Stop Letting Claude Code Hallucinate Your Modernization: Write OpenRewrite LST Recipes Instead

Letting autonomous AI agents directly rewrite million-line Java monoliths is a dangerous game of Russian roulette with silent runtime bugs. The real way to execute large-scale JDK 26 upgrades is using Claude Code CLI to author deterministic OpenRewrite LST recipes—not blindly edit source files.

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Why Most Developers Get This Wrong

Yolo-prompting Claude Code CLI to edit hundreds of .java files directly, introducing non-existent API calls and broken imports.

Stop Letting Claude Code Hallucinate Your Modernization: Write OpenRewrite LST Recipes Instead

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Your AI Re-Reads Your Whole Codebase Every Session. Hand It a Map Instead