I need help with my java program what code should i put

Make JavaFx. The logic of the application must use ArrayList and exception handling.

Design an application using JavaFx to maintain a to$-$do list with options to add, remove and edit an item on the list.

Use an ArrayList's to store the list of items.

Each time the user adds, removes or edits an item, a new list is displayed reflecting the modification.

Use exception handling to prevent the application from crashing when a button is clicked $($with an empty input box, for example$)$

Minimum requirements for the interface:

A title in the title bar

An input box to enter a new item

Buttons to add, remove and edit an item

A place to display the items that provides the ability to edit

Keep the logic of your application separate from the interface

Application must meets specifications, works as intended and without crashing.

Use an object$-$oriented approach with clear separation between interface and business logic of the application. Uses ArrayList as the data structure to store information.