Calling a Scala from Java Play Framework which takes a ClassTag

Question

I am trying to make a call from a Play Java class to a Scala method which takes a ClassTag as a parameter My failing attempt is ``` Option localUser = Cache.getAs(userId.userId(), app, new ClassTag() ); ``` The API method looks like this ``` Cache.getAs(String key, Application app, ClassTag ct ); ```

Accepted Answer

I had the same issue when calling a different Scala API from Java. You'd use:

```
ClassTag<LocalUser> tag = scala.reflect.ClassTag$.MODULE$.apply(LocalUser.class);
```

I'm not sure why Scala requires another class and a static object, but I think this is essentially the equivalent of a static method `ClassTag.apply(Class)`.

Calling a Scala from Java Play Framework which takes a ClassTag

Solution

Problem