import cn.hutool.core.lang.Assert; import cn.hutool.core.util.DesensitizedUtil; import java.util.Collections; import java.util.List; public class CoreUtilityDemo public static void main(String[] args) // 1. Passport Privacy Desensitization (New in 5.8.39) String rawPassport = "G12345678"; String maskedPassport = DesensitizedUtil.passport(rawPassport); System.out.println("Protected: " + maskedPassport); // Prints protected formatting // 2. Clear Collection Verification Assertions List emptyReportQueue = Collections.emptyList(); Assert.isEmpty(emptyReportQueue, "Process aborted: The payload tracking queue must be empty!"); Use code with caution. Example B: Configuring Global DB Streaming Properties
Migration Guide (if applicable)
Introduction to Hutool
Below is an extensive guide covering the architecture of the tool library, the newest structural additions to version 5.8.39, and practical implementation strategies for modern production environments. Architecture Overview: The Hutool Philosophy hutool 39 new
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.
Hutool 39 fixes a 4-year-old bug where CSV fields containing \n inside quotes broke parsing. The new CsvReadConfig.setErrorOnDifferentFieldCount(false) gracefully handles malformed rows.
: Continued refinement of core utilities, such as XXXToMapCopier , to reduce overhead during object-to-map transformations. import cn
Based on recent release trends and community feedback for version 5.8.39, the update focuses on the following areas:
Now, filling in each section with assumed features based on common Java library updates. For example:
now features a lock-free parsing algorithm, making it up to 40% faster than previous iterations. Hutool 39 fixes a 4-year-old bug where CSV
Examples are crucial. For each new feature, a short code example. Make sure the code is correct and shows practical applications. For instance, using a new method in BeanUtils to convert a Map to a Bean with nested properties.
Data governance and regulatory compliance are top priorities for enterprise development. The DesensitizedUtil class receives an essential upgrade:
Versions 3.8.x were solid, but 3.9 introduced three major pillars that fundamentally changed how we use the library.
: Support for Doubao and Grok APIs has been heavily extended, allowing developers to generate multi-modal content and specify target generative video models out of the box. 2. Enhanced Data Privacy ( core )