숫자형식 포멧 방법

//휴대폰

public static String makePhoneNumber(String Number) {

String regEx = "(\\d{3})(\\d{3,4})(\\d{4})";

if(!Pattern.matches(regEx, Number)) return null;

return Number.replaceAll(regEx, "$1-$2-$3");

}

//사업자번호

public static String makeNumber(String Number) {

String regEx = "(\\d{3})(\\d{2})(\\d{5})";

if(!Pattern.matches(regEx, Number)) return null;

return Number.replaceAll(regEx, "$1-$2-$3");

}

//법인번호

public static String makeNumber(String Number) {

String regEx = "(\\d{6})(\\d{7})";

if(!Pattern.matches(regEx, Number)) return null;

return Number.replaceAll(regEx, "$1-$2");

}