code: public static <T> InputReader getInstance(T input, int size, String cs) throws IOException
      {
          return getInstance(input, size, Charset.forName(cs), NO_FEATURES);
      }
docs: Returns InputReader for input
  @param <T>
  @param input Any supported input type
  @param size Ring-buffer size
  @param cs Character set
  @return
  @throws IOException