code: public static boolean isChinese(String strName) {
          char[] ch = strName.toCharArray();
          for (int i = 0; i < ch.length; i++) {
              char c = ch[i];
              if (isChinese(c)) {
                  return true;
              }
          }
          return false;
      }
docs: 判断中文汉字和符号