数字转变成大写例子

package com.csdn.exam.tenth;import java.util.StringTokenizer;/** * * @author tianzhw * 这个问题，是我今年在深圳面试的时候，一家国有电力公司的面试最后一题。当时，有那么一点思路 * 后来在网上找寻出来的的答案。 * */public class NumberFormate {private String num;private String prefix;private String suffix;private static String STR = "0123456789.";public NumberFormate(String number) {num = number;// 字符合法性判断if (NumberFormate.isAllRight(num)) {spit(num);} else {System.out.println("非法数据！");}}public String Convert() {String temp = "圆";int count = 0;// 整数部分转换for (int i = prefix.length() - 1; i >= 0; i--) {count++;int j = Integer.parseInt(prefix.charAt(i) + ""); // 当前数字if (j == 0) {if (!temp.startsWith("零") && count > 1) {temp = "零" + temp;}// 万位、亿位上为零，需要添加单位if ((count - 1) > 0 && (count - 1) % 4 == 0) {if ((count - 1) % 8 == 0)temp = "亿" + temp;elsetemp = "万" + temp;}} else {// 添加计量单位if (count % 2 == 0 && count % 4 != 0)temp = "拾" + temp;else if ((count + 1) % 4 == 0)temp = "佰" + temp;else if (count % 4 == 0)temp = "仟" + temp;else if ((count - 1) > 0 && (count - 1) % 4 == 0&& (count - 1) % 8 != 0)temp = "万" + temp;else if ((count - 1) > 0 && (count - 1) % 8 == 0)temp = "亿" + temp;} // 数字转大写temp = NumberFormate.numTochn(j) + temp;}//判断是否存在小数部分if(null!=suffix){// 小数部分转换if (suffix.length() > 3) {System.out.println("超过三位后的小数忽略！");suffix.substring(0, 3);}for (int i = 0; i < suffix.length(); i++) {int k = Integer.parseInt(suffix.charAt(i) + "");if (k != 0) {temp += NumberFormate.numTochn(k);if (i == 0)temp += "分";else if (i == 1)temp += "毫";else if (i == 2)temp += "厘";}}}// 正负数if (prefix.startsWith("-"))temp = "负" + temp;return temp;}/** * @function 整数部分、小数部分初始化 */private void spit(String num) {StringTokenizer st = new StringTokenizer(num, ".");if (st.countTokens() == 1)prefix = st.nextToken();else if (st.countTokens() == 2) {prefix = st.nextToken();suffix = st.nextToken();}}/** * @function 判断数据是否合法 */public static boolean isAllRight(String num) {boolean flag = true;int i; // 正负数int count = 0; // 计算小数点个数// 不为空if (num != null && !num.equals("")) {// 正负数if (num.startsWith("-"))i = 1;elsei = 0;for (; i < num.length() - 1; i++) {if (STR.indexOf(num.charAt(i)) == -1) {flag = false;break;}if ((num.charAt(i) + "").equals("."))count++;}// 小数点后没数据if (num.endsWith("."))flag = false;// 不止一個小數點if (count > 1)flag = false;}return flag;}/** * @function 小写转大写 */public static String numTochn(int i) {String temp = "";switch (i) {case 0:temp = "";break;case 1:temp = "壹";break;case 2:temp = "贰";break;case 3:temp = "叁";break;case 4:temp = "肆";break;case 5:temp = "伍";break;case 6:temp = "陆";break;case 7:temp = "柒";break;case 8:temp = "捌";break;case 9:temp = "玖";break;default:break;}return temp;}public static void main(String[] args) {String s = "0.124679";NumberFormate nf = new NumberFormate(s);System.out.println("整数：" + nf.prefix);System.out.println("小数：" + nf.suffix);System.out.println(nf.Convert());}}