How to declare a class containing generic type fields in kotlin?

I have a data class in kotlin

data class APIResponse<out T>(val status: String,val code: Int,val message: String,val data: T?)

I want to declare another class to contain this:

class APIError(message: String,response: APIResponse) : Exception(message) {}

But kotlin gave the error: com The class apiresponse defined in mypackagename requires a type parameter

In Java, I can do this:

class APIError extends Exception {

    APIResponse response;

    public APIError(String message,APIResponse response) {
        super(message);
        this.response = response;
    }
}

How to add @ r_ 404_ 2324 @ for kotlin?

Solution

Content in Java is of primitive type In the star projects section, the kotlin document says:

They describe their use cases:

Therefore, your apierror class becomes:

class APIError(message: String,val response: APIResponse<*>) : Exception(message) {}