Hutool 3.9

Upgrading is painless. If you are using Maven or Gradle:

While version 3.9 has since been succeeded by major versions like Hutool 5.x , the library's foundational tools established during the 3.x era remain central to its identity: Hutool 3.9

<dependency> <groupId>cn.hutool</groupId> <artifactId>hutool-all</artifactId> <version>3.9.0</version> </dependency> Upgrading is painless

The v3.9 release focused on stabilizing the core feature set. Key components analyzed include: | | Performance | JSON parser slower than Jackson

| Area | Limitation | |------|-------------| | | JDK 11+ works but not optimized for modules. | | Performance | JSON parser slower than Jackson. | | Async HTTP | No built-in async client (added in 5.x). | | Tree structure | TreeUtil exists but less powerful than 5.x. |

Hutool 3.9 stands as a testament to the "Toolbox" philosophy. It transformed Java from a verbose, boilerplate-heavy language into something that felt modern and rapid. Whether you're maintaining a legacy app or studying the evolution of Java utility libraries, version 3.9 is a classic example of developer-centric design.

String[] splitText = StrUtil.split(text, ","); System.out.println("Split text: " + splitText);