Overview

In this assignment you will create a GUI $($Graphical User Interface$)$ for the GroupChat created back in Assignment

$3.$ The GroupChat, Message, and Reply classes will be used as they were written $($with one minor addition to

Message$).$ We will just create a new interface to allow users to use the GroupChat.

I am providing a JAR file that can be imported into your project that contains the needed GroupChat, Message, and

Reply classes. You are allowed to use your own GroupChat.java, Message.java, and Reply.java files if you wish.

Do not include the JAR file if you want to use your own files.

Various Important Notes

$$ Use $.$setDisable$($boolean$)$ to disable$/$enable the elements$/$tabs as needed.

$$ The Message class contains a static method to extract the id from the String representing a message $($as

produced by toString$)$

$$ I set the font to monospace for the textArea, but you don$$t have to$.$

$$ To refresh the items in the list view, any time there$$s a change, you can clear and then reload all messages to

the items list

$$ ListView contains the method scrollTo. Specify the correct index to scroll to the newest message when

reloading the items

$$ Use a try$/$catch structure when deleting the message to know if the user is not allowed to delete the message.

$($the method in GroupChat will throw the exception$)$

$$ My recommendation for constructing this is to$...$

o Completely build the layout with all needed elements

o Get the Choose User tab working

o Get the other tabs working one at a time.

o Don$$t try to do everything at once. Test often as you are working