using Threads and runnables in Scala

threads.scala

package multi

import java.util.concurrent.Callable

object Threads {
  def main(args: Array[String]) : Unit  = {
    implicit def funcToCallable[A](func : () => A): Callable[A] = new Callable[A] { println("creating callable");def call() :A = func() }
    implicit def funcToRunnable( func : () => Unit ) = new Runnable(){ println("creating runnable");def run() = func()}
    
    //bad. cannot be tested properly. plus completely screws up the idea of runnable (viz to have the choice of not using threads with minimum code changes)
    new Thread(new Runnable{
      def run {println("hi")}
    }).start

    def run2() = {println("hi2")}

    //good - uses implicit conversions
    new Thread( () => run2).start

  }


}