Java to Swift Migration

The target is equivalent capability and behavior, not line-by-line resemblance. Compiling Swift is an intermediate checkpoint only.

Non-negotiable completion contract

• Record every in-scope Java class, interface, enum, record, annotation, nested type, constructor, method, and externally visible contract.
• Every record is IMPLEMENTED, ADAPTED with evidence, or explicitly excluded with approved rationale. Stubs, fatalError, empty bodies, placeholders, and silent omissions do not count.
• Preserve values, errors, ordering, state, concurrency, serialization, resources, and side effects unless an intentional change is approved.
• Swift-native architecture may replace Java mechanics but cannot reduce capability.
• Do not declare completion before swift-java-migration-testing passes full source-test and differential gates.

Workflow

1. Freeze scope and baselines

Record source/target commits, Java and Swift tools, modules/targets, generated sources, platforms, feature flags, external dependencies, and exclusions. Capture the Java build/test baseline first.

2. Build the source ledger