Java Resources

Learn how to use Testcontainers to create lightweight, throwaway instances of ScyllaDB for testing with hands-on example.

June 16, 2025

by Eduard Knezovic

· 1,795 Views · 1 Like

Code of Shadows: Master Shifu and Po Use Functional Java to Solve the Decorator Pattern Mystery

A humorous and educational comparison of the OOP and functional approaches to the Decorator pattern in Java, featuring Po and Master Shifu.

June 16, 2025

by Shaamik Mitraa

· 3,679 Views · 4 Likes

Memory Leak Due to Uncleared ThreadLocal Variables

ThreadLocal variables in Java, if not cleared, can accumulate in memory, causing an OutOfMemoryError. Learn how to clear them after use to avoid memory leaks.

June 13, 2025

by Ram Lakshmanan

CORE

· 4,726 Views · 2 Likes

Beyond Java Streams: Exploring Alternative Functional Programming Approaches in Java

Java Streams are great, but libraries like Vavr, Reactor, and RxJava unlock deeper functional power, async flow, pattern matching, trampolines, and cleaner composition.

June 12, 2025

by Rama Krishna Prasad Bodapati

· 5,060 Views · 5 Likes

Java Enterprise Matters: Why It All Comes Back to Jakarta EE

Jakarta EE powers enterprise Java—Spring, Quarkus, Helidon all rely on it. Learn why it's foundational, evolving fast, and why every Java developer should care.

June 11, 2025

by Otavio Santana

CORE

· 4,291 Views · 5 Likes

Kung Fu Code: Master Shifu Teaches Strategy Pattern to Po – The Functional Way

Master Shifu guides Po from bloated Java classes to cleaner functional code using the Strategy Pattern—showing that good code is about how you write it.

June 9, 2025

by Shaamik Mitraa

· 2,641 Views · 5 Likes

How to Create a Custom React Component in Vaadin Flow

Learn how to integrate custom React components (Plotly charts) into Vaadin Flow apps. Java backend sends data to a React frontend. React uses hooks to communicate.

June 6, 2025

by Mark Andreev

· 3,327 Views

How to Identify the Underlying Causes of Connection Timeout Errors for MongoDB With Java

Understand common causes of connection timeout error when using MongoDB with Java and learn how to tackle them by analyzing logs and tuning connection settings.

June 6, 2025

by Rajesh Nair

· 5,705 Views · 5 Likes

Supercharge Your Java Apps With AI: A Practical Tutorial

A practical, code-rich tutorial showing Java developers AI integration via TensorFlow and OpenAI with examples like NLP, chatbots, and image processing.

June 4, 2025

by Alok Tibrewala

· 4,305 Views · 4 Likes

Beyond Bytecode: Exploring the Relationship Between JVM, JIT, and Performance

JIT compilation boosts Java performance by converting bytecode to native code at runtime, optimizing execution while balancing startup speed.

June 3, 2025

by Ammar Husain

CORE

· 3,652 Views · 6 Likes

Monoliths, REST, and Spring Boot Sidecars: A Real Modernization Playbook

Modernization isn’t a rewrite, it’s a dance. Wrap REST around SOAP, sneak in AWS, and layer smartly. Change only what matters. Legacy can live modern.

May 29, 2025

by Chandra Sekhar Kondaveeti

· 6,287 Views · 2 Likes

Introducing Graph Concepts in Java With Eclipse JNoSQL, Part 3: Understanding Janus

Explore JanusGraph with Java using Eclipse JNoSQL 1.1.8. Model entities, traverse with Gremlin, and query with Jakarta Data — scalable graph power with clean Java APIs.

May 29, 2025

by Otavio Santana

CORE

· 4,470 Views · 2 Likes

Introducing Graph Concepts in Java With Eclipse JNoSQL, Part 2: Understanding Neo4j

Learn how to integrate Neo4j into Java apps using Eclipse JNoSQL 1.1.8 — model entities, define relationships, and query graphs with Cypher and Jakarta Data.

May 28, 2025

by Otavio Santana

CORE

· 5,084 Views · 1 Like

Simpler Data Transfer Objects With Java Records

See how applications could elegantly organize and implement DTOs using Java records, especially in case of read-only operations.

May 28, 2025

by Horatiu Dan

CORE

· 3,507 Views · 5 Likes

How to Introduce a New API Quickly Using Micronaut

Knowing when to pivot can be vital to staying ahead of the competition. See how Cursor AI and Heroku can be leveraged to transform an idea into a reality.

May 28, 2025

by John Vester

CORE

· 14,275 Views · 2 Likes

Introducing Graph Concepts in Java With Eclipse JNoSQL

Harness the power of graph databases in Java using Eclipse JNoSQL and Jakarta Data — model rich relationships with Neo4j or TinkerPop and write smarter, connected apps.

May 27, 2025

by Otavio Santana

CORE

· 4,780 Views · 1 Like

Using Java Stream Gatherers To Improve Stateful Operations

Explore how Java 24's Stream Gatherers improve stateful stream processing, using a real example: calculating percentage changes in stock quote data.

May 27, 2025

by Sven Loesekann

· 6,265 Views · 4 Likes

Chat With Your Knowledge Base: A Hands-On Java and LangChain4j Guide

In this hands-on guide, you will learn to build a Java RAG chat application with LangChain4j to query your custom knowledge base.

May 22, 2025

by A N M Bazlur Rahman

CORE

· 5,967 Views · 7 Likes

How to Merge HTML Documents in Java

Merging HTML content in Java is more challenging than it sounds. This article covers some major difficulties of merging HTML and suggests a few API solutions.

May 21, 2025

by Brian O'Neill

CORE

· 4,972 Views · 2 Likes

Enforcing Architecture With ArchUnit in Java

In this article, we will discuss implementing architectural rules in code using ArchUnit, emphasizing its effectiveness over traditional documentation.

May 21, 2025

by Gunter Rotsaert

CORE

· 7,552 Views · 8 Likes

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