如何把阿拉伯数字转换为中文大写？

public class Chinese
{
public String returnResult(long num)
{
String numStr = String.valueOf(num);
// 主要理念是把数字字符串最终分隔为四个一组四个一组的，不足的不管。
if (numStr.length() > 8 & numStr.length() < 16)
{
// 定义一个数组，存储整个字条串分隔后的字符串。然后两次递归调用。
// 调用完全后，得到总的大写字符串。
String[] firstSplit = new String[2];
firstSplit[0] = numStr.substring(0, numStr.length() - 8);
firstSplit[1] = numStr.substring(numStr.length() - 8);
String result1 = getString(firstSplit[0]) + "億";
String result2 = getString(firstSplit[1]);
return result1 + result2;
} else
{
return getString(numStr);
}
}

// 进行一次递归调用，得到两组四位数字的大字字串
public String getString(String str)
{
if (str.length() > 4)
{
String[] secondSplit = new String[2];
secondSplit[0] = str.substring(0, str.length() - 4);
secondSplit[1] = str.substring(str.length() - 4);
String result1 = getRe(secondSplit[0]);
String result2 = getRe(secondSplit[1]);
// 确定是否加“万”字
if (!secondSplit[0].equals("0000"))
{
result1 += "萬";
}
return result1 + result2;
} else
{
return getRe(str);
}
}

int[] value = { 1000, 100, 10 };

// 将四位数以内的字符串返回为正确的大写称呼 比如1234 返回：一千二百三十四
public String getRe(String doWith)
{
char[] number = doWith.toCharArray();
int length = number.length;
String re = "";
for (int i = 0; i < length; i++)
{
switch (number[i])
{
case '0':
if (re.endsWith("零"))
{
re += "";
} else
{
re += "零";
}
break;
case '1':
re += "壹";
break;
case '2':
re += "贰";
break;
case '3':
re += "叁";
break;
case '4':
re += "肆";
break;
case '5':
re += "伍";
break;
case '6':
re += "陆";
break;
case '7':
re += "柒";
break;
case '8':
re += "捌";
break;
case '9':
re += "玖";
break;
}
int index = (int) Math.pow(10, length - i - 1);
if ("0".equals(String.valueOf(number[i])))
{
index = -1;
}
switch (index)
{
case 1000:
re += "仟";
break;
case 100:
re += "佰";
break;
case 10:
re += "拾";
break;
}
}
if (re.endsWith("零"))
{
re = re.substring(0, re.length() - 1);
}
return re;
}
public static void main(String[] args)
{
Chinese ch = new Chinese();
long ll = 100000001L;
System.out.println(ch.returnResult(ll));
}
}

public String getRe(String doWith)
{
String[] dight = {"零", "一", "二", "三", "四", "五", "六", "七", "八", "九"};
String[] rate = {"", "十", "百", "千"};
int length = doWith.length();
int dow = Integer.parseInt(doWith);
String re = "";
for(int i=0; i<length; i++)
{

int index = (int) Math.pow(10, length - i -1);
int bit = dow / index;
if(bit == 0)
{
if (re.endsWith("零"))
{
re += "";
}
else
re += dight[bit];
}

else
re += dight[bit] + rate[String.valueOf(index).length() - 1];
dow = dow % index;
}
if (re.endsWith("零"))
{
re = re.substring(0, re.length() - 1);
}
return re;
}