金额转换工具

/**
 * 金额转换工具
 * @Author yinjianbo
 * @Description TODO
 * @Date 2019-12-23
 */
public class MoneyUpperUntil {

   private static final String UNIT = "万千佰拾亿千佰拾万千佰拾元角分";
   private static final String DIGIT = "零壹贰叁肆伍陆柒捌玖";
   private static final Double MAX_VALUE = 9999999999999.99D;

   /**
    * 金额转换中文大写
    * @author yinjianbo
    * @param
    * @return
    */
   public static String change(double v) {
      if (v < 0 || v > MAX_VALUE){
         return "参数非法!";
      }
      long l = Math.round(v * 100);
      if (l == 0){
         return "零元整";
      }
      String strValue = l + "";
      // i用来控制数
      int i = 0;
      // j用来控制单位
      int j = UNIT.length() - strValue.length();
      String rs = "";
      boolean isZero = false;
      for (; i < strValue.length(); i++, j++) {
         char ch = strValue.charAt(i);
         if (ch == '0') {
            isZero = true;
            if (UNIT.charAt(j) == '亿' || UNIT.charAt(j) == '万' || UNIT.charAt(j) == '元') {
               rs = rs + UNIT.charAt(j);
               isZero = false;
            }
         } else {
            if (isZero) {
               rs = rs + "零";
               isZero = false;
            }
            rs = rs + DIGIT.charAt(ch - '0') + UNIT.charAt(j);
         }
      }
      if (!rs.endsWith("分")) {
         rs = rs + "整";
      }
      rs = rs.replaceAll("亿万", "亿");
      return rs;
   }

   public static void main(String[] args) {
      System.out.println(change(12460));
   }
}