金额转换，阿拉伯数字的金额转换成中国传统的形式如：（￥1011）－>（一千零一拾一元整）输出。

package test.money;

import java.text.NumberFormat;
import java.util.HashMap;

public class SimpleMoneyFormat {

public static final String EMPTY = "";
public static final String ZERO = "零";
public static final String ONE = "壹";
public static final String TWO = "贰";
public static final String THREE = "叁";
public static final String FOUR = "肆";
public static final String FIVE = "伍";
public static final String SIX = "陆";
public static final String SEVEN = "柒";
public static final String EIGHT = "捌";
public static final String NINE = "玖";
public static final String TEN = "拾";
public static final String HUNDRED = "佰";
public static final String THOUSAND = "仟";
public static final String TEN_THOUSAND = "万";
public static final String HUNDRED_MILLION = "亿";
public static final String YUAN = "元";
public static final String JIAO = "角";
public static final String FEN = "分";
public static final String DOT = ".";

private static SimpleMoneyFormat formatter = null;
private HashMap chineseNumberMap = new HashMap();
private HashMap chineseMoneyPattern = new HashMap();
private NumberFormat numberFormat = NumberFormat.getInstance();

private SimpleMoneyFormat() {
   numberFormat.setMaximumFractionDigits(4);
   numberFormat.setMinimumFractionDigits(2);
   numberFormat.setGroupingUsed(false);

   chineseNumberMap.put("0", ZERO);
   chineseNumberMap.put("1", ONE);
   chineseNumberMap.put("2", TWO);
   chineseNumberMap.put("3", THREE);
   chineseNumberMap.put("4", FOUR);
   chineseNumberMap.put("5", FIVE);
   chineseNumberMap.put("6", SIX);
   chineseNumberMap.put("7", SEVEN);
   chineseNumberMap.put("8", EIGHT);
   chineseNumberMap.put("9", NINE);
   chineseNumberMap.put(DOT, DOT);

   chineseMoneyPattern.put("1", TEN);
   chineseMoneyPattern.put("2", HUNDRED);
   chineseMoneyPattern.put("3", THOUSAND);
   chineseMoneyPattern.put("4", TEN_THOUSAND);
   chineseMoneyPattern.put("5", TEN);
   chineseMoneyPattern.put("6", HUNDRED);
   chineseMoneyPattern.put("7", THOUSAND);
   chineseMoneyPattern.put("8", HUNDRED_MILLION);
}

public synchronized static SimpleMoneyFormat getInstance() {
   if (formatter == null)
    formatter = new SimpleMoneyFormat();
   return formatter;
}

public String format(String moneyStr) {
   checkPrecision(moneyStr);
   String result;
   result = convertToChineseNumber(moneyStr);
   result = addUnitsToChineseMoneyString(result);
   return result;
}

public String format(double moneyDouble) {
   return format(numberFormat.format(moneyDouble));
}

public String format(int moneyInt) {
   return format(numberFormat.format(moneyInt));
}
  
public String format(long moneyLong) {
   return format(numberFormat.format(moneyLong));
}

public String format(Number moneyNum) {
   return format(numberFormat.format(moneyNum));
}

private String convertToChineseNumber(String moneyStr) {
   String result;
   StringBuffer cMoneyStringBuffer = new StringBuffer();
   for (int i = 0; i < moneyStr.length(); i++) {//123363
    cMoneyStringBuffer.append(chineseNumberMap.get(moneyStr.substring(
      i, i + 1))); 
   }
   // 拾佰仟万亿等都是汉字里面才有的单位，加上它们
   int indexOfDot = cMoneyStringBuffer.indexOf(DOT);
   int moneyPatternCursor = 1;
   for (int i = indexOfDot - 1; i > 0; i--) {
    cMoneyStringBuffer.insert(i, chineseMoneyPattern.get(EMPTY
      + moneyPatternCursor));
    moneyPatternCursor = moneyPatternCursor == 8 ? 1
      : moneyPatternCursor + 1;
   }

   String fractionPart = cMoneyStringBuffer.substring(cMoneyStringBuffer
     .indexOf("."));
   cMoneyStringBuffer.delete(cMoneyStringBuffer.indexOf("."),
     cMoneyStringBuffer.length());
   while (cMoneyStringBuffer.indexOf("零拾") != -1) {//inclusive. exclusive.
    cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零拾"),
      cMoneyStringBuffer.indexOf("零拾") + 2, ZERO);
   }
   while (cMoneyStringBuffer.indexOf("零佰") != -1) {
    cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零佰"),
      cMoneyStringBuffer.indexOf("零佰") + 2, ZERO);
   }
   while (cMoneyStringBuffer.indexOf("零仟") != -1) {
    cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零仟"),
      cMoneyStringBuffer.indexOf("零仟") + 2, ZERO);
   }
   while (cMoneyStringBuffer.indexOf("零万") != -1) {
    cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零万"),
      cMoneyStringBuffer.indexOf("零万") + 2, TEN_THOUSAND);
   }
   while (cMoneyStringBuffer.indexOf("零亿") != -1) {
    cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零亿"),
      cMoneyStringBuffer.indexOf("零亿") + 2, HUNDRED_MILLION);
   }
   while (cMoneyStringBuffer.indexOf("零零") != -1) {
    cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零零"),
      cMoneyStringBuffer.indexOf("零零") + 2, ZERO);
   }
   if (cMoneyStringBuffer.lastIndexOf(ZERO) == cMoneyStringBuffer.length() - 1)
    cMoneyStringBuffer.delete(cMoneyStringBuffer.length() - 1,
      cMoneyStringBuffer.length());
   cMoneyStringBuffer.append(fractionPart);

   result = cMoneyStringBuffer.toString();

   return result;
}

private String addUnitsToChineseMoneyString(String moneyStr) {
   String result;
   StringBuffer cMoneyStringBuffer = new StringBuffer(moneyStr);
   int indexOfDot = cMoneyStringBuffer.indexOf(DOT);
   cMoneyStringBuffer.replace(indexOfDot, indexOfDot + 1, YUAN);
   cMoneyStringBuffer.insert(cMoneyStringBuffer.length() - 1, JIAO);
   cMoneyStringBuffer.insert(cMoneyStringBuffer.length(), FEN);
   if (cMoneyStringBuffer.indexOf("零角零分") != -1)// 没有零头，加整
    cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零角零分"),
      cMoneyStringBuffer.length(), "整");
   else if (cMoneyStringBuffer.indexOf("零分") != -1)// 没有零分，加整
    cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零分"),
      cMoneyStringBuffer.length(), "整");
   else {
    if (cMoneyStringBuffer.indexOf("零角") != -1)
     cMoneyStringBuffer.delete(cMoneyStringBuffer.indexOf("零角"),
       cMoneyStringBuffer.indexOf("零角") + 2);
    // tmpBuffer.append("整");
   }
   result = cMoneyStringBuffer.toString();
   return result;
}

private void checkPrecision(String moneyStr) {//5336.53663   10-5-1
   int fractionDigits = moneyStr.length() - moneyStr.indexOf(DOT) - 1;
   if (fractionDigits > 2)
    throw new RuntimeException("金额" + moneyStr + "的小数位多于两位。"); // 精度不能比分低
}

public static void main(String[] args) {  
    System.out.println(getInstance().format(new Double(8951.11)));  
}
}