code: public void extractCharacterFiles() throws IOException, URISyntaxException {
  		String		charactersDir = LwjgFontUtil.prepareDirectory("characters").getPath();
  		URL			urlCharacters = this.getClass().getClassLoader().getResource(this.getClass().getPackage().getName().replaceAll("\\.", "/") + "/characters/");
  
  		if (urlCharacters.toURI().getScheme().equals("file")) {
  			extractCharacterFilesFromDir(urlCharacters);
  		} else {
  			extractCharacterFilesFromJar(urlCharacters);
  		}
  	}
docs: TODO リファクタ