public static URLImage createToFileSystem(EncodedImage placeholder,String file,String url,ImageAdapter adapter){
  return new URLImage(placeholder,url.intern(),adapter,null,file.intern());
}

public static URLImage createToFileSystem ( EncodedImage placeholder , String file , String url , ImageAdapter adapter ) { return new URLImage ( placeholder , url . intern ( ) , adapter , null , file . intern ( ) ) ; }
creates an image the will be downloaded on the fly as necessary
