NotesApp.java
· 2.7 KiB · Java
Sin formato
import java.io.*;
import java.util.ArrayList;
import java.util.Scanner;
class Note {
private String title;
private String content;
public Note(String title, String content) {
this.title = title;
this.content = content;
}
// Getters and setters for note details
}
public class NotesApp {
private static ArrayList<Note> notes = new ArrayList<>();
private static final String FILENAME = "notes.txt"; // File to save notes
private static Scanner scanner = new Scanner(System.in);
public static void main(String[] args) {
loadNotes(); // Load saved notes from the file
while (true) {
displayMenu();
int choice = scanner.nextInt();
scanner.nextLine(); // Consume newline character
switch (choice) {
case 1:
createNote();
break;
case 2:
viewNotes();
break;
case 3:
editNote();
break;
case 4:
deleteNote();
break;
case 5:
saveNotes(); // Save notes to the file
System.out.println("Goodbye!");
System.exit(0);
default:
System.out.println("Invalid choice. Please try again.");
}
}
}
// Implement methods for creating, viewing, editing, and deleting notes
private static void displayMenu() {
System.out.println("\nNotes Keeping App");
System.out.println("1. Create a new note");
System.out.println("2. View saved notes");
System.out.println("3. Edit a note");
System.out.println("4. Delete a note");
System.out.println("5. Exit");
System.out.print("Enter your choice: ");
}
private static void loadNotes() {
try (BufferedReader reader = new BufferedReader(new FileReader(FILENAME))) {
String line;
while ((line = reader.readLine()) != null) {
String[] parts = line.split("\\|");
if (parts.length == 2) {
notes.add(new Note(parts[0], parts[1]));
}
}
} catch (IOException e) {
// Handle file loading errors, or create the file if it doesn't exist
}
}
private static void saveNotes() {
try (PrintWriter writer = new PrintWriter(new FileWriter(FILENAME))) {
for (Note note : notes) {
writer.println(note.getTitle() + "|" + note.getContent());
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
| 1 | import java.io.*; |
| 2 | import java.util.ArrayList; |
| 3 | import java.util.Scanner; |
| 4 | |
| 5 | class Note { |
| 6 | private String title; |
| 7 | private String content; |
| 8 | |
| 9 | public Note(String title, String content) { |
| 10 | this.title = title; |
| 11 | this.content = content; |
| 12 | } |
| 13 | |
| 14 | // Getters and setters for note details |
| 15 | } |
| 16 | |
| 17 | public class NotesApp { |
| 18 | private static ArrayList<Note> notes = new ArrayList<>(); |
| 19 | private static final String FILENAME = "notes.txt"; // File to save notes |
| 20 | private static Scanner scanner = new Scanner(System.in); |
| 21 | |
| 22 | public static void main(String[] args) { |
| 23 | loadNotes(); // Load saved notes from the file |
| 24 | |
| 25 | while (true) { |
| 26 | displayMenu(); |
| 27 | int choice = scanner.nextInt(); |
| 28 | scanner.nextLine(); // Consume newline character |
| 29 | |
| 30 | switch (choice) { |
| 31 | case 1: |
| 32 | createNote(); |
| 33 | break; |
| 34 | case 2: |
| 35 | viewNotes(); |
| 36 | break; |
| 37 | case 3: |
| 38 | editNote(); |
| 39 | break; |
| 40 | case 4: |
| 41 | deleteNote(); |
| 42 | break; |
| 43 | case 5: |
| 44 | saveNotes(); // Save notes to the file |
| 45 | System.out.println("Goodbye!"); |
| 46 | System.exit(0); |
| 47 | default: |
| 48 | System.out.println("Invalid choice. Please try again."); |
| 49 | } |
| 50 | } |
| 51 | } |
| 52 | |
| 53 | // Implement methods for creating, viewing, editing, and deleting notes |
| 54 | |
| 55 | private static void displayMenu() { |
| 56 | System.out.println("\nNotes Keeping App"); |
| 57 | System.out.println("1. Create a new note"); |
| 58 | System.out.println("2. View saved notes"); |
| 59 | System.out.println("3. Edit a note"); |
| 60 | System.out.println("4. Delete a note"); |
| 61 | System.out.println("5. Exit"); |
| 62 | System.out.print("Enter your choice: "); |
| 63 | } |
| 64 | |
| 65 | private static void loadNotes() { |
| 66 | try (BufferedReader reader = new BufferedReader(new FileReader(FILENAME))) { |
| 67 | String line; |
| 68 | while ((line = reader.readLine()) != null) { |
| 69 | String[] parts = line.split("\\|"); |
| 70 | if (parts.length == 2) { |
| 71 | notes.add(new Note(parts[0], parts[1])); |
| 72 | } |
| 73 | } |
| 74 | } catch (IOException e) { |
| 75 | // Handle file loading errors, or create the file if it doesn't exist |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | private static void saveNotes() { |
| 80 | try (PrintWriter writer = new PrintWriter(new FileWriter(FILENAME))) { |
| 81 | for (Note note : notes) { |
| 82 | writer.println(note.getTitle() + "|" + note.getContent()); |
| 83 | } |
| 84 | } catch (IOException e) { |
| 85 | e.printStackTrace(); |
| 86 | } |
| 87 | } |
| 88 | } |
| 89 |