The system uses C/S structure, the development of the use of the TCP/IP protocol, multi-threaded, socket programming technology. The use of multi-threaded server listens on multiple clients. System information is transmitted and read using a custom object to pass. Using MySql database for user information to be stored. The main module of the system, user registration module, user login module, the user module, add friends and remove friends friends to chat module. The current system is transmitted through the server and chat with friends.

QqClient\.classpath
........\.project
........\bin\com\qq\client\model\QqClientConServer.class
........\...\...\..\......\.....\QqClientUser.class
........\...\...\..\......\tools\ClientConServerThread.class
........\...\...\..\......\.....\hashmap.class
........\...\...\..\......\.....\ManageClientConServerThread.class
........\...\...\..\......\.....\ManageQqChat.class
........\...\...\..\......\.....\ManageQqFriendList.class
........\...\...\..\......\view\QqChat$1.class
........\...\...\..\......\....\QqChat.class
........\...\...\..\......\....\QqClientLogin$1.class
........\...\...\..\......\....\QqClientLogin$2.class
........\...\...\..\......\....\QqClientLogin.class
........\...\...\..\......\....\QqFriendList$1.class
........\...\...\..\......\....\QqFriendList$2.class
........\...\...\..\......\....\QqFriendList$3.class
........\...\...\..\......\....\QqFriendList$4.class
........\...\...\..\......\....\QqFriendList$5.class
........\...\...\..\......\....\QqFriendList.class
........\...\...\..\......\....\Register.class
........\...\...\..\.ommon\Message.class
........\...\...\..\......\MessageType.class
........\...\...\..\......\User.class
........\...\image\1-1.gif
........\...\.....\1.gif
........\...\.....\logo554.GIF
........\...\.....\图标.gif
........\...\.....\头像.GIF
........\...\.....\注册.gif
........\src\com\qq\client\model\QqClientConServer.java
........\...\...\..\......\.....\QqClientUser.java
........\...\...\..\......\tools\ClientConServerThread.java
........\...\...\..\......\.....\hashmap.java
........\...\...\..\......\.....\ManageClientConServerThread.java
........\...\...\..\......\.....\ManageQqChat.java
........\...\...\..\......\.....\ManageQqFriendList.java
........\...\...\..\......\view\QqChat.java
........\...\...\..\......\....\QqClientLogin.java
........\...\...\..\......\....\QqFriendList.java
........\...\...\..\......\....\Register.java
........\...\...\..\.ommon\Message.java
........\...\...\..\......\MessageType.java
........\...\...\..\......\User.java
........\...\image\1-1.gif
........\...\.....\1.gif
........\...\.....\logo554.GIF
........\...\.....\图标.gif
........\...\.....\头像.GIF
........\...\.....\注册.gif
..server\.classpath
........\.project
........\bin\com\qq\common\Message.class
........\...\...\..\......\MessageType.class
........\...\...\..\......\User.class
........\...\...\..\server\db\SqlHelper.class
........\...\...\..\......\model\MainThread.class
........\...\...\..\......\.....\ManageClientThread.class
........\...\...\..\......\.....\MyQqServer.class
........\...\...\..\......\.....\QqServerUser.class
........\...\...\..\......\.....\SerConClientThread.class
........\...\...\..\......\view\MyServerFrame.class
........\lib\mysql-jdbc-bin.jar
........\src\com\qq\common\Message.java
........\...\...\..\......\MessageType.java
........\...\...\..\......\User.java
........\...\...\..\server\db\SqlHelper.java
........\...\...\..\......\model\MainThread.java
........\...\...\..\......\.....\ManageClientThread.java
........\...\...\..\......\.....\MyQqServer.java
........\...\...\..\......\.....\QqServerUser.java
........\...\...\..\......\.....\SerConClientThread.java
........\...\...\..\......\view\MyServerFrame.java
..Client\bin\com\qq\client\model
........\...\...\..\......\tools
........\...\...\..\......\view
........\src\com\qq\client\model
........\...\...\..\......\tools
........\...\...\..\......\view
..server\bin\com\qq\server\db
........\...\...\..\......\model
........\...\...\..\......\tools
........\...\...\..\......\view
........\src\com\qq\server\db
........\...\...\..\......\model
........\...\...\..\......\tools
........\...\...\..\......\view
..Client\bin\com\qq\client
........\...\...\..\common
........\src\com\qq\client
........\...\...\..\common
..server\bin\com\qq\common
........\...\...\..\server
........\src\com\qq\common
........\...\...\..\server
..Client\bin\com\qq
........\src\com\qq
..server\bin\com\qq
........\src\com\qq
..Client\bin\com

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