Introduction - If you have any usage issues, please Google them yourself
Project Description: The project is divided into two parts: server and client. Only when the server opens the service user
Can log in and use. Users registered correctly, you can achieve more than chat, chats can be saved to the local accounts users can sign up account, the server side you can see the information of registered users and online users
Use of technology: This project is the use of the J2SE knowledge related to the opening of the file read and write, the graphical interface GUI
Hair, combined with the use of multi-threaded collection Hashmap