: Enabling hidden features like Apple CarPlay, Android Auto, or custom navigation maps.
Introduced HutoolAI platform, SSE streaming with callbacks, text-to-image/video support for Grok and Doubao. hutool 39 new
: Added model configuration for Doubao video generation. : Enabling hidden features like Apple CarPlay, Android
: Better management of persistent connections, reducing the overhead of establishing new connections for each request. Part 3: Why Choose Hutool 3.9 in 2026? : Better management of persistent connections, reducing the
In this article, we will dissect every major component of the Hutool 39 new release, provide migration tips, and show you how to cut your lines of code by 60% using these updates.
The 3.9 series is thoroughly documented, making it easy for developers to integrate quickly. Conclusion
Before diving into the code, it is worth clarifying the keyword. refers to the release series from late 2019 through early 2020 (specifically 3.9.0 to 3.9.3 ). While later versions (5.x and 6.x) exist today, version 3.9 remains a gold standard for teams stuck on JDK 8 or those who value stability over cutting-edge JDK 17+ features.