Example of using implicit conversions to avoid creating anonymous inner classes

ImplicitTimerDemo.scala

package sample

import java.util.{TimerTask, Timer}

/**
 * Shows Java way of creating an anonymous inner class to supply the code for a TimerTask.
 */
object TimerDemo extends Application {
  new Timer().schedule(new TimerTask {
    def run() {
      println("Hello")
    }
  }, 100L)
}

/**
 * Uses an implicit conversion to simplify creating a TimerTask.
 */
object ImplicitTimerDemo extends Application {
  import TimerHelper._

  val newTimer = new Timer().schedule({
    println("Hello")
  }, 100L)
}

/**
 * Implicit conversions for timers (in another source file, most likely)
 */
object TimerHelper {
  /**
   * Converts a block of code into a TimerTask
   */
  implicit def toTimerTask(code: => Unit): TimerTask = new TimerTask {
    def run() {
      code
    }
  }
}

// Kris Nuttycombe's alternative (adapted)

case class TimerW(timer: Timer) {
  def scheduleAfter(delay: Long)(code: => Unit): Unit = timer.schedule(
    new TimerTask {
      override def run() = code
    }, delay)
}

object NuttycombeExample extends Application {
  import TimerW._

  (new Timer()).scheduleAfter(100L) {
    println("Hello")
  }
}

object TimerW {
  implicit def t2tw(timer: Timer): TimerW = TimerW(timer)
}