File list (Check if you may need any files):
Chat_java
.........\.classpath
.........\.project
.........\.settings
.........\.........\org.eclipse.jdt.core.prefs
.........\bin
.........\...\ChatServer
.........\...\..........\ChatServer$1.class
.........\...\..........\ChatServer.class
.........\...\..........\ChatServer.java.bak
.........\...\..........\Help$1.class
.........\...\..........\Help.class
.........\...\..........\Node.class
.........\...\..........\PortConf$1.class
.........\...\..........\PortConf$2.class
.........\...\..........\PortConf$3.class
.........\...\..........\PortConf.class
.........\...\..........\ServerListen.class
.........\...\..........\ServerReceive.class
.........\...\..........\UserLinkList.class
.........\...\Chat_custom
.........\...\...........\ChatClient$1.class
.........\...\...........\ChatClient.class
.........\...\...........\ClientReceive.class
.........\...\...........\ConnectConf$1.class
.........\...\...........\ConnectConf$2.class
.........\...\...........\ConnectConf$3.class
.........\...\...........\ConnectConf.class
.........\...\...........\Help$1.class
.........\...\...........\Help.class
.........\...\...........\MANIFEST.MF
.........\...\...........\UserConf$1.class
.........\...\...........\UserConf$2.class
.........\...\...........\UserConf$3.class
.........\...\...........\UserConf.class
.........\...\icon.gif
.........\...\icon1.gif
.........\src
.........\...\ChatServer
.........\...\..........\ChatServer.java
.........\...\..........\ChatServer.java.bak
.........\...\..........\Help.java
.........\...\..........\Node.java
.........\...\..........\PortConf.java
.........\...\..........\ServerListen.java
.........\...\..........\ServerReceive.java
.........\...\..........\UserLinkList.java
.........\...\Chat_custom
.........\...\...........\ChatClient.java
.........\...\...........\ClientReceive.java
.........\...\...........\ConnectConf.java
.........\...\...........\Help.java
.........\...\...........\MANIFEST.MF
.........\...\...........\UserConf.java
.........\...\icon.gif
.........\...\icon1.gif
聊天.doc
附录一 代码.doc
附录二UML.doc