Hutool’s maintainers (Looly et al.) enforce strict semantic versioning. Upgrading from 3.8.x to 3.9.x requires zero code changes for 95% of projects.
String cityName = ObjectUtil.defaultIfNull(user, new User()) .getAddressOptional() .orElse(new Address()) .getCityName(); While Java 8 introduced Optional , Hutool 3.9’s ObjectUtil provides a faster, non-heap-allocated alternative for high-performance scenarios. Given that we are now in the era of Java 21, is learning "hutool 39 new" a waste of time? hutool 39 new
// Before 3.9 (Verbose) SnowflakeIdWorker worker = new SnowflakeIdWorker(0, 0); long id = worker.nextId(); String idStr = Long.toString(id); // New in 3.9 (One line) String distributedId = IdUtil.getSnowflakeNextIdStr(); Console.log("Safe for JS: {}", distributedId); Java 8’s streams are powerful, but verbose. Hutool 3.9 introduced CollUtil methods that mimic functional programming without the lambda boilerplate for simple tasks. Hutool’s maintainers (Looly et al
If you are still on the Hutool 3.x line, upgrading to is a no-brainer. It offers hundreds of "new" micro-features without disrupting your existing architecture. Given that we are now in the era