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日期:2021-10-08 10:21

Algorithm Design and Analysis

Milestone 1: Software Assignment

Due 9 October

Submission Instructions

Create a single .zip archive containing the following components:

? For development tasks 1–3, please include .java files in the correct folder

format. Please ensure code files do not contain any non-English characters

(such as comments in Chinese) because my AUT computer cannot display

these characters. Worse, these code files do not compile for me.

? For development task 4, please create a short 2-4 minute video of the

demonstration in .mp4 format. Please ensure that the video file size is not

more than 30MB.

Please submit the .zip file on Blackboard→Assessment→Milestone 1.

Development tasks

The purpose of this assignment is to develop a client/server messaging system

where clients can connect to the server and use it to send messages to specified

clients.

The system should include the following components:

1. Server which maintains a list of clients that are currently connected (each

with a unique name) and passes messages from one client to another. It

should provide some mechanism for notifying clients when the server will

be terminating connections or when a client disconnects. It should also

demonstrate at least one design pattern. (15 marks)

2. Client Interface which is a GUI used to connect to the server and obtain

a list of other currently connected clients. It should enable a client to

send a text message to another chosen client via the server and display

the messages received from other clients. The list should update the GUI

whenever a new client connects to or disconnects from the server.

(15 marks)

1

3. Two Other Features such as user accounts, sending and receiving images,

utilising UDP for some communication, hidden connections via a password

whose presence is only known to the other hidden clients, or when the

server starts it sends e-mails to a list of addresses notifying them of the

IP address and port of the server. (15 marks)

4. Demonstration of features of the complete system using a screen-cast

video. The video should comment on the requirements listed in tasks

1–3 above. (5 marks)

2


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