39 New - Hutool

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。

This article was last updated in May 2026. Hutool is an Apache 2.0-licensed project maintained by the Dromara community. hutool 39 new

// Old v5 approach import cn.hutool.core.util.StrUtil; import cn.hutool.core.collection.CollUtil; // New v6 architectural layout import org.dromara.hutool.core.text.StrUtil; import org.dromara.hutool.core.collection.CollUtil; Use code with caution. Hutool 5

Let me structure the guide accordingly, making sure each new feature is explained with context and examples. Also, highlight the benefits these features bring to developers. Let me structure the guide accordingly, making sure

Corrected date parsing logic for specific custom date formats. Impact: Ensures that string-to-date conversion remains consistent even with less common date format patterns.

Reconfigured internal routines within the XXXToMapCopier framework, resulting in noticeable performance gains during heavy entity reflections and nested dynamic properties lookup.