Convert from java.util.Vector to a scala Seq

JavaConverters is a bit more idiomatic than JavaConversions.

import collection.JavaConverters._

val v = new java.util.Vector[Int]
val s: Seq[Int] = v.asScala

Import JavaConversions:

import collection.JavaConversions._

val v = new java.util.Vector[Int]()
val s = v.toSeq
// s is of type Seq[Int]