Habit Tracker with Calendar Sync

Set up the Java project using Maven or Gradle for dependency management.

Create the project structure with proper package organization (e.g., model, view, controller, dao, util).

Implement the Habit class to represent habits with properties like id, name, description, and completion status.

Develop a HabitTracker class to manage the collection of habits and their states.

Design the GUI using Java Swing, starting with a main window containing a list of habits and buttons for adding/editing habits.

Implement the habit tracking functionality, including adding new habits, editing existing ones, and marking habits as complete.

Set up an SQLite database and create the necessary tables to store habits and their completion data.

Implement Data Access Object (DAO) classes to handle CRUD operations for habits and their data.

Integrate Google Calendar API by setting OAuth 2.0 authentication and authorization.

Create a service class to handle Google Calendar API requests and responses for syncing habits.

Implement the synchronization logic to send habit completion data to Google Calendar.

Develop a reports module to generate daily, weekly, and monthly habit completion statistics.

Create a statistics display panel in the GUI to show progress visualizations (e.g., charts, graphs).

Implement error handling and logging mechanisms to manage exceptions and user notifications.

Write unit tests for core functionality using JUnit and Mockito.

Conduct integration testing to ensure Google Calendar API and SQLite database interactions work as expected.

Prepare the application for deployment by creating a JAR file and writing deployment scripts.

Document the application with user manuals and developer guides.