Hi. I’m wondering why my annotation is not visible in Field(java) even though I set annotation targe...

# announcements

[Sangmin Lee]

Hi. I’m wondering why my annotation is not visible in Field(java) even though I set annotation target as Field and Property.

// Annotation below
@Retention(AnnotationRetention.RUNTIME)
@Target(AnnotationTarget.PROPERTY, AnnotationTarget.FIELD)
annotation class MyAnnotation

// Class
data class MyClass (
    @MyAnnotation
    var myProperty: String,
    @MyAnnotation
    var maybeICouldBeField: String
)

// Verification Code
val KProperties = MyClass::class.memberProperties
KProperties.forEach() {
    println(it.annotations)
    println(it?.javaField?.annotations)
}

In Verification Code, why I can’t see any annotation from javaField? 🤔

[thanksforallthefish]

@field:MyAnnotation should help. maybe

[Roukanken]

afaik, the annotation will only choose the most appropriate target; not all of them
if you use @field:MyAnnotation then it will be visible on Java field, but not in it.annotations

[ephemient]

https://kotlinlang.org/docs/annotations.html#annotation-use-site-targets

If there are multiple applicable targets, the first applicable target from the following list is used:

- param

- property

- field

[Sangmin Lee]

Oh, thanks for your answers!
Then the applied target is the only first applicable one, property, so java field couldn’t see it.

[ephemient]

since you didn't specify, and param can apply, your annonation is effectively @param: and not @field:.

[Roukanken]

*`@property:` no? Since VALUE_PARAMETER is not in targets