把阿拉伯数字转换成汉字的形式，如何做捏

class MoneyFormat{   private final String [] pattern ={"零","壹","贰","叁","肆","伍","陆","柒","捌","玖"};   private final String [] cPattern ={"","拾","佰","仟","万","拾","佰","仟","亿"};   private final String [] cfPattern = {"","角","分"};   private final String ZEOR = "零";   public MoneyFormat(){       System.out.println("run...");       }       public String format(String moneyString){    int dotPoint = moneyString.indexOf("."); //判断是否为小数    String moneyStr;          if(dotPoint != -1){     moneyStr = moneyString.substring(0,moneyString.indexOf("."));    }    else{     moneyStr = moneyString;    }    StringBuffer fraction = null;   //小数部分的处理,以及最后的yuan.    StringBuffer ms = new StringBuffer();     for(int i = 0;i < moneyStr.length();i++){     ms.append(pattern[moneyStr.charAt(i) - 48]); //按数组的编号加入对应大写汉字    }        int cpCursor = 1;    for(int j = moneyStr.length() - 1;j > 0;j--){     ms.insert(j,cPattern[cpCursor]);   //在j之后加字符,不影响j对原字符串的相对位置                //只是moneyStr.length()不断增加                //insert(j,"string")就在j位置处插入,j=0时为第一位     cpCursor = cpCursor == 8?1:cpCursor + 1;    //亿位之后重新循环    }            while(ms.indexOf("零拾") != -1){  //当十位为零时用一个"零"代替"零拾"              //replace的起始于终止位置     ms.replace(ms.indexOf("零拾"),ms.indexOf("零拾") + 2,ZEOR);    }    while(ms.indexOf("零佰") != -1){  //当百位为零时,同理     ms.replace(ms.indexOf("零佰"),ms.indexOf("零佰") + 2,ZEOR);    }    while(ms.indexOf("零仟") != -1){  //同理     ms.replace(ms.indexOf("零仟"),ms.indexOf("零仟") + 2,ZEOR);    }    while(ms.indexOf("零万") != -1){  //万需保留，中文习惯     ms.replace(ms.indexOf("零万"),ms.indexOf("零万") + 2,"万");    }    while(ms.indexOf("零亿") != -1){  //同上     ms.replace(ms.indexOf("零亿"),ms.indexOf("零亿") + 2,"亿");    }    while(ms.indexOf("零零") != -1){//有连续数位出现零，即有以下情况，此时根据习惯保留一个零即可     ms.replace(ms.indexOf("零零"),ms.indexOf("零零") + 2,ZEOR);    }    while(ms.indexOf("亿万") != -1){  //特殊情况，如:100000000,根据习惯保留高位     ms.replace(ms.indexOf("亿万"),ms.indexOf("亿万") + 2,"亿");    }    while(ms.lastIndexOf("零") == ms.length()-1){  //当结尾为零j，不必显示,经过处理也只可能出现一个零     ms.delete(ms.lastIndexOf("零"),ms.lastIndexOf("零") + 1);    }            int end;    if((dotPoint = moneyString.indexOf(".")) != -1 ){ //是小数的进入      String fs = moneyString.substring(dotPoint + 1,moneyString.length());     if(fs.indexOf("00") == -1 || fs.indexOf("00") >= 2){//若前两位小数全为零，则跳过操作      end = fs.length() > 2?2:fs.length();  //仅保留两位小数      fraction = new StringBuffer(fs.substring(0,end));      for(int j = 0;j < fraction.length();j++){       fraction.replace(j,j+1,this.pattern[fraction.charAt(j) - 48]); //替换大写汉字      }      for(int i = fraction.length();i > 0;i--){  //插入中文标识       fraction.insert(i,cfPattern[i]);      }      fraction.insert(0,"元");      //为整数部分添加标识     }     else{      fraction = new StringBuffer("元整");      }         }    else{     fraction = new StringBuffer("元整");    }         ms.append(fraction);         //加入小数部分    return ms.toString();   }               public static void main(String [] ar){    //System.out.println(new MoneyFormat().format("10005022.123009"));    System.out.println(new MoneyFormat().format("999"));   }  }