JAVA 배열, Calendar, 주민등록번호 예제

*** 검색어: nabiro, java, Calendar, 주민등록번호

[출처] (주)프리렉, 열혈강의 JAVA Programming, 김승현 저
 

import java.io.*;
import java.util.*;

public class P221 {
	public static void main(String[] ar) throws IOException{
		BufferedReader in = new BufferedReader(
				new InputStreamReader(System.in));
		String name = "";
		int[] jumin = new int[14];
		boolean right = false;
		
		System.out.print("이름 = ");
		name = in.readLine();
		
		do{
			right = false;
			System.out.print("주민번호(ex.111111-1111111) = ");
			for(int i=0; i < jumin.length; i++){
				jumin[i] = System.in.read() - 48;
			}
			System.in.read();
			System.in.read();
			
			if(jumin[2]*10 + jumin[3] > 12) {
				System.out.println("태여난 달은 12월 보다 클 수 없습니다.");
				continue;
			}
			else if(jumin[4] * 10 + jumin[5] > 31)
			{
				System.out.println("태여난 일은 31일 보다 클 수 없습니다.");
				continue;
			}
			else if(jumin[7] != 9 && jumin[7] != 0 &&
					jumin[7] != 1 && jumin[7] != 2 &&
					jumin[7] != 3 && jumin[7] != 4){
				System.out.print("성별을 나타내는 숫자는");
				System.out.println("9, 0, 1, 2, 3, 4 중 하나여야 합니다."); 
				continue;
			}
			
			int hap = 0, cre = 2;
			float temp = 0.0f, temp1 = 0.0f;
			for(int i=0; i < jumin.length - 1; i++){
				if(i == 6){
					continue;
				}
				hap += jumin[i] * cre;
				cre++;
				if(cre == 10){
					cre = 2;
				}
			}
			
			temp = (int)(hap / 11.0f) * 11.0f + 11.0f - hap;
			temp1 = temp - (int)(temp / 10.0f) * 10.0f;
			if(temp1 != jumin[13]){
				System.out.println("주민번호 검증 수가 올바르지 않습니다.");
				continue;
			}
			
			right = true;
		} while(!right);
		
		System.out.println();
		System.out.println("이름 = " + name);
		System.out.print("주민번호 = ");
		
		for(int i = 0; i < jumin.length; i++){
			if(i == 6){
				System.out.print("-");
				continue;
			}
			System.out.print(jumin[i]);
		}
		
		System.out.println();
		System.out.print("생년월일 = ");
		int year = 0, month = 0, day = 0;
		
		switch(jumin[7]){
		case 9: case 0: year = 1800; break;
		case 1: case 2: year = 1900; break;
		case 3: case 4: year = 2000; break;
		}
		
		year += jumin[0] * 10 + jumin[1];
		month = jumin[2] * 10 + jumin[3];
		day = jumin[4] * 10 + jumin[5];
		
		System.out.println(year + "년" + month + "월" + day + "일");
		System.out.print("성별 = ");
		System.out.println(jumin[7] % 2 == 0 ? "여성" : "남성");
		System.out.print("태어난 시도 = ");
		String area = "";
		
		switch(jumin[8]) {
		case 0: area = "서울"; break;
		case 1: area = "경기, 인천"; break;
		case 2: area = "부산"; break;
		case 3: area = "강원도"; break;
		case 4: area = "충청도"; break;
		case 5: area = "전라도"; break;
		case 6: area = "대구, 광주"; break;
		case 7: area = "경북, 경남"; break;
		case 8: area = "경남"; break;
		case 9: area = "제주도"; break;		
		}
		
		System.out.println(area);
		System.out.print("나이 = ");
		Calendar ca = Calendar.getInstance();
		int age = ca.get(Calendar.YEAR)- year + 1;
		System.out.print(age);
		System.out.println("세");
	}
}