public static String digitUppercase(double n){ String fraction[] = {"角", "分"}; String digit[] = { "零", "壹", "貳", "叁", "肆", "伍", "陸", "柒", "捌", "玖" }; String unit[][] = {{"元", "萬", "億"}, {"", "拾", "佰", "仟"}}; String head = n < 0? "負": ""; n = Math.abs(n); String s = ""; for (int i = 0; i < fraction.length; i++) { s += (digit[(int)(Math.floor(n * 10 * Math.pow(10, i)) % 10)] + fraction[i]).replaceAll("(零.)+", ""); } if(s.length()<1){ s = "整"; } int integerPart = (int)Math.floor(n); for (int i = 0; i < unit[0].length && integerPart > 0; i++) { String p =""; for (int j = 0; j < unit[1].length && n > 0; j++) { p = digit[integerPart%10]+unit[1][j] + p; integerPart = integerPart/10; } s = p.replaceAll("(零.)*零$", "").replaceAll("^$", "零") + unit[0][i] + s; } return head + s.replaceAll("(零.)*零元", "元").replaceFirst("(零.)+", "").replaceAll("(零.)+", "零").replaceAll("^整$", "零元整"); }