java-kotlin-migration-assistant

Migrate Java Spring code to Kotlin incrementally by translating services, repositories, and entities while preserving proxies, transactions, and serialization. Validate behavior after each step using tests and integration checks to prevent regressions.

Handling Lombok removal during Java to Kotlin migration requires strict constraints to maintain binary compatibility. The migration imposes specific guidelines to replace Lombok annotations safely while preserving public contracts and behavior.

You can incrementally migrate multi-module Spring projects to Kotlin over several sprints. The process supports mixed Java/Kotlin modules, allowing you to translate classes progressively while maintaining Java-Kotlin interop and validating behavior continuously.

Nullability handling when converting Spring entities from Java to Kotlin involves strict constraints to prevent regressions. The migration enforces specific rules for JPA mappings and nullability to maintain compatibility and preserve behavior across the codebase.

JPA proxy behaviors can change when moving to Kotlin due to default final classes and nullability differences. Prevent regressions by applying strict migration constraints for JPA mappings and proxy behavior, ensuring transactions and serialization remain compatible.

You need a migration plan before converting your Spring Java codebase to Kotlin to determine which classes to translate first. The plan describes how to preserve behavior and validate it, enabling a safer transition path across multi-module projects.