Hutool 39 Jun 2026

// Copy file with one line FileUtil.copy("d:/test.txt", "d:/test2.txt", true); // Read content List lines = FileUtil.readLines("d:/test.txt", "UTF-8"); Use code with caution. Copied to clipboard 3. HTTP Requests

: Most APIs are backward compatible, but check deprecation warnings. hutool 39

: Mentioning the specific head unit (e.g., NBT-EVO) helps experts give you better advice. Include Keywords // Copy file with one line FileUtil

| 3.9.x | 5.x+ | |-------|------| | Convert.toStr() | Convert.toStr() (same) | | SecureUtil.aes() | SecureUtil.aes() (improved) | | ImgUtil.pressText() | More parameters | | No CollUtil.getFirst() | CollUtil.getFirst() | you don't see the plumbing

// #36: Unique ID String userId = IdUtil.fastSimpleUUID();

It taught a generation of coders that When you look at a piece of code written with Hutool, you don't see the plumbing; you see the intent.