Ok may be it's wonderful piece of Object Oriented design but still "simple things are not simple" :(
With apache commons io to the rescue things become "more" simple:
InputStream input = getClass().getClassLoader().
List lines = IOUtils.readLines(input, "UTF-8");
File file = new File("/commons/io/project.properties");
List lines = FileUtils.readLines(file, "UTF-8");
Still not simple enough but much better ;)