File operation

 import java.io.File;

import java.io.FileWriter;

import java.io.IOException;

import java.nio.file.Files;

import java.nio.file.Paths;

import java.util.Scanner;

public class FileOperations {

    

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        int choice;

        

        do {

            System.out.println("\nFile Operations Menu:");

            System.out.println("1. Create a File");

            System.out.println("2. Update a File");

            System.out.println("3. Delete a File");

            System.out.println("4. Exit");

            System.out.print("Enter your choice: ");

            choice = scanner.nextInt();

            scanner.nextLine(); // Consume newline

            switch (choice) {

                case 1:

                    createFile(scanner);

                    break;

                case 2:

                    updateFile(scanner);

                    break;

                case 3:

                    deleteFile(scanner);

                    break;

                case 4:

                    System.out.println("Exiting...");

                    break;

                default:

                    System.out.println("Invalid choice. Please try again.");

            }

        } while (choice != 4);

        

        scanner.close();

    }

    

    public static void createFile(Scanner scanner) {

        System.out.print("Enter the name of the file to create: ");

        String fileName = scanner.nextLine();

        

        File file = new File(fileName);

        try {

            if (file.createNewFile()) {

                System.out.println("File created: " + file.getName());

            } else {

                System.out.println("File already exists.");

            }

        } catch (IOException e) {

            System.out.println("An error occurred while creating the file.");

            e.printStackTrace();

        }

    }

    

    public static void updateFile(Scanner scanner) {

        System.out.print("Enter the name of the file to update: ");

        String fileName = scanner.nextLine();

        

        if (!Files.exists(Paths.get(fileName))) {

            System.out.println("File does not exist.");

            return;

        }

        

        System.out.print("Enter the content to append to the file: ");

        String content = scanner.nextLine();

        

        try (FileWriter fileWriter = new FileWriter(fileName, true)) {

            fileWriter.write(content + System.lineSeparator());

            System.out.println("Successfully updated the file.");

        } catch (IOException e) {

            System.out.println("An error occurred while updating the file.");

            e.printStackTrace();

        }

    }

    

    public static void deleteFile(Scanner scanner) {

        System.out.print("Enter the name of the file to delete: ");

        String fileName = scanner.nextLine();

        

        File file = new File(fileName);

        

        while (true) {

            System.out.print("Are you sure you want to delete the file? (yes/no): ");

            String response = scanner.nextLine();

            

            if (response.equalsIgnoreCase("yes")) {

                if (file.delete()) {

                    System.out.println("File deleted successfully.");

                } else {

                    System.out.println("Failed to delete the file.");

                }

                break;

            } else if (response.equalsIgnoreCase("no")) {

                System.out.println("File deletion canceled.");

                break;

            } else {

                System.out.println("Invalid response. Please enter 'yes' or 'no'.");

            }

        }

    }

}

OUTPUT :

File Operations Menu:

1. Create a File

2. Update a File

3. Delete a File

4. Exit

Enter your choice: 4

Exiting...