转：java实现 阿拉伯数字转换为汉字数字 算法

转载链接：http://blog.csdn.net/zhanghao_hulk/article/details/28594105

转载代码：

public class NumberFormatUtil {

	static String[] units = {"","十","百","千","万","十万","百万","千万","亿","十亿","百亿","千亿","万亿" };
	static char[] numArray = {'零','一','二','三','四','五','六','七','八','九'};

	//将整数转换成汉字数字
	public static String formatInteger(int num) {
		char[] val = String.valueOf(num).toCharArray();
		int len = val.length;
		StringBuilder sb = new StringBuilder();
		for (int i = 0; i < len; i++) {
			String m = val[i] + "";
			int n = Integer.valueOf(m);
			boolean isZero = n == 0;
			String unit = units[(len - 1) - i];
			if (isZero) {
				if ('0' == val[i - 1]) {
					continue;
				} else {
					sb.append(numArray[n]);
				}
			} else {
				sb.append(numArray[n]);
				sb.append(unit);
			}
		}
		return sb.toString();
	}
	//将小数转换成汉字数字
	public static String formatDecimal(double decimal) {
		String decimals = String.valueOf(decimal);
		int decIndex = decimals.indexOf(".");
		int integ = Integer.valueOf(decimals.substring(0, decIndex));
		int dec = Integer.valueOf(decimals.substring(decIndex + 1));
		String result = formatInteger(integ) + "." + formatFractionalPart(dec);
		return result;
	}
	
	//格式化小数部分的数字
	public static String formatFractionalPart(int decimal) {
		char[] val = String.valueOf(decimal).toCharArray();
		int len = val.length;
		StringBuilder sb = new StringBuilder();
		for (int i = 0; i < len; i++) {
			int n = Integer.valueOf(val[i] + "");
			sb.append(numArray[n]);
		}
		return sb.toString();
	}

	private static void print(Object arg0) {
		System.out.println(arg0);
	}
	
	public static void main(String[] args) {
		int num = 245000006;
		String numStr = formatInteger(num);
		print("num= " + num + ", convert result: " + numStr);
		double decimal = 245006.234206;
		print("============================================================");
		String decStr = formatDecimal(decimal);
		print("decimal= " + decimal + ", decStr: " + decStr);
	}
}