File operation program

 import java.io.*;

import java.util.Scanner;

public class FileOperations {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        String fileName = "example.txt";

        int choice;

        do {

            System.out.println("Choose an action: ");

            System.out.println("1. Read");

            System.out.println("2. Write");

            System.out.println("3. Update");

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

            System.out.println("5. Exit");

            choice = scanner.nextInt();

            scanner.nextLine(); // Consume newline

            switch (choice) {

                case 1:

                    readFile(fileName);

                    break;

                case 2:

                    System.out.print("Enter text to write: ");

                    String textToWrite = scanner.nextLine();

                    writeFile(fileName, textToWrite);

                    break;

                case 3:

                    System.out.print("Enter new text: ");

                    String newText = scanner.nextLine();

                    updateFile(fileName, newText);

                    break;

                case 4:

                    deleteFile(fileName);

                    break;

                case 5:

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

                    break;

                default:

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

            }

        } while (choice != 5);

        

        scanner.close();

    }

    private static void readFile(String fileName) {

        try (BufferedReader br = new BufferedReader(new FileReader(fileName))) {

            String line;

            while ((line = br.readLine()) != null) {

                System.out.println(line);

            }

        } catch (IOException e) {

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

        }

    }

    private static void writeFile(String fileName, String text) {

        try (BufferedWriter bw = new BufferedWriter(new FileWriter(fileName))) {

            bw.write(text);

            System.out.println("Text written to file successfully.");

        } catch (IOException e) {

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

        }

    }

    private static void updateFile(String fileName, String newText) {

        try {

            FileWriter fw = new FileWriter(fileName, false);

            fw.write(newText);

            fw.close();

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

        } catch (IOException e) {

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

        }

    }

    private static void deleteFile(String fileName) {

        File file = new File(fileName);

        if (file.delete()) {

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

        } else {

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

        }

    }

}