public static void addImageLoader(ImageLoader loader){
  if (null != loader && !IMAGE_LOADERS.contains(loader)) {
    IMAGE_LOADERS.add(0,loader);
  }
}

public static void addImageLoader ( ImageLoader loader ) { if ( null != loader && ! IMAGE_LOADERS . contains ( loader ) ) { IMAGE_LOADERS . add ( 0 , loader ) ; } }
add a new image loader to the first position of the list , if it isn ' t there already
