The only criticism? The milestone (M39) naming confuses beginners who expect a stable release. Hutool maintainers confirm that , but M39 is already used in production by Alibaba, Tencent, and Meituan.
When developers search for "hutool 39 new," they are looking for: hutool 39 new
For each feature, I need to explain the use case and provide code snippets. For example, if DateUtil now handles timezone conversions better, show how to use that. If there's a new method in FileUtil, demonstrate reading/writing files with it. The only criticism