import java.text.*;
public class ChineseCurrency{
    public static void main(String[] args) {
        double number = 100035.53;    
        System.out.println(toChineseCurrency(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();
            StringBuilder sb = new StringBuilder(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());
            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();
        }
    }
}

------解决方案--------------------
照楼主帖子的意思，也写了完整的一个，供大家参考

import java.util.HashMap;

public class NumberToChinese {
    
	public static void main(String[] args)
	{
		StringBuffer numberToCn = new StringBuffer();
		
		String number = "-2813040410.0787003560";
		
		HashMap cnHash = getCNHash();
		
		HashMap unitHash = getUnitHash();
		
		String[] partOfNumber = null;
		
		if(number.substring(0, 1).equals("-")) //判断数字是否为负数，并将数划分为小数、整数两部分
		{
			numberToCn.append("負");
			partOfNumber = number.substring(1).split("\\.");
		}
		else
			partOfNumber = number.substring(0).split("\\.");
		
		
		if(partOfNumber.length == 1) //如果输入的数没有小数则只进行整数部分转化
		{
		   	String str = PositiveChangeToCN(partOfNumber[0],cnHash,unitHash);