Hutool 3.9 -

Hutool 3.9 - Helpful Feature Generation

Based on Hutool 3.9's capabilities, here's a helpful feature I'd generate for Chinese developers working with file operations:

// Check port availability boolean isOpen = NetUtil.isUsableLocalPort(8080); Hutool 3.9

Hutool 3.9 provides a wide range of features that make it an indispensable tool for Java developers. Some of the key features include: Hutool 3

2.6 json – JSON Support

• Built-in lightweight JSON parser (no dependency on Jackson/Gson).
• JSONObject, JSONArray, JSONUtil.

Migration checklist

1. Update Maven/Gradle dependency to Hutool 3.9:

   Hutool has become a go-to library for Java developers due to its: In this article

   • generate a diff-based upgrade script (search-and-replace imports),
   • scan a sample pom.xml/build.gradle and give exact dependency lines,
   • or produce a focused migration guide for DateUtil or JSONUtil. Which would you prefer?

   In this article, we’ll dive into why Hutool 3.9 remains a point of interest for legacy systems and how it simplified Java development before the widespread adoption of Java 11+. What is Hutool 3.9?