Character.UnicodeBlock中cjk的说明详解

/**
   * 校验一个字符是否是汉字
   * 
   * @param c
   *      被校验的字符
   * @return true代表是汉字
   */
  public static boolean isChineseChar(char c) {
    try {
      return String.valueOf(c).getBytes("UTF-8").length > 1;
    } catch (UnsupportedEncodingException e) {
      e.printStackTrace();
      return false;
    }
  }

  /**
   * 验证字符串内容是否包含下列非法字符<br>
   * `~!#%^&*=+\\|{};:'\",<>/?○●★☆☉♀♂※¤╬の〆
   * 
   * @param content
   *      字符串内容
   * @return 't'代表不包含非法字符，otherwise代表包含非法字符。
   */
  public static char validateLegalString(String content) {
    String illegal = "`~!#%^&*=+\\|{};:'\",<>/?○●★☆☉♀♂※¤╬の〆";
    char isLegalChar = 't';
    L1: for (int i = 0; i < content.length(); i++) {
      for (int j = 0; j < illegal.length(); j++) {
        if (content.charAt(i) == illegal.charAt(j)) {
          isLegalChar = content.charAt(i);
          break L1;
        }
      }
    }
    return isLegalChar;
  }

  /**
   * 验证是否是汉字或者0-9、a-z、A-Z
   * 
   * @param c
   *      被验证的char
   * @return true代表符合条件
   */
  public static boolean isRightChar(char c) {
    return isChinese(c) || isWord(c);
  }

  /**
   * 校验某个字符是否是a-z、A-Z、_、0-9
   * 
   * @param c
   *      被校验的字符
   * @return true代表符合条件
   */
  public static boolean isWord(char c) {
    String regEx = "[\\w]";
    Pattern p = Pattern.compile(regEx);
    Matcher m = p.matcher("" + c);
    return m.matches();
  }

  /**
   * 判定输入的是否是汉字
   * 
   * @param c
   *      被校验的字符
   * @return true代表是汉字
   */
  public static 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.GENERAL_PUNCTUATION
        || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION
        || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS) {
      return true;
    }
    return false;
  }

  /**
   * 校验String是否全是中文
   * 
   * @param name
   *      被校验的字符串
   * @return true代表全是汉字
   */
  public static boolean checkNameChese(String name) {
    boolean res = true;
    char[] cTemp = name.toCharArray();
    for (int i = 0; i < name.length(); i++) {
      if (!isChinese(cTemp[i])) {
        res = false;
        break;
      }
    }
    return res;
  }