Hutool 3.9 [hot] 📌 🔥

For microservice developers stuck on Spring Cloud Netflix OSS, Hutool 3.9’s Snowflake implementation became the standard for database primary keys.

// List files with extension filter List<File> files = FileUtil.loopFiles(path, 2, file -> file.getName().endsWith(".xml")); Hutool 3.9

// Read file to string (handling encoding automatically) String content = FileUtil.readUtf8String(file); For microservice developers stuck on Spring Cloud Netflix

: Version 3.9 expanded cryptographic capabilities. It provides easy-to-use wrappers for AES, DES, RSA, and various hashing algorithms like MD5 and SHA-256, removing the complexity of the standard JCE. For greenfield projects, start with Hutool 6

For greenfield projects, start with Hutool 6.x (the latest). For production systems that just work and cannot be touched, is your silent guardian. It doesn't ask for updates. It doesn't break your builds. It just formats dates, generates IDs, and validates data—quietly, efficiently, forever.

in version 3.9 provided a Unix-like command structure for file manipulation: