Introduction - If you have any usage issues, please Google them yourself
It is the implementation of GUI for a chat room program.
Behaviors (Server)
When the server starts up, it should try to load from “accounts.dat” for saved accounts
o Each account consists of the username, the password and last login time of the user
o You need to decide how the data should be stored
o The file should be created automatically if it does not exist.
The server should update “accounts.dat” accordingly whenever is needed.
The server should handle connections from clients
o When a client login or logout, the server should update all other clients about it
o When a client send a message, the server should redirect the message to all other
clients
o When a client change password, the server should update its record accordingly
The server should communicate with the client by sending objects (i.e., using
ObjectInputStream and ObjectOutputStream)
For the client
The buddy list will be updated automatically when someone logged in or out.
When a user send a messag