This article explains Java’s reverse‑domain package naming convention, illustrates it with a Maven project structure, and outlines four key advantages—collision avoidance, global uniqueness, readability, and logical layering—while showing how the open‑source mall‑swarm micro‑service project applies these principles.
This tutorial explains how to use the Maven Versions plugin to automate dependency upgrades, integrate them into CI pipelines, handle snapshots, filter unwanted versions, and apply various update goals, providing a reliable and repeatable approach to keep Java projects up‑to‑date.
This guide explains Maven's dependency scopes—including compile, provided, runtime, test, system, and import—detailing their purposes, how they affect transitive dependencies, and offering practical examples and best‑practice recommendations to help Java developers manage builds efficiently and avoid conflicts.
This tutorial explains why a Maven local repository can become corrupted, demonstrates how to identify broken dependencies, and provides step‑by‑step commands—including -U, dependency:resolve, and purge‑local‑repository—to force Maven to refresh or clean the repository safely.
This guide explains Maven’s dependency mechanism, including transitive dependencies and mediation, demonstrates ordering problems with Apache POI and OpenCSV, shows how to detect version conflicts using Maven plugins, and provides practical tips to avoid compile‑time and runtime errors in Java projects.
This article explains how Maven dependency conflicts arise, demonstrates practical troubleshooting with mvn dependency:tree, and guides you through creating a reusable Spring Boot starter to enforce consistent configurations, dramatically reducing runtime errors and improving team efficiency.
This guide explains how to improve Spring Boot configuration management by mapping external properties to Java enums using @ConfigurationProperties, demonstrating a complete example with Maven dependencies, YAML settings, enum definitions, configuration classes, a controller, and a Thymeleaf view to achieve flexible and readable code.
This guide explains two straightforward steps to load external JAR files into the JVM and make Spring Boot scan them, covering three implementation options—extending the classpath, using Spring Boot’s loader.path parameter, and creating a custom classloader—along with configuration details, Maven settings, and runtime considerations.
This article shares real‑world stories and step‑by‑step techniques for diagnosing Maven dependency conflicts, enforcing version control, and building reusable Spring Boot starters to streamline configuration, improve team efficiency, and prevent costly runtime failures.
This guide walks you through initializing a Spring Boot project, handling IDE setup frustrations, managing Spring Cloud and Kafka version compatibility, leveraging Maven for dependencies, implementing global exception handling, logging, CORS, and Swagger configurations, and recommends essential tools for efficient backend development.
Maven‑mvnd, a Maven daemon that keeps a long‑running JVM alive, dramatically speeds up Java project builds by eliminating repeated JVM startup, reducing resource consumption, supporting parallel builds, and offering seamless migration from Maven, making it ideal for large multi‑module projects and CI/CD pipelines.
The article examines recurring Java backend problems such as duplicated configuration files, hard‑coded parameters, mixed logging practices, unchecked code releases, unsynchronized databases, and Maven dependency issues, then offers concrete solutions like externalized configuration, standardized logging, proper code review, and correct Maven pom settings.
Learn step‑by‑step how to create a Spring Boot multi‑module Maven project, from designing the parent and child module structure, configuring pom.xml files, writing simple application and controller code, to building and running the modules with Maven commands.
This article walks through the common frustrations of IDE and environment setup for Spring Boot projects, explains version compatibility between Spring Cloud, Spring Boot, and Kafka, demonstrates how Maven and auto‑configuration simplify dependencies, and provides ready‑to‑use code snippets and useful tooling recommendations for backend developers.
This article explains how to package a Spring Boot application using Maven profiles, generate a zip bundle with the assembly plugin, and deploy it on Linux with a reusable shell script that can start, stop, restart, or unzip the service, eliminating manual configuration for each environment.
This article walks through setting up a Java Spring Boot project, managing compatible Spring Cloud, Spring Boot and Kafka versions, handling common dependency pitfalls with Maven, and provides ready‑to‑use scaffolding code for exception handling, logging, CORS, Swagger, and response wrapping, plus a list of useful development tools.
This article outlines the motivations, challenges, and step‑by‑step solutions for migrating over 100 Java applications to JDK 21, covering dependency conflicts, module system adjustments, Maven plugin compatibility, garbage‑collector selection, and practical build and deployment practices to ensure a smooth upgrade.
This article outlines the motivations, progress, and common issues encountered when upgrading over 100 Java applications to JDK 21, including deprecated APIs, module system constraints, Maven plugin incompatibilities, and GC choices, and provides concrete migration steps, configuration templates, and best‑practice recommendations for a smooth transition.
This article explains how to activate Spring Boot DevTools for hot deployment, integrate Lombok to simplify Java beans, and add the Spring Configuration Processor for property metadata, providing step‑by‑step IDE settings, Maven dependencies, and configuration snippets for a smoother backend development experience.
This tutorial introduces Google AutoService, explains Java SPI concepts, shows Maven setup and @AutoService annotation examples, and demonstrates loading translation service providers with ServiceLoader, highlighting how the library automates SPI configuration and reduces errors.
This article explains how Maven‑mvnd accelerates Java project builds by using a long‑living daemon to avoid repeated JVM startups, reduces resource consumption, improves CI/CD feedback loops, and offers easy migration from standard Maven with no syntax changes.
This guide explains how to install jEnv, add and configure multiple JDK versions, set global and local JDKs per project, and integrate the tool with Maven and Gradle to ensure the correct Java version is used across diverse development environments.
Apache Commons Lang3 provides Pair and Triple classes that let Java developers return multiple related values without custom wrappers, offering immutable and mutable variants, easy Maven integration, and clear APIs for handling key‑value pairs and three‑element tuples, improving code readability and maintainability.
This article explains how Java developers can use ArchUnit to automatically import and analyze compiled classes, define custom architectural rules, enforce package naming conventions, prevent cyclic dependencies, and integrate the library with Maven or Gradle builds to maintain a clean, layered backend architecture.
This guide explains why and how to use Maven's dependency analysis tool to detect used undeclared and unused declared dependencies, demonstrates the required commands, interprets the warnings, and outlines best‑practice timing and risk considerations for Java backend projects.
Maven‑mvnd introduces a long‑running daemon, GraalVM native execution and seamless Maven compatibility to dramatically reduce build time, lower resource consumption, and improve feedback loops for large or multi‑module Java projects.
This guide walks you through Maven installation, local repository configuration, dependency coordinates, common Maven commands, profile usage, multi‑module project setup, the difference between dependencyManagement and dependencies, and practical Maven tricks such as installing local jars, removing version numbers from generated artifacts, and resolving dependency conflicts.
This guide explains how Maven repositories and mirrors work, the role of the mirrorOf attribute, how to set up central and third‑party repositories in pom.xml, configure mirrors in settings.xml with various matching rules, and properly configure private repository deployment with authentication and profile activation.
Learn a step‑by‑step method to integrate a third‑party SDK jar that isn’t in a Maven repository into your Java project by placing the jar in resources, adding a system‑scoped dependency, and configuring the build plugin to include it during packaging.
The article announces the Spring AI 1.0 release, provides the Maven BOM dependency, compares Spring AI with LangChain4j for Java AI development, and outlines upcoming integration, performance, and observability improvements for both frameworks amid rapid large‑model advancements.
This article explains why consistent Java code style matters, reviews major industry standards such as Google and Alibaba, guides the selection and customization of a style guide, and demonstrates how to configure IntelliJ IDEA, Checkstyle, and Maven to enforce the rules throughout development.
This article explains how Maven‑mvnd addresses slow build times, high resource consumption, frequent build latency, and multi‑project build inefficiencies by using a long‑running daemon, GraalVM native executables, and seamless Maven compatibility, providing step‑by‑step installation and usage guidance.
This tutorial demonstrates how to add Apache POI dependencies via Maven and use Java code to create an Excel workbook containing a multi‑series temperature line chart, including custom font sizes for titles and axes, and finally export the file to disk.
Maven‑mvnd introduces a long‑running daemon to eliminate JVM startup overhead, cut resource usage, accelerate frequent builds, and streamline multi‑module projects, while remaining compatible with existing Maven workflows and offering GraalVM‑based native execution for faster, lighter builds.
This guide explains how to create a fast, reliable CI/CD workflow by integrating Jenkins, Docker, Maven, and Alibaba Cloud, covering pipeline benefits, step‑by‑step configuration, Docker image building, registry push/pull, Jenkins container setup, GitLab webhook integration, and common pitfalls with suggested optimizations.
This guide explains how to configure a Maven pom.xml file, covering project coordinates, dependency scopes, dependencyManagement, exclusions, conflict resolution, lifecycle phases, goals, common plugins, profile activation, repository settings, distribution management, and modular project structure for reliable Java builds.
The article explains Maven‑mvnd, a daemon‑based Maven variant that eliminates JVM startup overhead, reduces resource consumption, and speeds up single‑ and multi‑module Java builds, while remaining compatible with existing Maven workflows and offering simple installation, configuration, and usage instructions.
This article explains how to run Maven's dependency:analyze command, interpret its warnings about used‑undeclared and unused‑declared libraries, and safely clean up Java project dependencies, while also offering quick IntelliJ IDEA shortcuts and noting related promotional offers.
This tutorial walks developers through setting up a low‑cost, containerized AI service on Windows by installing Docker, deploying Redis and Ollama containers, pulling the DeepSeek‑R1 model, and integrating everything with Spring AI to enable continuous conversation support.
This article introduces JLine 3, a Java library that adds GNU‑readline‑style features such as line editing, history, auto‑completion, and syntax highlighting to command‑line tools, and provides Maven setup, a complete code example, detailed explanation, and sample output for building robust interactive CLI applications.
This guide explains why managing Maven dependencies is essential, shows how to run mvn dependency:analyze in the terminal or IntelliJ IDEA, interprets the warnings for used undeclared and unused declared dependencies, and outlines best timing and precautions for safely cleaning up your project's pom.xml.
This tutorial demonstrates how to use Apache Tika in a Java project to parse PDF, Word, and text documents, extract specific fields such as name and ID number, and shows the required Maven dependencies and sample code for performing the extraction.
This guide walks through configuring Maven profiles to produce environment‑specific Spring Boot packages, using the maven‑assembly‑plugin to create a zip bundle, and operating a reusable shell script that can unzip, start, stop, and restart the jar on Linux.
This guide walks you through the complete Jenkins CI/CD workflow—from source‑code changes triggering automated builds, tests, and packaging to secure deployment—showing how to set up Jenkins, configure pipelines, install essential plugins, and manage global tools for reliable, hands‑free releases.
This article explains how a corrupted Maven .m2 cache can sabotage builds and CI pipelines, outlines ten destructive Maven options with code examples, and provides practical recovery steps to restore reliable, reproducible builds.
This guide walks through initializing a Spring Boot project, handling IDE setup challenges, managing version compatibility between Spring Cloud, Spring Boot, and Kafka, and provides practical code examples for global exception handling, logging, CORS configuration, Swagger integration, and useful development tools.
This article provides a detailed tutorial on Maven, covering basic configuration, repository setup, dependency management, module organization, plugin usage (including jar, assembly, shade), and build settings, with examples and code snippets to help Java developers efficiently manage projects.
This article introduces the lightweight Easy Rules Java rule engine, explains why traditional if‑else logic is problematic, demonstrates core concepts such as rule, condition, action, and facts, provides step‑by‑step code examples, showcases six practical use‑cases, and shows how to integrate it with Spring Boot and Maven.
This tutorial demonstrates how to replace the traditional jar‑upload workflow with an IDEA‑integrated Docker solution, covering environment setup, SSH configuration, Docker daemon connection, SpringBoot code, Dockerfile creation, remote deployment settings, firewall opening, and common troubleshooting steps.
This tutorial explains how to set up a complete CI/CD pipeline on CentOS 7 by installing Docker and Jenkins, configuring Maven, creating Jenkins jobs, building a Spring Boot application into a Docker image, and running the container, with detailed commands and screenshots for each step.
Explore the newly released Spring Boot 3 case collection and dive into a practical guide on implementing API version control in Spring 7.0.0‑M3, featuring step‑by‑step configuration, Maven setup, custom version resolver, and annotated controller examples, plus a promise of ongoing updates.
This guide walks through fixing Jenkins plugin update timeouts by switching to domestic mirrors, troubleshooting Maven pipeline failures caused by missing JVM libraries or disk space limits, clearing Git config lock files, and adjusting file‑descriptor limits and Docker ulimit settings to prevent out‑of‑resource errors.
This article explains how to configure Maven profiles for different environments, use the maven‑assembly‑plugin and maven‑jar‑plugin to create a zip deployment package for a Spring Boot application, and provides a reusable shell script (shenniu_publish.sh) for extracting, starting, stopping, and restarting the service on Linux.
This article provides a detailed tutorial on using Maven for Java projects, covering basic configuration, repository setup, dependency management, module organization, plugin usage such as jar, assembly, and shade, as well as build settings and code examples.
This article provides a comprehensive guide to IntelliJ IDEA, covering basic operations, advanced shortcuts, Maven integration, debugging, hot‑reload settings, and various UI customizations, offering developers practical tips and code snippets to boost Java development efficiency.
This article explains why the "class file has wrong version" error occurs when Java compilation and runtime versions differ, shows the mapping between Java releases and class file versions, demonstrates the error with sample code, and provides step‑by‑step solutions including version checks, Maven configuration, IDE settings, and best‑practice recommendations.
This article explains how to design a modular Spring Boot backend management system called XiaoLe, covering essential design principles such as single responsibility, high cohesion, low coupling, reusability, clear interfaces, layered architecture, and testability, and provides detailed Maven module structures and POM configurations for each component.
This guide walks you through downloading Byteman, setting up BYTEMAN_HOME, using Ant or Maven for integration, building from source, configuring the Java agent with detailed options, and leveraging tutorials for effective fault‑injection testing in Java applications.
This guide walks through the need for PDF generation in business scenarios, introduces the iText library (both iText5 and iText7), shows how to add Maven dependencies, provides a minimal “Hello World” PDF example, then details converting HTML (with CSS, images, and Freemarker variables) into PDF, and discusses when custom adaptation is required.
This article explains why and how to use Maven's dependency:analyze command in IntelliJ IDEA to identify used undeclared and unused declared dependencies, offering practical steps, risk considerations, and tips for maintaining clean Java backend projects.
The article shows how to replace hard‑coded strings in Spring Boot configuration files with type‑safe Java enums, using @ConfigurationProperties to bind YAML values to enum fields, thereby improving readability, maintainability, and eliminating magic numbers, illustrated through a user‑role example with controller and Thymeleaf view.
This article explains Apache Tika’s core features and architecture, outlines common use‑cases, and provides a step‑by‑step Spring Boot tutorial—including Maven/Gradle setup, a service that extracts text with Tika, regex‑based sensitive‑info detection, a REST controller, optional front‑end, testing instructions, expected output, and extension ideas.
The article explains how to manage Maven dependencies in Java projects by using the mvn dependency:analyze command in IntelliJ IDEA to detect unused or undeclared libraries, interpret the results, clean up the pom.xml, and follow best‑practice testing to ensure project stability.
This article introduces the Hutool Java utility library, showing how to install it via Maven and demonstrating 17 commonly used utility classes with code examples that simplify type conversion, date handling, JSON processing, string manipulation, reflection, encryption, validation, and more for backend developers.
This guide explains why Maven dependency analysis is essential, shows how to run mvn dependency:analyze, interprets warnings about used undeclared and unused declared dependencies, and offers practical tips for when and how to clean up your project's pom.xml safely.
This comprehensive tutorial walks you through Jenkins fundamentals, installation, JDK and Git integration, credential management, Maven setup, SSH password‑less login, and deployment scripts, providing all the commands and screenshots needed to automate Java project builds and releases.
This article explains how to use Spring Boot's @Import annotation to modularize applications, add scanning entry points, and dynamically register beans via ImportSelector and ImportBeanDefinitionRegistrar, including code examples and configuration tips for Maven multi‑module projects.
This article demonstrates how to integrate the open‑source Sensitive‑Word Java library via Maven, showcases core find/replace methods, explains advanced detection features such as email, URL, IP and numeric filtering, and provides a custom replacement strategy with complete code examples.
This guide announces the release of mica-mqtt 2.4.x, details the Maven groupId and package name changes, provides a full changelog, migration steps with code examples, and links to documentation and open‑source repositories, helping developers upgrade their MQTT solutions efficiently.
This article explains how to prepare the environment, configure GraalVM, use Maven plugins, and apply Spring Boot 3.0 AOT and RuntimeHints to compile a Spring Boot application into a fast‑starting native executable, including Docker packaging and underlying AOT principles.
This guide tackles the problem of oversized Spring Boot JARs by showing how to separate library JARs and configuration files from the main artifact, presenting three Maven‑based solutions—spring‑boot‑maven‑plugin, maven‑jar‑plugin, and maven‑assembly‑plugin—complete with configuration snippets, build commands, and deployment tips.
This article explains why Maven dependency analysis is essential for Java backend projects, demonstrates how to run the analysis with Maven and IntelliJ IDEA, interprets the warnings about used undeclared and unused declared dependencies, and provides best‑practice timing, risks, and shortcuts for maintaining clean dependency trees.
This article explains how to use Maven plugins to build a Spring Boot project into an executable JAR, separate its dependencies into a lib folder, and create a Docker image that copies those libraries, enabling clean deployment of Java backend services.
Spring Boot enables modular backend development by placing each feature in its own Maven module and using @Import (or custom annotations, ImportSelector, ImportBeanDefinitionRegistrar, and @ConditionalOnProperty) to load configuration classes, scan components, and conditionally register beans while keeping the application a single monolithic program.
This article introduces Apache Commons Lang 3, explains its key utilities, and demonstrates how to integrate the library with Maven and employ DiffBuilder and ReflectionDiffBuilder to compare Java objects, generate detailed difference reports, and simplify debugging and testing processes.
This article explains how to modularize a Spring Boot monolith by splitting it into Maven modules, leveraging @ComponentScan, @Import, custom annotations, ImportSelector, ImportBeanDefinitionRegistrar, and conditional loading to dynamically include or exclude functionality at runtime.
This article provides a step‑by‑step tutorial on using Maven for Java backend projects, covering repository configuration, basic POM structure, dependency declaration, scope handling, exclusion, variable properties, multi‑module management, dependencyManagement, and common build plugins such as jar, assembly, and shade.
This article explains how to streamline Spring Boot production releases by extracting libraries and configuration files from the main JAR, using various Maven plugins such as spring-boot-maven-plugin, maven-dependency-plugin, maven-assembly-plugin, and maven-jar-plugin to create lightweight, fast‑deployable packages.
This article explains the origins of big‑data technologies, details the architecture and read/write mechanisms of Hadoop's HDFS, describes the MapReduce programming model, and provides complete Java code examples for a simple distributed file‑processing job using Maven dependencies.
FastExcel, a Java‑based open‑source library announced after EasyExcel's discontinuation, offers fast, memory‑efficient Excel read/write, full compatibility with EasyExcel, simple APIs, MIT licensing for commercial use, easy Maven/Gradle integration, and clear code examples that have already attracted over 2,000 GitHub stars.
FastExcel, the newly renamed successor to EasyExcel, offers high‑performance Excel read/write, full compatibility, new features like row‑specific reading and PDF conversion, and provides detailed migration instructions with Maven/Gradle dependencies and code examples for Java developers.
The article announces the rebranding of EasyExcel‑Plus to FastExcel, outlines its high‑performance features, provides migration instructions and code samples for Maven and Gradle, and additionally promotes a ChatGPT community and related services.
The article announces EasyExcel's shift to maintenance mode, introduces its successor FastExcel with high‑performance features, and provides detailed migration steps, dependency configurations, and code examples for reading and writing Excel files in Java.
This article explains why consistent Java code style matters, reviews major industry style guides, shows how to choose and customize a style guide, and provides step‑by‑step instructions for configuring IntelliJ IDEA, Checkstyle, and Maven to enforce the standards in daily development.
This article details the design, architecture, and step‑by‑step implementation of a Spring Boot log auditing plugin built with AOP, Maven plugins, auto‑configuration, thread‑pool execution, and optional message‑queue streaming to improve operation logging and exception tracing in backend services.
This article reviews several methods for distributing Java Swing applications as standalone executables—including GraalVM native images, JLink, Exe4J, batch scripts, and plain JAR distribution—compares their advantages and drawbacks, and demonstrates a custom WinForm packaging tool with example Maven and source code.
This tutorial provides a step‑by‑step guide to set up a fully automated CI/CD pipeline on CentOS 7 that installs Docker, deploys Jenkins in a container, configures Maven and required plugins, creates a Jenkins job, builds a Spring Boot application with Dockerfile, and runs the resulting container, all with minimal pitfalls.
This article walks through initializing a Spring Boot project, handling version compatibility between Spring Cloud, Spring Boot, and Kafka, demonstrates common scaffolding code such as global exception handling, logging, CORS configuration, and recommends useful tools like Maven, embedded Redis, MyBatis‑Plus, and MapStruct for backend development.
This article explains why Java code style standards are essential for team collaboration, reviews major guidelines such as Google Java Style and Alibaba's p3c, and provides step‑by‑step instructions for configuring IntelliJ IDEA, Checkstyle, and Maven to enforce consistent, readable, and maintainable Java code.
This article provides a thorough step‑by‑step guide to using Maven for Java backend projects, covering repository configuration, basic POM structure, dependency inclusion and exclusion, module management, unified dependency handling, essential plugins such as jar, assembly and shade, and detailed build settings with code examples.
This article provides a detailed tutorial on Maven, covering its basic configuration, repository setup, dependency management (including scopes, exclusions, and version variables), multi‑module organization, unified dependency management, and common build plugins such as jar, assembly, and shade, with complete code examples and explanations.
This article explains Java's Service Provider Interface (SPI), compares it with traditional APIs, and provides a step‑by‑step guide with Maven project setup, code examples, custom class loader, and Spring Boot integration to build a modular plugin system.
The article shares a Java backend developer’s recent challenges—including duplicated configuration files, hard‑coded parameters, mixed logging practices, unchecked Maven dependencies, and production database inconsistencies—and offers practical solutions such as consolidating Spring configuration, standardizing logging, enforcing code reviews, and proper Maven pom handling.
This guide explains why IDEA's built‑in Maven builds are slow for large multi‑module projects and provides step‑by‑step instructions to enable multi‑threaded builds, delegate IDE builds to Maven, and add Maven cache extensions and configuration files to dramatically reduce build time.
This guide explains how to analyze the structure of a SpringBoot jar, separate your own classes from third‑party dependencies, reconfigure Maven packaging to produce a much smaller zip‑layout jar, and deploy it efficiently by uploading only the necessary libraries.
This article explores Java Swing packaging challenges, compares five distribution methods—including GraalVM, JLink, and Exe4J—highlights their pros and cons, and demonstrates a custom WinForm tool that bundles a Swing program with a minimal JRE into a double‑clickable executable.
This article explains how to package a Spring Boot application using Maven profiles and the assembly plugin, generate a zip deployment bundle, and deploy it on Linux with a custom shell script that supports start, stop, restart, and unzip operations.
This article presents a comprehensive guide to building a Spring Boot backend system by outlining essential design principles, detailing a multi‑module architecture with clear responsibilities, and providing complete Maven POM configurations for each module to enable scalable and maintainable development.
This article walks through setting up a Spring Boot project, explains version compatibility between Spring Cloud, Spring Boot, and Kafka, demonstrates common pitfalls, and provides essential scaffold code such as global exception handling, logging, CORS configuration, Swagger setup, and response wrappers.
This article explains how to secure Spring Boot deployment packages by using Maven plugins for code obfuscation and encryption, configuring classfinal‑maven‑plugin to encrypt class files, configuration files, and libraries, and demonstrates password‑less and password‑protected startup as well as machine‑bound execution to prevent reverse engineering.
