Hutool 3.9 May 2026

: Simplifies complex encryption tasks like MD5 and SHA256 with one-line methods.

: A JDBC wrapper that uses ActiveRecord principles to reduce boilerplate code for database operations. Hutool 3.9

While newer versions like 5.x and 6.x are now available, the 3.9 era established the foundational modules that remain the bedrock of the library: : Simplifies complex encryption tasks like MD5 and

: It was a stable choice for projects still running on older Java environments before the library's full shift to Java 8 features in version 4.x . The name Hutool is derived from "Hu" (referencing

The name Hutool is derived from "Hu" (referencing the creator's former company) and "tool," which phonetically resembles the Chinese word for "muddle" (糊涂)—embracing a Zen-like philosophy of simplicity. Version 3.9 sits in the library's "Rapid Development Phase," where the project moved from a single massive JAR to a modular structure . Key Modules in Hutool 3.9