How to use

writeChar

method

in

hivemall.utils.io.IOUtils

public static void writeString(@Nullable final String s, final OutputStream out)
    throws IOException {
  if (s == null) {
    writeInt(-1, out);
    return;
  }
  final int len = s.length();
  writeInt(len, out);
  for (int i = 0; i < len; i++) {
    char c = s.charAt(i);
    writeChar(c, out);
  }
}

public static void writeString(@Nullable final String s, final OutputStream out)
    throws IOException {
  if (s == null) {
    writeInt(-1, out);
    return;
  }
  final int len = s.length();
  writeInt(len, out);
  for (int i = 0; i < len; i++) {
    char c = s.charAt(i);
    writeChar(c, out);
  }
}