Convert Comparable<*> but get error inferred type is Any? but Nothing was expected I am trying to convert this piece of java code to kotlin public int compare1(Comparable c, Object o) { return c.compareTo(o); } to kotlin code: fun compare1(c: Comparable, o: Any?): Int { return c.compareTo(o) } But get error Type mismatch: inferred type is Any? but Nothing was expected Any reason why this error occurs? Thanks