private static String getPOS(final AnalyzedTokenReadings atr) { final StringBuilder sb = new StringBuilder(); final int readNum = atr.getReadingsLength(); for (int i = 0; i < readNum; i++) { if (!atr.isWhitespace()) { sb.append(atr.getAnalyzedToken(i).getPOSTag()); if (i != readNum - 1) { sb.append('+'); } } } return sb.toString(); }