Implementation using Java technology, this program can communicate with each other between the user and the user, also can be user chat with all people, similar to the QQ group chat, every time and send the information on the server are displayed. Multi-threading technology allows several users to communicate simultaneously.

代码
....\.classpath
....\.project
....\BaseProject
....\...........\base
....\...........\....\io
....\...........\....\..\FileManager.class
....\...........\....\..\FileManager.java
....\...........\....\util
....\...........\....\....\DateTransform.class
....\...........\....\....\StringTransform.class
....\...........\....\....\StringTransform.java
....\bin
....\...\base
....\...\....\io
....\...\....\..\FileManager.class
....\...\....\util
....\...\....\....\StringTransform.class
....\...\com
....\...\...\chat
....\...\...\....\client
....\...\...\....\......\About$1.class
....\...\...\....\......\About.class
....\...\...\....\......\ClientFrame$1.class
....\...\...\....\......\ClientFrame$2.class
....\...\...\....\......\ClientFrame$3.class
....\...\...\....\......\ClientFrame$4.class
....\...\...\....\......\ClientFrame$5.class
....\...\...\....\......\ClientFrame$6.class
....\...\...\....\......\ClientFrame.class
....\...\...\....\constants
....\...\...\....\.........\ClientConstants.class
....\...\...\....\.........\ServerConstants.class
....\...\...\....\dto
....\...\...\....\...\MsgDTO1.class
....\...\...\....\io
....\...\...\....\..\TxtManager.class
....\...\...\....\server
....\...\...\....\......\Client.class
....\...\...\....\......\Server.class
....\...\...\....\......\ServerFrame$1.class
....\...\...\....\......\ServerFrame$2.class
....\...\...\....\......\ServerFrame$3.class
....\...\...\....\......\ServerFrame$4.class
....\...\...\....\......\ServerFrame.class
....\...\...\....\util
....\...\...\....\....\FontDialog$1.class
....\...\...\....\....\FontDialog$2.class
....\...\...\....\....\FontDialog$DialogResult.class
....\...\...\....\....\FontDialog.class
....\...\...\....\....\XYConstraints.class
....\...\...\....\....\XYLayout.class
....\...\images


....\...\main
....\...\....\ClientMainClass$1.class
....\...\....\ClientMainClass$2.class
....\...\....\ClientMainClass$3.class
....\...\....\ClientMainClass.class
....\...\....\ServerMainClass$1.class
....\...\....\ServerMainClass$2.class
....\...\....\ServerMainClass.class
....\ChatSystemClient
....\................\com
....\................\...\chat
....\................\...\....\client
....\................\...\....\......\About.java
....\................\...\....\......\ClientFrame.java
....\................\...\....\constants
....\................\...\....\.........\ClientConstants.java
....\................\...\....\io
....\................\...\....\..\TxtManager.java
....\................\...\....\util
....\................\...\....\....\FontDialog.java
....\................\...\....\....\XYConstraints.java
....\................\...\....\....\XYLayout.java
....\................\images


....\................\main
....\................\....\ClientMainClass.java
....\ChatSystemServer
....\................\com
....\................\...\chat
....\................\...\....\constants
....\................\...\....\.........\ServerConstants.java
....\................\...\....\dto
....\................\...\....\...\MsgDTO1.java
....\................\...\....\server
....\................\...\....\......\Server.java
....\................\...\....\......\ServerFrame.java
....\................\main
....\................\....\ServerMainClass.java

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