Developer spends weeks fixing Java obfuscation tool built to hide code from AI assistants

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A developer built a Java code obfuscator to comply with a client contract clause banning AI assistants on their codebase, planning to rename all identifiers before sending code to Claude and reverse the changes afterward. What seemed like a two-day regex task took over two weeks just to compile and another month before tests passed. The core problem was that Java frameworks like Spring Data derive runtime behavior directly from method names, meaning renaming findByActiveTrue to a hash caused the application to crash at startup. The developer had to build a framework-aware exclusion system that preserved Spring Data query method names while still obfuscating other identifiers. The experience revealed that Java obfuscation for AI is a structural framework problem rather than a simple string-replacement task.

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