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To-Do List Application - README

Project Overview

The To-Do List Application is a simple Java-based program that allows users to manage their tasks. With this application, users can:

• Add new tasks
• Remove tasks
• Mark tasks as completed
• View all tasks, including their status (Completed/Pending)

This application is implemented using basic Java concepts such as arrays, loops, and conditional statements, offering a simple and interactive command-line interface for task management.

Features

• Add Task: Users can add tasks to the to-do list.
• Remove Task: Users can remove tasks by selecting a task number.
• Mark Task as Completed: Tasks can be marked as completed, changing their status.
• View Tasks: Displays a list of all tasks with their current status.
• Task Status: Each task displays whether it is Pending or Completed.
• Interactive Menu: Users interact with a menu to choose operations such as adding, removing, or marking tasks as completed.

Technologies Used

• Programming Language: Java
• Data Structures: ArrayList for storing tasks
• User Interface: Command-line interface (CLI)
• Class Design: Two primary classes: Todo (for individual tasks) and TodoList (for managing the task list)

Installation

Prerequisites

• Java 8 or later installed on your system.

Steps to Set Up

1. Clone the Repository:

   git clone https://github.com/DeepakPanneerselvam1455/TodoListApplication.git

2. Install Java:

   • Download and install Java JDK if it's not already installed.

3. Run the Application:

   • Open the project folder in your IDE or run the game directly from the terminal.
   • To run the application via terminal:

     javac TodoList.java
     java TodoList

Gameplay

Once the system is running, you will see the following menu options:

1. Add Task: Add a new task to the to-do list.
2. Remove Task: View existing tasks and remove one by selecting its number.
3. Mark Task as Completed: Mark a task as completed by selecting it from the list.
4. View Tasks: View all tasks and their statuses (Completed or Pending).
5. Exit: Exit the application.

Example Interaction:

To-Do List Menu:
1. Add Task
2. Remove Task
3. Mark Task as Completed
4. View Tasks
5. Exit
Choose an option: 1
Enter the task: Buy groceries

To-Do List Menu:
1. Add Task
2. Remove Task
3. Mark Task as Completed
4. View Tasks
5. Exit
Choose an option: 4
1. Buy groceries (Pending)

To-Do List Menu:
1. Add Task
2. Remove Task
3. Mark Task as Completed
4. View Tasks
5. Exit
Choose an option: 3
Enter task number to mark as completed: 1
Task marked as completed.

To-Do List Menu:
1. Add Task
2. Remove Task
3. Mark Task as Completed
4. View Tasks
5. Exit
Choose an option: 4
1. Buy groceries (Completed)

Code Structure

• Todo.java: The Todo class represents a task with properties such as task description (task) and completion status (isCompleted).
• TodoList.java: The TodoList class manages the collection of tasks and provides methods for adding, removing, marking tasks as completed, and displaying all tasks.

Example of Todo.java

class Todo {
    private String task;
    private boolean isCompleted;

    public Todo(String task) {
        this.task = task;
        this.isCompleted = false;
    }

    public String getTask() {
        return task;
    }

    public boolean isCompleted() {
        return isCompleted;
    }

    public void markAsCompleted() {
        this.isCompleted = true;
    }

    @Override
    public String toString() {
        return task + (isCompleted ? " (Completed)" : " (Pending)");
    }
}

Example of TodoList.java

public class TodoList {
    private ArrayList<Todo> tasks;

    public TodoList() {
        tasks = new ArrayList<>();
    }

    public void addTask(String task) {
        tasks.add(new Todo(task));
    }

    public void removeTask(int index) {
        if (index >= 0 && index < tasks.size()) {
            tasks.remove(index);
            System.out.println("Task removed.");
        } else {
            System.out.println("Invalid index.");
        }
    }

    public void markTaskAsCompleted(int index) {
        if (index >= 0 && index < tasks.size()) {
            tasks.get(index).markAsCompleted();
            System.out.println("Task marked as completed.");
        } else {
            System.out.println("Invalid index.");
        }
    }

    public void displayTasks() {
        if (tasks.isEmpty()) {
            System.out.println("No tasks in the list.");
            return;
        }
        for (int i = 0; i < tasks.size(); i++) {
            System.out.println(i + 1 + ". " + tasks.get(i));
        }
    }
}

Author

• Author: Deepak P

License

This project is licensed under the MIT License - see the LICENSE file for details.

Contact

For any questions or contributions, feel free to open an issue or contact the project maintainer.

• Contact: Deepak P