Record a short video (5 - 10 minutes) where demonstrate the functionality your Web Application and publish it in your YouTube channel.

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Java Online Marathon

‘ToDo List’ Application

Please, create Service Layer of ‘ToDo List’ Application should be able to:

1. Add new user to the Application.
2. Update/Delete/Gets existing users.
3. Add new To-Do List to an existing user.
4. Update/Delete/Gets existing 'To-Do Lists'.
5. Add new Task to an existing 'To-Do List'.
6. Update/Delete/Gets existing 'Tasks'.

Write tests for all the above operations.

Implement all necessary getters and setters for model level classes.

You should run tests to demonstrate the execution of the service level code.

* Save a list of all users as a field in the UserService class.