return ((1 << getType(ch)) & ((1 << UPPERCASE_LETTER) | (1 << LOWERCASE_LETTER) | (1 << TITLECASE_LETTER) | (1 << MODIFIER_LETTER) | (1 << OTHER_LETTER))) != 0;
return isLetter((int)ch);
  public static boolean isLetter(char ch)  {    return ((1 << getType(ch))            & ((1 << UPPERCASE_LETTER)               | (1 << LOWERCASE_LETTER)               | (1 << TITLECASE_LETTER)               | (1 << MODIFIER_LETTER)               | (1 << OTHER_LETTER))) != 0;  }