Jeff User Guide

Introduction

Jeff is command-line-based chatbot to help users keep track of their tasks! There are 3 types of tasks available in Jeff: Todo, Deadline and Event

This guide will bring you through the various features of Jeff, and how to utilise them!

Jeff's Features

1. Adding a Todo Task: todo

Purpose: Adds a non-time-sensitive task to the task list.

Format: todo [description]

• description field must be non-empty.

Example: todo homework

Expected output:

Haiyaa the following task needs to be done:
  [T][ ] homework
Now you have 1 task(s) in ur list

2. Adding a Deadline Task: deadline

Purpose: Adds a task due by a specific date to the task list.

Format: deadline [description] [/by yyyy-MM-dd]

• description and by fields must be non-empty.
• by field must be in the specified date format.

Example: deadline homework /by 2025-10-02

Expected output:

Haiyaa the following task needs to be done:
  [D][ ] homework (by: Oct 2 2025)
Now you have 2 task(s) in ur list

3. Adding an Event Task: event

Purpose: Adds a task which will happen within a specific date range.

Format: event [description] [/from yyyy-MM-dd] [/to yyyy-MM-dd]

• description, from and to fields must be non-empty.
• from and to fields must be in the specified date format.

Example: event do homework /from 2025-10-02 /to 2025-10-03

Expected output:

Haiyaa the following task needs to be done:
  [E][ ] do homework (from: Oct 2 2025 to: Oct 3 2025)
Now you have 3 task(s) in ur list

4. Listing all Tasks: list

Purpose: Displays all tasks the user has added.

Format: list

Example Output:

orh hor never finish ur tasks:
1.[T][ ] homework
2.[D][ ] homework (by: Oct 2 2025)
3.[E][ ] do homework (from: Oct 2 2025 to: Oct 3 2025)

5. Marking a task: mark

Purpose: Mark a task which is complete by specifying its task number.

Format: mark [task index]

Example: mark 1

Expected Output:

ogei marked task dOnE
[T][X] homework

6. Unmarking a task: unmark

Purpose: Unmark a task which is uncomplete by specifying its task number.

Format: unmark [task index]

Example: unmark 1

Expected Output:

womp womp task not finished :(
[T][ ] homework

7. Deleting a Task: delete

Purpose: Removes a task from your list.

Format: delete [task index]

Example: delete 1

Expected Output:

i have reeeemoved the taskkk: 
[T][ ] homework
YAYYYY!!! Only 2 task(s) left in ur list!

8. Finding a Task: find

Purpose: Find a task from your list based on a keyword that matches the task description.

Format: find [keyword]

Example: find homework

Expected Output:

here's all ur matches:
1.[D][ ] homework (by: Oct 2 2025)
2.[E][ ] do homework (from: Oct 2 2025 to: Oct 3 2025)

9. Exiting the Program: bye

Purpose: Exit the chatbot.

Format: bye

Expected Output:

Bye. Hope to see you again soon!

Saving the Data

Jeff automatically saves your tasks to a text file located in the data folder.

Note: Do not manually edit the text file, as incorrect formatting may cause data loss.