scala> import scala.reflect.ClassTag
import scala.reflect.ClassTag

scala> def f[A: ClassTag](a: A) = java.util.Arrays.asList(Array(a): _*)
f: [A](a: A)(implicit evidence$1: scala.reflect.ClassTag[A])java.util.List[A]

scala> f(".")
res0: java.util.List[String] = [.]

scala> f(0)
res1: java.util.List[Int] = [0]

scala> def i(a: Int) = java.util.Arrays.asList(Array(a): _*)
i: (a: Int)java.util.List[Int]

scala> i(0)
res2: java.util.List[Int] = [0]

scala> def o(a: Any) = java.util.Arrays.asList(Array(a): _*)
o: (a: Any)java.util.List[Any]

scala> o(".")
res3: java.util.List[Any] = [.]

scala> class V(val a: Int) extends AnyVal
defined class V

scala> f(new V(0))
res4: java.util.List[V] = [V@0]

scala> o(new V(0))
res5: java.util.List[Any] = [V@0]

scala> :quit