数字转换成汉字大写

public class Num2Rmb {
	private String[] hanArr={"零","壹","贰","叁","肆","伍","陆","柒","捌","玖"};
	private String[] unitArr={"拾","佰","仟","万","拾","佰","仟","亿","拾","佰","仟"};

	private String toHanStr(String numStr)
	{
		String result="";
		int numLen=numStr.length();
		for (int i=0;i<numLen; i++)
		{
			int num=numStr.charAt(i)-48;
			if(i!=numLen-1 && num!=0)
			{
				result+=hanArr[num]+unitArr[numLen-2-i];
			}
			else
			{
				result+=hanArr[num];
			}
		}
		return result;
	}
	public static void main(String[] args)
	{
		Num2Rmb nr = new Num2Rmb();
		
		System.out.println(nr.toHanStr("633779433451"));
	}
}