Write a java class QQ instant messaging program, there are client and server-side.

JAVA_QQ\WLC聊天程序(服务器端)\build\classes\服务器端程序包\DMLGroups.class
.......\.....................\.....\.......\..............\DMLMessageRecord.class
.......\.....................\.....\.......\..............\Identifying.class
.......\.....................\.....\.......\..............\OnLineList.class
.......\.....................\.....\.......\..............\OnLineListArray.class
.......\.....................\.....\.......\..............\QueryInformation.class
.......\.....................\.....\.......\..............\SendAndReceive.class
.......\.....................\.....\.......\..............\ServerThreadForClient.class
.......\.....................\.....\.......\..............\SQLServerDatabase.class
.......\.....................\.....\.......\..............\UpdataPersonalInformation.class
.......\.....................\.....\.......\..............\UpdatePersonalInformation.class
.......\.....................\.....\.......\..............\服务器界面$1.class
.......\.....................\.....\.......\..............\服务器界面$2.class
.......\.....................\.....\.......\..............\服务器界面.class
.......\.....................\.....\depcache\dependencies.txt
.......\.....................\build.xml
.......\.....................\manifest.mf
.......\.....................\nbproject\build-impl.xml
.......\.....................\.........\genfiles.properties
.......\.....................\.........\private\private.properties
.......\.....................\.........\.......\private.xml
.......\.....................\.........\project.properties
.......\.....................\.........\project.xml
.......\.....................\src\服务器端程序包\DMLGroups.java
.......\.....................\...\..............\DMLMessageRecord.java
.......\.....................\...\..............\Identifying.java
.......\.....................\...\..............\OnLineList.java
.......\.....................\...\..............\OnLineListArray.java
.......\.....................\...\..............\QueryInformation.java
.......\.....................\...\..............\SendAndReceive.java
.......\.....................\...\..............\ServerThreadForClient.java
.......\.....................\...\..............\SQLServerDatabase.java
.......\.....................\...\..............\UpdatePersonalInformation.java
.......\.....................\...\..............\服务器界面.form
.......\.....................\...\..............\服务器界面.java
.......\.......系统（客户端程序）\build\built-jar.properties
.......\.........................\.....\classes\客户端程序包\MessageList.class
.......\.........................\.....\.......\............\MyListCellRenderer.class
.......\.........................\.....\.......\............\ObjectArray.class
.......\.........................\.....\.......\............\SendAndReceive.class
.......\.........................\.....\.......\............\个人设置$1.class
.......\.........................\.....\.......\............\个人设置$2.class
.......\.........................\.....\.......\............\个人设置$3.class
.......\.........................\.....\.......\............\个人设置$4.class
.......\.........................\.....\.......\............\个人设置$5.class
.......\.........................\.....\.......\............\个人设置$6.class
.......\.........................\.....\.......\............\个人设置$7.class
.......\.........................\.....\.......\............\个人设置.class
.......\.........................\.....\.......\............\修改密码$1.class
.......\.........................\.....\.......\............\修改密码$2.class
.......\.........................\.....\.......\............\修改密码.class
.......\.........................\.....\.......\............\回应请求$1.class
.......\.........................\.....\.......\............\回应请求$2.class
.......\.........................\.....\.......\............\回应请求.class
.......\.........................\.....\.......\............\好友界面$1.class
.......\.........................\.....\.......\............\好友界面$2.class

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