Hutool 39 New !full! -

| Your JDK | Recommendation | |----------|----------------| | JDK 8 | Hutool 5.8.39 (stable LTS) | | JDK 11 | Hutool 5.8.39 (or 6.x if willing to upgrade) | | JDK 17+ | (future-proof, more features) | | JDK 21+ | Hutool 6.x (virtual thread support) |

Hutool 3.9 represented a maturation point for the library, bringing new stability, performance, and usability to Java developers. While the library continues to evolve, the "new" features introduced in 3.9—such as improved date handling, stronger HTTP capabilities, and enhanced collection manipulation—remain highly relevant for stable, long-term Java projects.

Hutool 5.8.39 版本在 AI 能力、核心工具增强、性能优化和大量问题修复上均有所建树。作为 5.x 系列的第 39 个小版本，它延续了 Hutool 一贯的多模块覆盖、开箱即用的风格。尽管项目在收购后外部出现了一些讨论声音，但从本次发布的内容来看，其开发节奏并未明显放缓，技术更新仍在持续推进。对于日常 Java 开发而言，5.8.39 依然是一个值得关注和升级的实用版本。

// Hutool 0.39: CollUtil.forEachIf(list, s -> s.startsWith("H"), s -> doSomething(s)); hutool 39 new

And for the cron‑lovers among us: DateUtil.cronNext() predicts the next execution time directly.

Hutool 6.x is a major upgrade from 5.x, with , improved performance, and new modules. If you are still on JDK 8, stick with Hutool 5.8.x LTS.

: Database components ( Db ) now support global FetchSize adjustments, allowing data infrastructure engineers to configure unified database stream row-fetching limits to stop Out-Of-Memory (OOM) exceptions before they start. Hutool 6

Rather than dumping text, dates, and collections loosely into a generic core, utilities are tightly categorized: Moved to org.dromara.hutool.core.text .

Migration Guide (if applicable)

User user = new User(); BeanUtil.fillBean(map, user); // Nested properties support System.out.println(user.getName()); // Output: Alice Rather than dumping text, dates, and collections loosely

Hutool remains a preferred "util" package alternative because it:

The updates brought massive improvements to everyday utilities, focusing heavily on modern Java patterns and semantic readability. Fluent Dynamic Proxy ( ProxyUtil )

：将 UUID 工具类改为 final 类，修复了与某些框架 equals 方法不兼容的问题。

💡 If you are starting a new project, always aim for the latest stable 5.x release to ensure better performance and security. If you tell me more about your project, I can help with: Upgrading from 3.9 to 5.x Replacing specific boilerplate with Hutool utilities