ggg

main

package org.example;

import java.util.Scanner;

public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
new App(sc).run();
sc.close();
}
}

app

package org.example;

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class App {
private final Scanner sc;
// public App 과 public void setApp 과 같은 의미
public App(Scanner sc){
this.sc = sc;
}

public void run() {
    System.out.println("== 명언 앱 ==");

    long a = 0;

    List<WiseSaying> wiseSayings = new ArrayList<>();
    //wiseSayings에 배열을 선언

    while (true) {
        System.out.print("명령) ");
        String command = sc.nextLine().trim();
        if (command.equals("종료")) {
            break;
        } else if (command.equals("등록")) {
            long id = a+1;

            System.out.print("명언 : ");
            String content = sc.nextLine().trim();
            System.out.print("작가 : ");
            String author = sc.nextLine().trim();
            System.out.printf("%d번 명언이 등록되었습니다.\n", id);

            WiseSaying wiseSaying = new WiseSaying(id, author, content);
            wiseSayings.add(wiseSaying);

            a++;
        } else if (command.equals("목록")) {
            System.out.println("번호 / 작가 / 명언");
            System.out.println("-----------------");
            for (int i = wiseSayings.size() - 1; i >= 0; i--){
                WiseSaying wiseSaying = wiseSayings.get(i);
                System.out.printf("%d, %s, %s\n", wiseSaying.getId(), wiseSaying.getAuthor(), wiseSaying.getContent());
            }
        }
    }
}

}

wisesaying

package org.example;

public class WiseSaying {
private long id;
private String author;
private String content;

WiseSaying(long id, String author, String content){
    this.id = id;
    this.author = author;
    this.content = content;

}
public long getId() {
    return this.id;
}

public String getAuthor() {
    return this.author;
}

public String getContent() {
    return this.content;
}

}