NotesApp - Java File I/O Notes Manager 📝

A simple console-based notes management application written in Java that demonstrates file I/O operations using FileWriter and FileReader/BufferedReader.

🌟 Features

• Create Notes: Write new notes with custom titles
• Append to Notes: Add content to existing notes
• List All Notes: View all saved note files
• Read Notes: Display the contents of any note
• Delete Notes: Remove notes with confirmation
• Search Notes: Find text across all notes (case-insensitive)
• Auto Directory Creation: Creates notes folder automatically
• Safe Filenames: Sanitizes titles to prevent filesystem issues

🛠️ How to Build & Run

Prerequisites

• Java JDK 8 or higher
• Command line access (PowerShell/Terminal)

Build and Run

# Compile the Java file
javac NotesApp.java

# Run the application
java NotesApp

📱 Application Screenshots

Main Menu

The main menu showing all available options

Creating a Note

Creating a new note with title and content

Listing Notes

Viewing all saved note files

Reading a Note

Displaying the contents of a selected note

Searching Notes

Searching for text across all notes

🎯 Usage Guide

Menu Options:

1. Create new note (overwrite if exists): Enter a title, then type content line by line. End with a single dot . on its own line
2. Append to existing note: Same as create, but adds content to existing file
3. List all notes: Shows all .txt files in the notes directory
4. Read a note: Select and display a note's contents
5. Delete a note: Remove a note file (with confirmation)
6. Search notes: Find text within all notes (case-insensitive matching)
7. Exit: Close the application

Example Usage Flow:

1. Choose option 1 to create a new note
2. Enter title: My First Note
3. Type your content (multiple lines supported)
4. End with . on a new line
5. Use option 3 to list your notes
6. Use option 4 to read your note back

🏗️ Technical Details

File I/O Implementation:

• FileWriter: Used for writing and appending content to note files
• FileReader + BufferedReader: Used for reading note contents efficiently
• File Operations: Automatic directory creation, file listing, deletion
• Error Handling: Try-catch blocks for all file operations

File Structure:

project-folder/
├── NotesApp.java      # Main application file
├── README.md          # This file
└── notes/            # Auto-created directory for note files
    ├── note1.txt
    ├── note2.txt
    └── ...

🔧 Code Features Demonstrated

• File I/O Operations: Reading and writing text files
• Directory Management: Creating and managing file directories
• User Input Handling: Scanner for console input
• String Processing: Filename sanitization and text searching
• Exception Handling: Proper error handling for file operations
• Menu-driven Interface: Console-based user interaction

📋 Requirements Met

✅ Working .java file using FileReader/FileWriter
✅ Text-based notes manager functionality
✅ File read/write operations demonstrated
✅ User-friendly console interface
✅ Error handling and input validation

🚀 Future Enhancements

• Export all notes to a single file
• Import notes from text files
• Note categories/tags
• Date/time stamps for notes
• Backup and restore functionality
• Configuration file support

📄 License

This project is created for educational purposes to demonstrate Java File I/O operations.

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Created as part of Java File I/O learning exercises