java将金额转化为大写金额

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

    // 10进制单位 

    private static String[] dw = {"","拾","佰","仟"}; 

     // 数值进度单位参考 http://www.douban.com/group/topic/5404723/  http://zhidao.baidu.com/question/51925487.html 
     // 1000进制单位 

     private static String[] dw2 = {"","萬","億","兆","京","垓","杼","穰","溝","澗","正","載","極","恆河沙","阿僧祇","那由他","不可思議","无量","大数"}; 

     private static String[] dw1 = {"角","分"}; 

     public static void main(String[] args) { 

         String test = "009900990000"; 

         System.out.println(parse(test)); 

     } 

      

     private static String parse(String str) { 

//      str = str.replaceAll("^(0+)(.*)", "$2").replaceAll("(.*?)(0+)$", "$1"); 

//      if(str.indexOf(".") == 0) { 

//          str = "0"+str; 

//      } 

         // 判断是否为合格数字 

         if(str.matches("^\\d+(\\.\\d+)?\\d*$")) { 

             String integer = ""; 

             String decimal = ""; 

             // 拆分成整数和小数部分 

             int pos = str.indexOf("."); 

             if(pos >=0 ) { 

                 integer = str.substring(0,pos); 

                 decimal = str.substring(pos+1); 

                 decimal = decimal.replaceAll("(.*?)(0+)$", "$1"); 

                   

             } else { 

                 integer = str; 

             } 

             integer = integer.replaceAll("^(0+)(.*)", "$2"); 

            if(integer.isEmpty() && !decimal.isEmpty()) { 

                 integer = "0"; 

             } 

             // 解析整数字符串 

             String intStr =  parseIntger(integer); 

             // 解析小数字符串 

             String decimalStr = parseDecimal(decimal,!intStr.isEmpty()); 

             if(!intStr.isEmpty()) { 

                 intStr += "元"; 

                 if(integer.endsWith("0") && !decimal.isEmpty() && !decimal.startsWith("0")){ 

                     intStr+="零"; 

                 } 

             } else if(decimalStr.isEmpty()) { 

                 intStr = "零元"; 

             } 

             return intStr + (decimalStr.isEmpty()?"整":decimalStr); 

         } 

         throw new IllegalArgumentException(str); 

     } 

       

     /** 

      * 解析整数 规则为： 

      *  将字符串从后往前分割成四个字符一组的字符串二维数组(对应1000进制单位) 

      *  分别解析每个数组为10进制单位中对应的字符串 

      *  合并到一起则为整个字符串 

      * @param str 

      * @return 

      */

     private static String parseIntger(String str) { 

         if(null == str || str.isEmpty()) { 

             return ""; 

         } 

         // 分割字符串为四个字符一组的字符串二维数组