Cat.java

package src;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

public class Cat {
    public static void main(String[] args) {
        Scanner inputScanner = new Scanner(System.in);

        while (true) {
            System.out.print("파일 이름을 입력하세요 (예: 'catExample', 종료하려면 'exit'): ");
            String fileName = inputScanner.nextLine();

            if (fileName.equalsIgnoreCase("exit")) {
                System.out.println("프로그램을 종료합니다.");
                break;
            }

            File file = new File(fileName);

            if (!file.exists()) {
                System.out.println("파일이 존재하지 않습니다: " + fileName);
                continue;
            }

            try (Scanner fileScanner = new Scanner(file)) {
                while (fileScanner.hasNextLine()) {
                    System.out.println(fileScanner.nextLine());
                }
            } catch (FileNotFoundException e) {
                System.out.println("파일을 읽을 수 없습니다: " + fileName);
            }
        }

        //inputScanner.close();
    }
}