阿拉伯数字金额转换为大写

import java.math.BigDecimal;

public class NumberToCN {
	private static final String[] CN_UPPER_NUMBER = { "零", "壹", "贰", "叁", "肆",
            "伍", "陆", "柒", "捌", "玖" };
	private static final String[] CN_UPPER_MONETRAY_UNIT = { "分", "角", "元",
	             "拾", "佰", "仟", "万", "拾", "佰", "仟", "亿", "拾", "佰", "仟", "兆", "拾",
	             "佰", "仟" };
	private static final String CN_FULL = "整";
	private static final String CN_NEGATIVE = "负";
	private static final int MONEY_PRECISION = 2;
	private static final String CN_ZEOR_FULL = "零元" + CN_FULL;
	
	public static String number2CNMontrayUnit(BigDecimal numberOfMoney) {
		StringBuffer sb = new StringBuffer();
		int signum = numberOfMoney.signum();
		if (signum == 0) {
			return CN_ZEOR_FULL;
		}
		long number = numberOfMoney.movePointRight(MONEY_PRECISION)
				.setScale(0, 4).abs().longValue();
		long scale = number % 100;
		int numUnit = 0;
		int numIndex = 0;
		boolean getZero = false;
		if (!(scale > 0)) {
			numIndex = 2;
			number = number / 100;
			getZero = true;
			
		}
		if ((scale > 0) && (!(scale % 10 > 0))) {
			numIndex = 1;
			number = number / 10;
			getZero = true;
			
		}
		int zeroSize = 0;
		while (true) {
			if (number <= 0) {
				break;
			}
		
		numUnit = (int) (number % 10);
		if (numUnit > 0) {
			if ((numIndex == 9) && (zeroSize >= 3)) {
				sb.insert(0, CN_UPPER_MONETRAY_UNIT[6]);
			}
			if ((numIndex == 13) && (zeroSize >= 3)) {
				sb.insert(0, CN_UPPER_MONETRAY_UNIT[10]);
			}
			sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);
			sb.insert(0, CN_UPPER_NUMBER[numUnit]);
			getZero = false;
			zeroSize = 0;
		} else {
			++zeroSize;
			if (!(getZero)) {
				sb.insert(0, CN_UPPER_NUMBER[numUnit]);
			}
			if (numIndex == 2) {
				if (number > 0) {
					sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);
				}
			}else if (((numIndex - 2) % 4 == 0) && (number % 1000 > 0)) {
				sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);
			}
			getZero = true;
		}
		number = number / 10;
		++numIndex;
		}
		if (signum == -1) {
			sb.insert(0, CN_NEGATIVE);
		}
		if (!(scale > 0)) {
			sb.append(CN_FULL);
		}
		return sb.toString();
	}
}