大小写

public class Test{
    public static void main(String[] args) {
        double number = 13500035.50;   
        System.out.println(toChineseCurrency(new Double(number)));   
    }
   
    public static String toChineseCurrency(Object o) {
        if(o instanceof Number) {
            String s = new DecimalFormat("#.00").format(o);
            System.out.println(s);
            s = s.replaceAll("\\.", "");       
            char[] digit = {'零', '壹', '贰', '叁', '肆',
                    '伍', '陆', '柒', '捌', '玖'};       
            String unit = "仟佰拾兆仟佰拾亿仟佰拾万仟佰拾元角分";
            int l = unit.length();
            StringBuffer sb = new StringBuffer(unit);
            for(int i=s.length()-1; i>=0; i--){
                sb = sb.insert(l-s.length()+i, digit[(s.charAt(i) - 0x30)]);
            }
            s = sb.substring(l-s.length(), l+s.length());
            System.out.println(s);
            s = s.replaceAll("零[拾佰仟]", "零").
                replaceAll("零{2,}", "零").
                replaceAll("零([兆万元])", "$1").
                replaceAll("零[角分]", "");
            return s;
        } else {
            throw new NumberFormatException();
        }

    }

public static void main(String[] args){
        String unit = "仟佰拾兆仟佰拾亿仟佰拾万仟佰拾元角分";
        String[] digit = {"零", "壹", "贰", "叁", "肆","伍", "陆", "柒", "捌", "玖"};   
        Double m = 13500035.50;
        if(m instanceof Number) {
            String moeny  = new DecimalFormat("#.00").format(m).replaceAll("\\.", "");
            System.out.println(moeny);
            StringBuffer sb = new StringBuffer();
            for(int i = 0; i < moeny.length(); i++){
                sb.append(digit[(moeny.charAt(i) - 0x30)]);
                sb.append(unit.charAt(unit.length() - digit.length+i));
            }
            String strs = sb.toString().replaceAll("零[拾佰仟]", "零").
            replaceAll("零{2,}", "零").
            replaceAll("零([兆万元])", "$1").
            replaceAll("零[角分]", "");
            System.out.println(strs);
        }
    }