Check for other possible features. Maybe they improved the HttpUtil for asynchronous requests or better error handling. Or added new data structure utilities, like a custom List implementation.
Then, best practices: How to integrate these new features into codebase, performance considerations, avoiding common pitfalls.
Need to mention that in the guide. Also, if there's a new way to handle system properties or environment variables, that could be part of the new features. hutool 39 new
Troubleshooting: Common errors when using new features and how to fix them.
Wait, the user mentioned "Hutool 39 new." Maybe there's a typo here. Typically, versions are like 3.9.0 or similar. So I'll proceed under the assumption that it's version 3.9.0. Check for other possible features
import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.date.DateUtil;
Date date = DateUtil.parseIso8601("2023-10-10T12:30:45Z"); System.out.println(DateUtil.format(date, "yyyy-MM-dd HH:mm:ss"));