Dagger Java SDK supports checks with `@Check`

Introduced 2026-02-05 · score 0.97

HOW TO USE IT

When a Java module function should validate a condition, annotate its method with both `@Function` and `@Check`. It must return `void` or throw an exception to indicate pass or failure, and can be invoked via `dagger check`.

@Object
public class MyModule {
    @Function
    @Check
    public void validateBuild() {
        // Validate conditions; throw an exception on failure.
    }
}

WHY THIS HELPS

Mark a Java module function as a check to validate its build or other repository operation.

REQUIREMENTS AND LIMITATIONS

Version: v0.19.11
@Check (required): Method annotation that marks a function as a check.
@Function (required): Must be combined with `@Check` so the check is a callable function.
Prerequisite: The check must be a callable function; the annotation documentation says it can be invoked via `dagger check`.
Prerequisite: Checks return `void` or throw exceptions to indicate pass/fail.

FIRST-PARTY EVIDENCE

Check the installed version and the source before using it. Entry JSON

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Dagger Java SDK supports checks with `@Check`