For JAX-RS endpoints with optional query params with default values, I currently use

fun hello(@QueryParam("greeting") @DefaultValue("hi") greeting: String = "hi")

to get the same default value when called via REST or directly. Is there a way to avoid duplicating the default value?

You can declare the default value in a

const val

and then use it in both expressions.

const val HELLO_GREETING_DEF = "hi"

hello(@QueryParam("greeting") @DefaultValue(HELLO_GREETING_DEF) greeting: String = HELLO_GREETING_DEF)