将阿拉伯数字转换成中文汉字格式

import java.text.*;

/**
 * @author wang wei wKF22287
 * @since 2010
 */
public class CNNumberTools
{

    /** "零","壹","贰","叁","肆","伍","陆","柒","捌","玖" */
    private final static String[] nums = new String[] { "\u96f6", "\u58f9",
            "\u8d30", "\u53c1", "\u8086", "\u4f0d", "\u9646", "\u67d2",
            "\u634c", "\u7396" };

    /** "拾","佰","仟","万","亿" */
    private final static String[] units = new String[] { "\u62fe", "\u4f70",
            "\u4edf", "\u4e07", "\u4ebf" };

    private final static NumberFormat numberFormat = new DecimalFormat(
        "#,####.#");

    public static String convertToCNNumber(double number)
    {
        if (number > Double.MAX_VALUE || number < 0.0)
        {
            return null;
        }

        String srcNum = numberFormat.format(number); //按个数转换,如"21,1234,4567,5487.4543544"

        String prefixNum = srcNum;
        if (srcNum.indexOf(".") != -1)
        {
            prefixNum = srcNum.substring(0, srcNum.indexOf(".")); //小数点前
        }

        StringBuffer result = new StringBuffer(0); //用于保存结果

        String[] numPices = prefixNum.split(","); //4个数字一组
        for (int i = 0; i < numPices.length; i++) //遍历每个组
        {
            for (int j = 0; j < numPices[i].length(); j++) //遍历组中的每个数字
            {
                int k = Integer.parseInt(String.valueOf(numPices[i].charAt(j)));
                int len = numPices[i].length();
                result.append(nums[k]); //变成汉字
                result.append(len - 2 - j >= 0 && k > 0 ? units[len - 2 - j]
                        : ""); //添加仟佰拾
                result
                    .append(j != len - 1 ? ""
                            : ((i + numPices.length) % 2 == 0 ? (i == numPices.length - 1 ? ""
                                    : units[3])
                                    : i != numPices.length - 1 ? units[4] : "")); //添加亿万
            }
        }

        String resutlStr = result.toString();

        resutlStr = resutlStr.replaceAll(nums[0] + "{2,}", nums[0]); //"零零" to "零"
        resutlStr = resutlStr.replaceAll(nums[0] + units[3] + "{1}", units[3]); //"零万" to "万"
        resutlStr = resutlStr.replaceAll(nums[0] + units[4] + "{1}", units[4]); //"零亿" to "亿"
        resutlStr = resutlStr.replaceAll(units[4] + units[3] + "{1}", units[4]); //"亿万" to "亿零"
        if (resutlStr.lastIndexOf(nums[0]) == resutlStr.length() - 1)
        { //去掉最后的"零"
            resutlStr = resutlStr.substring(0, resutlStr.length() - 1);
        }

        return resutlStr;
    }

    public static void main(String[] args)
    {
        String a = CNNumberTools.convertToCNNumber(Long.MAX_VALUE);
        System.out.println(Long.MAX_VALUE);
        System.out.println(a);

        // 9223372036854775807
        // 玖佰贰拾贰亿叁仟叁佰柒拾贰万零叁佰陆拾捌亿伍仟肆佰柒拾柒万陆仟
    }

}

一个考试题目，没写全，欢迎指点