Fix null pointer exception in StrUtil.blankToDefault when input is null (issue #I23K7F).
The core features and capabilities associated with this version include: EEPROM Wiping Hutool 3.9 UPD
Security is never "done." This update includes minor but vital patches for SecureUtil , specifically around MD5 and SHA-256 encryption helpers. It’s about making sure your one-liner encryption remains as secure as it is simple. 4. Why Still Use 3.9? Fix null pointer exception in StrUtil