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| //노재경 | |
| import java.time.LocalDate; | |
| import java.util.InputMismatchException; | |
| import java.util.Scanner; | |
| public class Main { | |
| public static void main(String[] args) { | |
| int year = getInput("달력의 년도를 입력해 주세요.(yyyy): ", 0, Integer.MAX_VALUE); | |
| int month = getInput("달력의 월을 입력해 주세요.(mm): ", 1, 12); | |
| System.out.println("\n[달력 출력 프로그램]"); | |
| printCalendar(year, month - 1); // 이전 달 | |
| printCalendar(year, month); // 현재 달 | |
| printCalendar(year, month + 1); // 다음 달 | |
| } | |
| public static int getInput(String prompt, int min, int max) { | |
| Scanner scanner = new Scanner(System.in); | |
| int value = -1; | |
| while (true) { | |
| try { | |
| System.out.print(prompt); | |
| value = scanner.nextInt(); | |
| if (value < min || value > max) { | |
| System.out.printf("입력 값은 %d에서 %d 사이의 값이어야 합니다.\n", min, max); | |
| } else { | |
| break; | |
| } | |
| } catch (InputMismatchException e) { | |
| System.out.println("숫자를 입력해 주세요."); | |
| scanner.next(); // 잘못된 입력 제거용 | |
| } | |
| } | |
| return value; | |
| } | |
| public static void printCalendar(int year, int month) { | |
| // 월과 연도를 조정 (1월 전후 및 12월 전후 처리) | |
| if (month < 1) { | |
| year -= 1; | |
| month = 12; | |
| } else if (month > 12) { | |
| year += 1; | |
| month = 1; | |
| } | |
| LocalDate firstDate = LocalDate.of(year, month, 1); | |
| int daysInMonth = firstDate.lengthOfMonth(); | |
| int startDayOfWeek = firstDate.getDayOfWeek().getValue(); | |
| System.out.printf("\n[%d년 %02d월]\n", year, month); | |
| System.out.println("일\t월\t화\t수\t목\t금\t토"); | |
| // 첫 주 공백 출력 | |
| for (int i = 0; i < startDayOfWeek % 7; i++) { | |
| System.out.print("\t"); | |
| } | |
| // 날짜 출력 | |
| for (int date = 1; date <= daysInMonth; date++) { | |
| System.out.printf("%02d\t", date); | |
| if ((startDayOfWeek + date - 1) % 7 == 6) { //토 | |
| System.out.println(); | |
| } | |
| } | |
| System.out.println(); | |
| } | |
| } |
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//노재경
import java.time.LocalDate;
import java.util.InputMismatchException;
import java.util.Scanner;
public class Main {
}