeline for ParparVM iOS apps and Android apps, with a step-by-step IntelliJ tutorial for each.

June 17, 2026

by Shai Almog

CORE

· 2,748 Views · 1 Like

A Spring Boot App With Half the Startup Time

Learn how Project Leyden and AOT caching can cut Spring Boot startup time in half, improving Kubernetes scaling and application responsiveness.

June 12, 2026

by Sven Loesekann

· 3,638 Views · 3 Likes

Implementing the Planning Pattern With Java Enterprise and LangChain4j

Learn how to implement the Planning Pattern with Enterprise Java, Jakarta EE, CDI, and LangChain4j, enabling AI to transform business goals into executable workflows.

June 12, 2026

by Otavio Santana

CORE

· 2,445 Views · 1 Like

Native SQL in Java Without JDBC Boilerplate — Meet Ujorm3

Ujorm3 eliminates JDBC boilerplate without a full ORM. Write native SQL with named parameters, get objects back — including nested relations.

June 11, 2026

by Pavel Ponec

· 2,713 Views · 5 Likes

Rust-Native Alternatives to Spark SQL and DataFrame Workloads

Sail is an open-source computation framework that serves as a drop-in replacement for Apache Spark (SQL and DataFrame API) in both single-host and distributed settings.

June 11, 2026

by Srinivasarao Rayankula

· 2,917 Views · 3 Likes

Skills, Java 17, and Theme Accents

Java 17 is the new Initializr default; generated projects ship an AGENTS.md authoring skill that any AI agent can pick up.

June 5, 2026

by Shai Almog

CORE

· 2,410 Views · 1 Like

Liquid Glass, Material 3, and a Lot of Plumbing

New iOS Modern (liquid glass) and Android Material 3 native themes, how they work in the Playground, in the simulator, and on devices, plus a week of performance and look

June 4, 2026

by Shai Almog

CORE

· 2,381 Views · 3 Likes

Getting Started With Agentic Workflows in Java and Quarkus

A step-by-step tutorial on how to add agentic workflows to Quarkus applications with the Agentican framework via YAML and annotations.

June 3, 2026

by Shane Johnson

· 3,116 Views · 5 Likes

Building AI-Powered Java Applications With Jakarta EE and LangChain4j

Integrate AI into Java apps with Jakarta EE, CDI, MicroProfile Config, and LangChain4j. Build AI services from simple prompts to type-safe domain-driven interactions.

June 3, 2026

by Otavio Santana

CORE

· 4,500 Views · 2 Likes

Alternative Structured Concurrency

My goal here is to experiment with an alternative approach leveraging Java's tried-and-tested, robust functionalities that have been available since JDK 1.5.

June 2, 2026

by Valery Silaev

· 2,220 Views

Jakarta EE 12: Entering the Data Age of Enterprise Java

Jakarta EE 12 introduces the Data Age of Enterprise Java with Jakarta Query, improved data access, and a unified model for cloud-native and polyglot systems.

June 1, 2026

by Otavio Santana

CORE

· 9,624 Views

Zero-Downtime Deployments for Java Apps on Kubernetes

Achieve zero-downtime deployments for Java applications on Kubernetes using rolling updates, readiness/liveness probes, and graceful shutdown strategies.

May 29, 2026

by Ramya vani Rayala

· 4,410 Views

Pragmatica Aether: Let Java Be Java

A modern, distributed, fault-tolerant runtime environment for the language that was intentionally designed for managed environments.

May 29, 2026

by Sergiy Yevtushenko

· 4,502 Views · 1 Like

Stateless JWT Auth Microservice Architecture With Spring Boot 3 and Redis Sentinel

Design a stateless JWT auth service with Spring Boot 3, Redis caching, and Sentinel for high availability, faster token validation, and reduced DB load.

May 27, 2026

by Erkin Karanlık

· 4,107 Views · 1 Like

Rethinking Java CRUDs With Event Sourcing and CQRS Patterns

A short overview of the Event Sourcing and CQRS patterns, applied to Java CRUD applications, illustrated by a simple order management system.

May 26, 2026

by Nicolas Duminil

CORE

· 3,609 Views

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