本文主要是介绍金额数字转换（小写转大写），希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
人民币金额，小写转大写。代码如下：
public String convert(String money) {String[] numberCNN = {"零","壹","贰","叁","肆","伍","陆","柒","捌","玖"};String[] subMonetCN = {"","拾","佰","仟"};String formatCN = "";int point = money.indexOf(".");if(point!=-1) {String money1 = money.substring(0, point); //小数点前的整数部分String money1_1 = (new StringBuffer(money1).reverse()).toString(); //反转String money2 = money.substring(point+1); //小数点后的小数部分//判断小数点前后是不是数字if(!StringUtils.isNumeric(money1)||!StringUtils.isNumeric(money2)) {formatCN = "输入内容必须是数字，请重新输入";System.out.println(formatCN);return formatCN;}if(money2.length()<2) {if(money2.length() == 0) {money2 = "00";}else {money2 = money2 + "0";}}else {//如果小数点后面的位数大于两位，则只取前两位money2 = money.substring(point+1, point+3);}int len = money1_1.length(); //字符串反转之后，小数点之前的位数int pos = len - 1;String single = "";boolean allHaveNum = false;boolean haveNum = false;boolean mark = false;//输入的数字不能超过15位if(len>=16) {formatCN = "您输入的位数过大(整数部分不能超过15位)，请重新输入";return formatCN;}while(pos>=0) {single = money1_1.substring(pos,pos+1);//if(pos>=8&&pos<12) {if(pos>=8) {if(!"0".equals(single)) {if(!mark) {formatCN = formatCN + numberCNN[Integer.parseInt(single)] + subMonetCN[pos%4];}else {if(allHaveNum) {formatCN = formatCN + "零";}formatCN = formatCN + numberCNN[Integer.parseInt(single)] + subMonetCN[pos%4];mark = false;}haveNum = true;allHaveNum = true;}else {mark = true;}if(pos%4==0&&pos!=8&&haveNum) {formatCN = formatCN + "万";}if(pos==8&&haveNum) {formatCN = formatCN + "亿";haveNum = false;}}if(pos>=4&&pos<8) {if(!"0".equals(single)) {if(!mark) {formatCN = formatCN + numberCNN[Integer.parseInt(single)] + subMonetCN[pos%4];}else {if(allHaveNum) {formatCN = formatCN + "零";}formatCN = formatCN + numberCNN[Integer.parseInt(single)] + subMonetCN[pos%4]; mark = false;}haveNum = true;allHaveNum = true;}else {mark = true;}if(pos%4==0&&haveNum) {formatCN = formatCN + "万";haveNum = false;}}if(pos>=0&&pos<4) {if(!"0".equals(single)) {if(!mark) {formatCN = formatCN + numberCNN[Integer.parseInt(single)] + subMonetCN[pos%4]; }else {if(allHaveNum) {formatCN = formatCN + "零";}formatCN = formatCN + numberCNN[Integer.parseInt(single)] + subMonetCN[pos%4]; mark = false;}haveNum = true;allHaveNum = true;}else {mark = true;}}pos--;}if(allHaveNum) {formatCN = formatCN + "元";}else {formatCN = formatCN + "零元";}if("00".equals(money2)) {formatCN = formatCN + "整";}else {if(money2.startsWith("0")||(allHaveNum&&money1.startsWith("0"))) {formatCN = formatCN + "零";}if(!money2.startsWith("0")) {formatCN = formatCN + numberCNN[Integer.parseInt(money2.substring(0,1))] + "角";}formatCN = formatCN + numberCNN[Integer.parseInt(money2.substring(1))] + "分";}}else {formatCN = "您输入的格式不正确，格式为：888.00";}return formatCN;
}
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