3.9 Better — Hutool

// 4. SecureUtil: simple MD5 String password = "admin123"; String md5Hex = SecureUtil.md5(password); Console.log("MD5 of '{}': {}", password, md5Hex); } }

public class Hutool39FeatureDemo {

// 3. CollUtil: safe operations on collections List<String> list = CollUtil.newArrayList("a", "b", "c"); Console.log("Join result: {}", CollUtil.join(list, "-")); hutool 3.9

If you want a you’d propose for Hutool (even though 3.9 is old), I can help you design the API and implementation. String md5Hex = SecureUtil.md5(password)

// 2. StrUtil: check if string is blank String input = " Hutool 3.9 "; if (StrUtil.isNotBlank(input)) { Console.log("Trimmed: '{}'", StrUtil.trim(input)); } Console.log("MD5 of '{}': {}"