Is this scala parallel array code threadsafe?

Question

I want to use parallel arrays for a task, and before I start with the coding, I'd be interested in knowing if this small snipept is threadsafe:

import collection.mutable._

var listBuffer = ListBuffer[String]("one","two","three","four","five","six","seven","eight","nine")
var jSyncList  = java.util.Collections.synchronizedList(new java.util.ArrayList[String]())
listBuffer.par.foreach { e =>
    println("processed :"+e)
    // using sleep here to simulate a random delay
    Thread.sleep((scala.math.random * 1000).toLong)
    jSyncList.add(e)
}
jSyncList.toArray.foreach(println)

Are there better ways of processing something with parallel collections, and acumulating the results elsewhere?