Hutool 39 New -

import cn.hutool.core.date.DateUtil;

Including code examples for each point will make the guide practical. Each example should be a small, self-contained snippet that demonstrates the usage. hutool 39 new

Need to ensure the examples are syntactically correct. For instance, using the new DateUtil method: import cn

import cn.hutool.json.JSONObject;

Another thought: Hutool often adds more stream-like APIs, simplifying collections. Maybe 3.9 introduced more functional programming features. Or maybe a new Date/Time tool that's more robust. Also, perhaps better support for Java 17 features if the version aligns with that. map = new HashMap&lt

Map<String, Object> map = new HashMap<>(); map.put("user.name", "Alice"); map.put("user.age", 30);