A multi-mode Java Todo Application supporting GUI, console, and headless operation with user login and persistent storage.

This project demonstrates advanced Java features including Swing GUI, concurrent console operations, file persistence, and a modular architecture for further expansion.

• Multi-mode operation

  • GUI + Console concurrently
  • Headless mode (run with --headless)

• User Login

  • Hardcoded credentials:
    • Username: admin
    • Password: 1234
  • GUI login dialog or console login depending on mode

• Task Management

  • Add, complete, and remove tasks
  • Color-coded tasks in GUI (red = incomplete, green = completed)
  • Pretty console output ([✓] Task vs [✗] Task)

• Persistent Storage

  • Tasks saved to tasks.txt in name;true/false format
  • Automatically loads saved tasks on startup

• Concurrent Console + GUI

  • Console commands work concurrently with GUI updates
  • Supports adding, completing, removing tasks from either interface

• Headless Mode

  • Launch with --headless to run only the console version (no GUI, login in console)

• Java 17+ (JDK recommended)
• Compatible IDE (IntelliJ, Eclipse) or command-line tools

java Main