public boolean getBoolean (int index) throws JSONException {
        Object object = this.get(index);
        if (object.equals(Boolean.FALSE)
            || (object instanceof String && ((String) object)
                    .equalsIgnoreCase("false"))) {
            return false;
        }
        else if (object.equals(Boolean.TRUE)
                 || (object instanceof String && ((String) object)
                         .equalsIgnoreCase("true"))) { return true; }
        throw new JSONException("JSONArray[" + index + "] is not a boolean.");
    }