java小写数字转大写

public static String convertToUpperCase(int num) {

String[] upperCaseDigit = {"零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"};

String[] unit = {"", "拾", "佰", "仟", "万", "拾", "佰", "仟", "亿"};

String strNum = String.valueOf(num);

StringBuilder result = new StringBuilder();

int len = strNum.length();

for (int i = 0; i < len; i++) {

int digit = Character.getNumericValue(strNum.charAt(i));

result.append(upperCaseDigit[digit]).append(unit[len - i - 1]);

}

return result.toString();

}