Why is the Dagger component not created when writing the interface in Kotlin?

Question

Android

Practicing using Dagger 2 in Android.
Tagged one of the snippets with @Inject

class PreviewMediaFragment @Inject constructor() : Fragment() {
......
}

I create a component interface in Java

@Component
public interface AppComponent {
    public PreviewMediaFragment getFragment();
}

Everything works and now I can get the component in Application

class BaseApplication : Application() {

    lateinit var appcomponent: AppComponent

    override fun onCreate() {
        super.onCreate()
        appcomponent = DaggerAppComponent.create()
    }
}

But why if I create a component interface in Kotlin, then DaggerAppComponent is not generated?
I create the component like this:

@Component
interface AppComponent {
    fun getFragment():PreviewMediaFragment
}

Answer 1

To generate the code, you need to run kapt .
Not relevant to the question, but injecting a fragment constructor is a very bad idea. The fragment constructor should be empty, and therefore it is easier to call it by hand.