Todolist

• Application

public class Application {

	public static void main(String[] args) {
		new TodoApplication();
	}

}

• TodoApplication

import java.time.LocalDateTime;
import java.util.Scanner;

public class TodoApplication {
	Scanner in = new Scanner(System.in);
	TodoService todoService = new TodoService();
	
	public TodoApplication() {
	run();
	}
	
	public void run() {
		renderMenu();
		int selectedAction = chooseMenu();
		System.out.println(selectedAction);

		act(selectedAction);
	}

	private void act(int selectedAction) {

		switch (selectedAction) {
		case 1:
			renderAddingTodo();
			break;
		case 2:

			break;	
		case 3:

			break;
		default:
			System.out.println("망");
			break;
		}
	}

	private void renderAddingTodo() {
		
		System.out.println("1.할일을 추가해주세요");
		System.out.println("할일추가");
		String message = in.next();
		System.out.println(message);
		Todo todo = new Todo(message, LocalDateTime.now());
		todoService.addTodo(todo);
	}

	private int chooseMenu() {
		System.out.println("선택 >");
		return in.nextInt();
	}

	private void renderMenu() {
		System.out.println("1.할일 추가");
		System.out.println("2.할일 목록");
		System.out.println("3.할일 삭제");

	}
}

• Todo

import java.time.LocalDateTime;

public class Todo {
	
	private final String message;
	private final LocalDateTime writtenDate;
	
	public Todo(String message, LocalDateTime writtenDate) {
		this.message = message;
		this.writtenDate = writtenDate;
	}

}

• TodoService

public class TodoService {

	private TodoRepository repository = new InMemoryTodoRepository();

	public void addTodo(Todo todo) {
		repository.save(todo); 
	}

}

• InMemoryTodoRepository

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

public class InMemoryTodoRepository implements TodoRepository {

	List<Todo> list = new ArrayList<>();
	@Override
	public void save(Todo todo) {
		list.add(todo);
		
	}
}

• TodoRepository

public interface TodoRepository {

	void save(Todo todo);

}