Java Resources

Kung Fu Commands: Shifu Teaches Po the Command Pattern with Java Functional Interfaces

Po skips training (again) but learns the Command Pattern from Shifu instead. Part of our "Design Patterns with Kung Fu" series. No dumplings were harmed.

June 17, 2025

by Shaamik Mitraa

· 2,133 Views · 1 Like

Driving Streaming Intelligence On-Premises: Real-Time ML With Apache Kafka and Flink

This article explores how to design, build, and deploy a predictive ML model using Flink and Kafka in an on-premises environment to power real-time analytics.

June 17, 2025

by Gautam Goswami

CORE

· 1,876 Views · 6 Likes

How to Use Testcontainers With ScyllaDB

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

June 16, 2025

by Eduard Knezovic

· 1,662 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

· 3,441 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

· 4,362 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

· 4,653 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

· 3,918 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

· 2,528 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

· 3,130 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

· 5,106 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

· 4,045 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

· 3,482 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

· 6,023 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

· 4,262 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

· 4,861 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

· 3,373 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

· 14,055 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

· 4,494 Views · 1 Like