Shared White Board

This application provide a shared white board that allow multiple users to draw simultaneously.

• Admin user can create, save and open the white board.
• General users can only draw on the white board, they can concurrently draw 4 shapes and add texts with 16 different colours.
• Admin user has the same drawing functions as general users. Admin user can control whether to accept the new user connect in and kick out a user at any time.
• The sidebar can show all connected users.

System Design

• Built by Java RMI. All communications are through Java RMI
• The white board data are stored in JSON.
• GUI are constructed by java.awt

How to run the programs

Run Project in IntelliJ IDEA

1. Open this project in IDEA
2. Mark Client/src and Server/src as Sources root
3. Edit Configuration -> Add new configuration -> Application -> Select Java 17, correct Module directory and Main class.
4. Run configurations

Build Project in IntelliJ IDEA

1. File -> Project Structure -> Project Settings -> Artifacts -> Add Jar -> Select module and main class with specified output directory
2. Build Artifacts
3. Run your .jar files

Run .jar

Start a server:

java -jar Server.jar

Start a client:

java -jar Client.jar

Demo

Start a server

Admin enter the room

Start a client

Server received request

Client enter the room

Kickout

Right click the client

Drawing