根据Unicode编码完美的判断中文汉字和符号

 // 根据Unicode编码完美的判断中文汉字和符号
 private boolean isChinese(char c) {
  Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);
  if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS
    || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS
    || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A
    || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B
    || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION
    || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS
    || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION) {
   return true;
  }
  return false;
 }