java 金额转大写

public static String convertToChineseNumber(double number)
{
StringBuffer chineseNumber = new StringBuffer();
String [] num={"零","壹","贰","叁","肆","伍","陆","柒","捌","玖"};
String [] unit = {"分","角","圆","拾","佰","仟","万","拾","佰","仟","亿","拾","佰","仟","万"};
String tempNumber = String.valueOf(Math.round((number * 100)));
int tempNumberLength = tempNumber.length();
if ("0".equals(tempNumber))
{
return "零圆整";
}
if (tempNumberLength > 15)
{

}
boolean preReadZero = true; //前面的字符是否读零
for (int i=tempNumberLength; i>0; i--)
{
if ((tempNumberLength - i + 2) % 4 == 0)
{
//如果在（圆，万，亿，万）位上的四个数都为零,如果标志为未读零，则只读零，如果标志为已读零，则略过这四位
if (i - 4 >= 0 && "0000".equals(tempNumber.substring(i - 4, i)))
{
if (!preReadZero)
{
chineseNumber.insert(0, "零");
preReadZero = true;
}
i -= 3; //下面还有一个i--
continue;
}
//如果当前位在（圆，万，亿，万）位上，则设置标志为已读零（即重置读零标志）
preReadZero = true;
}
Integer digit = Integer.parseInt(tempNumber.substring(i - 1, i));
if (digit == 0)
{
//如果当前位是零并且标志为未读零，则读零，并设置标志为已读零
if (!preReadZero)
{
chineseNumber.insert(0, "零");
preReadZero = true;
}
//如果当前位是零并且在（圆，万，亿，万）位上，则读出（圆，万，亿，万）
if ((tempNumberLength - i + 2) % 4 == 0)
{
chineseNumber.insert(0, unit[tempNumberLength - i]);
}
}
//如果当前位不为零，则读出此位，并且设置标志为未读零
else
{
chineseNumber.insert(0, num[digit] + unit[tempNumberLength - i]);
preReadZero = false;
}
}
//如果分角两位上的值都为零，则添加一个“整”字
if (tempNumberLength - 2 >= 0 && "00".equals(tempNumber.substring(tempNumberLength - 2, tempNumberLength)))
{
chineseNumber.append("整");
}
return chineseNumber.toString();
}