게시판 만들기 (콘솔)

Post.java

public class Post {
	
	private int index;
	private String title;
	private String author;
	private String paragraph;
	private String date;

	public int getIndex() {
		return index;
	}

	public void setIndex(int index) {
		this.index = index;
	}

	public String getTitle() {
		return title;
	}

	public void setTitle(String title) {
		this.title = title;
	}

	public String getAuthor() {
		return author;
	}

	public void setAuthor(String author) {
		this.author = author;
	}

	public String getParagraph() {
		return paragraph;
	}

	public void setParagraph(String paragraph) {
		this.paragraph = paragraph;
	}

	public String getDate() {
		return date;
	}

	public void setDate(String date) {
		this.date = date;
	}

}

Board.java

package Board;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Scanner;

public class Board {

	Scanner scan = new Scanner(System.in);
	List<Post> list = new ArrayList<>();

	public void showMenu() {
		System.out.println("1 목록 보기 2 글 등록 3 내용 보기 4 글 삭제 0 종료 >> ");
	}

	public void showList() {
		System.out.println("=================================");
		System.out.println("번호" + "\t" + "제목" + "\t" + "작성자" + "\t" + "작성일");

		for (Post p : list) {
			System.out.println((list.indexOf(p) + 1) + "\t" + p.getTitle() + "\t" + p.getAuthor() + "\t" + p.getDate());
		}

		System.out.println("---------------------------------");
	} // end of showList (1번 목록 보기)

	public void addList(String title, String author, String contents) {
		Post post = new Post();
		
		post.setIndex(list.indexOf(post));
		post.setTitle(title);
		post.setAuthor(author);
		post.setParagraph(contents);

		SimpleDateFormat sdf = new SimpleDateFormat("MMM dd, yyyy, hh:mm aaa");
		String date = sdf.format(new Date());
		post.setDate(date);

		list.add(post);
		System.out.println("글이 추가되었습니다.");

	} // end of addList (2번 글 등록하기)

	public void searchList(int num) {
		if (num <= 0 || num > list.size()) {
			System.out.println("해당하는 번호에 대한 글이 없습니다.");
			return;
		}

		Post search = list.get(num - 1);
		System.out.println("=================================");
		System.out.println(num + "\t" + search.getTitle() + "\t" + search.getAuthor() + "\t" + search.getDate());
		System.out.println("---------------------------------");
		System.out.println(search.getParagraph());

	} // end of searchList (3번 내용 보기)

	public void delList(int num) {
		if (num <= 0 || num > list.size()) {
			System.out.println("해당하는 번호에 대한 글이 없습니다.");
			return;
		}
		Post del = list.get(num - 1);
		list.remove(list.indexOf(del));
		System.out.println(num + "번 글이 삭제되었습니다.");

	} // end of delList (4번 글 삭제하기)

}

ProjectMain.java

package Board;

import java.util.Scanner;

public class ProjectMain {

	public static void main(String[] args) {
		Board b = new Board();
		Scanner scan = new Scanner(System.in);
		int count = 0;

		try {
			while (true) {
				b.showMenu();

				int num = scan.nextInt();

				if (num == 0) {
					System.out.println("종료합니다.");
					break;
				} else if (num == 1) {
					if (count <= 0) {
						System.out.println("등록된 글이 없습니다.");
					} else {
						b.showList();
					}
				} else if (num == 2) {
					scan.nextLine();
					System.out.print("제목 >> ");
					String title = scan.nextLine();
					System.out.print("작성자 >> ");
					String author = scan.nextLine();
					System.out.print("내용 >> ");
					String contents = scan.nextLine();
					b.addList(title, author, contents);
					count++;
				} else if (num == 3) {
					if (count <= 0) {
						System.out.println("등록된 글이 없습니다.");
					} else {
						System.out.print("내용을 볼 글 번호 >> ");
						int searchNum = scan.nextInt();
						b.searchList(searchNum);
					}
				} else if (num == 4) {
					if (count <= 0) {
						System.out.println("등록된 글이 없습니다.");
					} else {
						System.out.print("삭제할 글 번호 >> ");
						int delNum = scan.nextInt();
						b.delList(delNum);
						count--;
					}
				}

			}

		} catch (Exception e) {
			e.printStackTrace();
		}
	}

}