I'm trying to use Guice injection for my kotlin project. I'm declaring stuff like

class KotlinWebService @Inject constructor(configuration: KotlinServiceConfiguration) : WebService(configuration.webServerPort, configuration.oidcBaseUrl)

that has mostly been working as expected. The problem I have is when I try to do something to the super during the init. e.g.

init { super.setUnauthorizedUrls(setOf("/path")) }

I get

java.lang.UnsupportedOperationException

. It seems like init is happening before injection. Does anyone have any ideas?

Initializer blocks are called in the order they are declared in the class. If you have properties declared or other initializers after that one, it could be that the superclass is in a bad state when you call it. Does it still crash if you create the object manually? Since it’s throwing a normal Java exception (not a Kotlin or Guice-specific exception), it’s probably something to do with the class design itself and the initialization order, not necessarily Guice or Kotlin.

If I remove the initializer totally the service starts up with no issue. I assume the default constructor that is in the class name definition is doing some kind of initialization of the properties it defines? Let me try running that method on the super class after all initialization has completed to be sure.