private static final String[] digits = new String[]{" 零", "壹", "贰", "叁",
            "肆", "伍", "陆", "柒", "捌", "玖"};

private static final String[] radices = new String[]{"", "拾", "佰", "仟"};

private static final String[] bigRadices = new String[]{"", "万", "亿", "万"};

   /**
     * 算法：输入数字，将其转换为中文。
     * 
     * @param num
     *            数字字符串
     * @return 转换结果(中文)
     */
    public static String covnt(String num)
    {
        String integral = num; // 整数部分
        String outputCharacters = ""; // 最终转换输出结果

        String d = null;
        int zeroCount = 0, p = 0, quotient = 0, modulus = 0;

        for (int i = 0; i < integral.length(); i++)
        {
            p = integral.length() - i - 1;
            d = integral.substring(i, i + 1);

            quotient = p / 4;
            modulus = p % 4;
            if (d.equals("0"))
            {
                zeroCount++;
            }
            else
            {
                if (zeroCount > 0)
                {
                    outputCharacters += digits[0];
                }
                zeroCount = 0;
                outputCharacters += digits[Integer.parseInt(d)]
                        + radices[modulus];
            }
            if (modulus == 0 && zeroCount < 4)
            {
                outputCharacters += bigRadices[quotient];
            }
        }
        return outputCharacters;
    }