Pagination records using JooqTemplate
Paginated queries with automatic total count calculation. Supports specifying result fields. public < E > LimitResult < List < E >, E &…
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Max Consecutive Ones
Problem Statement Given a binary array nums , return the maximum number of consecutive 1's present in the array. Example Input: nums = [1,1,0,1,1,1] O…
# Why Do We Use PasswordEncoder in Spring Security?
When I first started learning Spring Security, I had a simple question: "If Spring Security can authenticate users using usernames and passwords, why …
Building Resilient Multi-Agent Systems
Introduction AI agent systems are evolving rapidly. Today, we already see multi-agent architectures capable of solving complex problems by breaking th…
Securing Financial APIs in 2026: Implementing Global Request Interceptors and Automated Audit Trails in Spring Boot
With the recent surge in security vulnerabilities across the Spring ecosystem in the first half of 2026, relying on scattered security validation insi…
"Confluence Docs Lie. Tie Your Documentation to Code Instead."
Every team has that Confluence page. The one that was carefully written to explain what the service does, what the API looks like, what each DB column…
Java Solution - LeetCode Problem 1 Two Sum
Problem Description: Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to the target. You…
OAuth2 Login with JWT and Refresh Tokens in Spring Boot — The Setup You'll Rebuild Every Time
Most Spring Boot applications eventually need authentication. And many teams rebuild the same foundation every time. Add a login endpoint. Generate a …
Your Codename One App, Now A Native Mac App
Codename One has run on the desktop for a long time through the JavaSE target, which is the same engine that powers the simulator. What it did not hav…
System Prompt Leakage vs Prompt Injection in Spring Boot AI
System Prompt Leakage vs Prompt Injection Spring Boot AI You've wired up a Spring Boot service to an LLM, added a SystemMessage with confidential busi…
How I built a search engine
Hello all, I built a search engine from scratch in Java. In a previous course we were given it as a group project, but since I worked on just the docu…
Streaming 25 Million Excel Cells Through 7 MB of Memory
Streaming 25 Million Excel Cells Through 7 MB of Memory TL;DR: I built an export pipeline that streams 15M+ records as formatted Excel files inside ZI…
AI-агент для склада в Джеймикс. Часть 1
Это первая из двух статей про построение AI-агента внутри Джеймикс-приложения. Джеймикс (или Jmix , ex. CUBA ) - высокоуровневый фреймворк для разрабо…
Mastering Encapsulation in Java
Introduction Object-Oriented Programming (OOP) is built on four core principles: Encapsulation Inheritance Polymorphism Abstraction In this article, w…
MCP Java SDK – Build Model Context Protocol servers in Java
Hi HN, I built an open-source Java SDK for building Model Context Protocol servers: https://github.com/6000fish/mcp-java It is intended for Java devel…
How I Built a Prompt-to-Music AI Agent & Browser-Based Karaoke Separator with React & ONNX
Tags: react , webdev , onnx , audio Introduction Music generation, vocal separation, and intelligent arrangement have traditionally been server-side t…
Low-Level System Design (LLD) in Java: A Beginner's Guide
Introduction When preparing for software engineering interviews, many developers focus heavily on Data Structures and Algorithms. However, as you move…
Securing Your Spring Boot Architecture: A Pragmatic Approach with Clprolf
Introduction Spring Boot is an incredible framework. It gives developers immense freedom to build and scale applications quickly. However, in large te…
Stop Hiding SQL Behind Your ORM: jOOQ, JPA, and JDBC Under Production Load
Most persistence debates in Java are framed incorrectly. The question is not: Should we use JPA, jOOQ, or JDBC? The real question is: Is this part of …
Load a single record using JooqTemplate
1. load Load a single record matching the condition and map it to the specified entity class. Automatically appends LIMIT 1. public < E > E load…
Access Modifiers in Java Explained for Beginners
Introduction In Java, access modifiers are used to control how variables and methods can be accessed from different places. They are very important fo…
Veai 5.12: агент в любимой IDE, которому не нужно заранее объяснять формат задачи
Главная ценность релиза — разработчик начинает с рабочей задачи, а не с выбора режима. Каждый день есть задачи, которые хочется сделать быстро и …
Эволюция клиента для Ollama: от PostgreSQL к MongoDB
Привет. Меня зовут Николай Пискунов, я руководитель направления Big Data и эксперт курса Cloud DevSecOps по безопасной разработке от Академии вАЙТИ Be…
I built a tool that generates API docs from your source code - no annotations, no server running, no Swagger config
Before I get into it, yes, I know FastAPI gives you /docs out of the box. Yes, I know Spring Boot has SpringDoc. That is exactly why I want to explain…
Craig Walls’ Spring AI in Action is out: 5-book giveaway + Spring AI discussion
Spring AI is the Spring project's response to the gap in solutions for integrating enterprise Java with generative artificial intelligence models like…
I built a Spring Boot + Angular + JWT Full Stack Starter Kit — here's what I learned
Why I built this Every time I started a new Java full stack project I was spending 2-3 days just on setup — JWT configuration, Spring Security, CORS, …
Deploying Spring Boot to AWS EC2 with Docker and GitHub Actions — The Repeatable Way
Deploying a Spring Boot application to AWS EC2 is straightforward once you've done it. Getting there the first time — and repeating the setup on your …
Как я реализовал Connect RPC на Java с помощью AI-агентов
В статье я делюсь практиками работы с Claude Code и Codex, которые помогли мне реализовать сложную техническую задачу в условиях ограниченного времени…
Skill of the week: Spring Explore — первичный сбор контекста
Первичное наполнение контекста — крайне важная задача, результаты которой влияют на качество решения/сгенерированного кода, возможно, даже больше, чем…
What is the Purpose of the @Autowired Annotation in Spring Boot?
Learn what the @Autowired annotation in Spring Boot is, how dependency injection works, practical examples, best practices, and common mistakes to avo…