Hutool 3.9 ^hot^ May 2026

    Hutool 3.9: The Quiet Giant of Java Utility Libraries – What You Need to Know

    • generate a diff-based upgrade script (search-and-replace imports),
    • scan a sample pom.xml/build.gradle and give exact dependency lines,
    • or produce a focused migration guide for DateUtil or JSONUtil. Which would you prefer?

    The Hutool Paradigm: Simplifying Enterprise Java Development through the Utility Library Pattern

    Hutool 3.9 is organized into distinct modular packages, ensuring that the library remains lightweight. Unlike monolithic frameworks, Hutool requires no external configuration files and follows a "just-add-jar" philosophy.

    hutool-core

    : The essential module providing tools for Bean manipulation, Date and Time processing , and collection utilities. Hutool 3.9

    Hutool-db

    : A thin wrapper over JDBC that makes database operations feel more like using an ORM without the overhead. Notable Features of Version 3.9 1. Enhanced Date Handling ( DateUtil ) Hutool 3