Java Swing Habit Tracker

This is a desktop habit tracker built with Java Swing.

What was fixed for desktop usage

• Added persistent storage, so your data is saved to a local file and restored when you reopen the app.
• Added explicit Save Data and Load Data buttons.
• Added auto-save on checkbox changes and when closing the window.
• Kept the monthly tracker design with date rows and habit checkbox columns.

Features

• Track any number of habits for each day of a selected month.
• Navigate month-to-month.
• End-of-month analysis:
  • Overall completion percentage
  • Perfect day count
  • Best full-completion streak
  • Per-habit completion percentages

Run as desktop app

javac HabitCalendarApp.java
java HabitCalendarApp

Optional: build a runnable JAR

javac HabitCalendarApp.java
jar cfe HabitTracker.jar HabitCalendarApp *.class
java -jar HabitTracker.jar

Data file location

The app stores data in:

• ~/.habit-tracker-data.ser (Linux/macOS)
• %USERPROFILE%\\.habit-tracker-data.ser (Windows)