NotesApp.java

import java.io.*;
import java.util.Scanner;
public class NotesApp {
private static final String FILE_NAME = "notes.txt";
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
 System.out.println("Welcome to Notes App!");
 while (true) {
  System.out.println("\nChoose an option:");
  System.out.println("1. Write a note");
  System.out.println("2. Read notes");
  System.out.println("3. Exit");
  System.out.print("Your choice: ");
 int choice = scanner.nextInt();
scanner.nextLine(); // consume newline
switch (choice) {
case 1:
writeNote(scanner);
break;
case 2:
readNotes();
break;
case 3:
System.out.println("Goodbye!");
return;
default:
System.out.println("Invalid choice. Try again.");
}
}
}
private static void writeNote(Scanner scanner) {
System.out.print("Enter your note: ");
String note = scanner.nextLine();
try (FileWriter writer = new FileWriter(FILE_NAME, true)) {
writer.write(note + System.lineSeparator());
System.out.println("Note saved.");
} catch (IOException e) {
System.out.println("Error writing to file: " + e.getMessage());
}
}
private static void readNotes() {
System.out.println("\nYour Notes:");
try (BufferedReader reader = new BufferedReader(new FileReader(FILE_NAME))) {
String line;
while ((line = reader.readLine()) != null) {
System.out.println("- " + line);
}
} catch (FileNotFoundException e) {
System.out.println("No notes found. Start by writing one!");
} catch (IOException e) {
System.out.println("Error reading file: " + e.getMessage());
}
}
}