I’m struggling with value classes in generics and interoperability with Java or Groovy. Value class are inlined: Inline classes | Kotlin 1 except for generics.
Given following value class and interface (Kotlin):
@JvmInline
value class ValueClass(val id: String)
interface ValueClassListProvider {
    @Suppress("INAPPLICABLE_JVM_NAME")
    @JvmName("values")
    fun values(): List<ValueClass>
    @Suppress("INAPPLICABLE_JVM_NAME")
    @JvmName("value")
    fun value(): ValueClass
}
how can I implement ValueClassListProvider interface in Java or Groovy?
class ValueClassListProviderImplJava implements ValueClassListProvider {
    public List<ValueClass> values() {
        return Arrays.asList(new ValueClass("1"));
    }
    public String value() {
        return "1";
    }
}
Trying to run following code:
public static void main(String[] args) {
    ValueClassListProviderImplJava provider = new ValueClassListProviderImplJava();
    System.out.println(provider.values());
}
result in:
java: cannot find symbol
  symbol:   constructor ValueClass(java.lang.String)
  location: class pl.test.valueclass.ValueClass
For Groovy implementation of ValueClassListProvider interface:
class ValueClassListProviderImplGroovy implements ValueClassListProvider {
    List<String> values() {
        return ["1", "2"]
    }
    String value() {
        return "1"
    }
}
it compiles and seems to work, but when this implementation is later used in Kotlin code (suppose this is stub used in spock tests), it blows with:
java.lang.ClassCastException: class java.lang.String cannot be cast to class pl.test.valueclass.ValueClass
Is it possible to create instance of value class in Java or Groovy (needed for generics)?