美人時計ダウンロードスクリプト scala

import java.net.{URL,HttpURLConnection}
import java.io._

object BijintDownloader extends Application{
  for( hour <- 0 to 23; minute <- 0 to 59){
    val fname = "%02d%02d.jpg".format( hour,minute )
    val url = "http://bijint.com/jp/img/clk/%s".format( fname )

    val urlConn = new URL(url).openConnection.asInstanceOf[HttpURLConnection]
    urlConn.addRequestProperty("REFERER","http://bijint.com/jp/")
    urlConn.connect
    println( fname + ":" + urlConn.getResponseCode )

    val in = urlConn.getInputStream
    val out = new BufferedOutputStream( new FileOutputStream( fname ) )
    val buf  =  Array.make( 1024 , (-1 ).toByte )

    def writeFile( len:Int ):Unit = {
      if( len > 0 ) {
        Thread.sleep( 10  )
        out.write( buf )
        writeFile( in.read( buf ) )
      }
    }
    writeFile( in.read( buf ) )

    out.flush
    out.close
    in.close

    Thread.sleep( 1000  )

    println( "Download:" + fname )
  }
}