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/* | |
김정훈 | |
2023-06-02 | 주민등록번호 생성 프로그램 | |
*/ | |
import java.util.Random; | |
import java.util.Scanner; | |
public class JavaStudy04 { | |
public static void main(String[] args) { | |
System.out.println("[주민등록번호 계산]"); | |
String nationalIdentifyNumber = ""; | |
Random random = new Random(); | |
StringBuilder sb = new StringBuilder(); | |
System.out.print("출생년도를 입력해 주세요.(yyyy):"); | |
Scanner sc = new Scanner(System.in); | |
String birthYear = sc.next(); | |
if(!birthYear.matches("[0-9]+")) return; | |
if (Integer.parseInt(birthYear) < 2020 || birthYear.length() > 4) { | |
return; | |
} | |
sb.append(birthYear.substring(2,4)); | |
System.out.print("출생월을 입력해 주세요.(mm):"); | |
sc = new Scanner(System.in); | |
String birthMonth = sc.next(); | |
if(!birthMonth.matches("[0-9]+")) return; | |
if(Integer.parseInt(birthMonth) > 12 || Integer.parseInt(birthMonth) < 1) { | |
return; | |
} | |
String strMonth = (birthMonth.length()==1) ? String.format("%02d", birthMonth) : birthMonth; | |
sb.append(strMonth); | |
System.out.print("출생일을 입력해 주세요.(dd):"); | |
sc = new Scanner(System.in); | |
String birthDay = sc.next(); | |
if(!birthDay.matches("[0-9]+")) { | |
return; | |
} | |
if(Integer.parseInt(birthDay) > 31 || Integer.parseInt(birthDay) < 1) { | |
return; | |
} | |
String strDay = (birthDay.length()==1) ? String.format("%02d", birthDay) : birthDay; | |
sb.append(strDay); | |
sb.append("-"); | |
System.out.print("성별을 입력해 주세요.(m/f):"); | |
sc = new Scanner(System.in); | |
String strSex = sc.next().toLowerCase(); | |
if (strSex.length() != 1 || (!strSex.contains("m") && !strSex.contains("f"))) { | |
return; | |
} | |
int sex = (strSex.equals("f")) ? 4 : 3; | |
sb.append(sex); | |
sb.append(String.format("%06d", random.nextInt(1, 999999))); | |
nationalIdentifyNumber = new String(sb); | |
System.out.println(nationalIdentifyNumber); //nationalIdentifyNumber; | |
} | |
} |
Author
youngvctr
commented
Jun 2, 2023
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