File list (Check if you may need any files):
chat
....\.classpath
....\.project
....\bin
....\...\com
....\...\...\bean
....\...\...\....\Chat.class
....\...\...\....\LoginUser.class
....\...\...\....\Message.class
....\...\...\....\RegisterUser.class
....\...\...\client
....\...\...\......\Client$1.class
....\...\...\......\Client$2.class
....\...\...\......\Client$3.class
....\...\...\......\Client$4.class
....\...\...\......\Client$Windowclose.class
....\...\...\......\Client.class
....\...\...\......\Login.class
....\...\...\......\Register.class
....\...\...\server
....\...\...\......\ConnServer.class
....\...\...\......\ExitServer.class
....\...\...\......\Server$1.class
....\...\...\......\Server$2.class
....\...\...\......\Server$3.class
....\...\...\......\Server.class
....\...\...\......\ThreadServer.class
....\...\...\StartClient.class
....\...\...\StartServer.class
....\...\images
....\...\......\logo.jpg
....\...\log
....\...\...\user.txt
....\src
....\...\com
....\...\...\bean
....\...\...\....\Chat.java
....\...\...\....\LoginUser.java
....\...\...\....\Message.java
....\...\...\....\RegisterUser.java
....\...\...\client
....\...\...\......\Client.java
....\...\...\......\Login.java
....\...\...\......\Register.java
....\...\...\server
....\...\...\......\ConnServer.java
....\...\...\......\ExitServer.java
....\...\...\......\Server.java
....\...\...\......\ThreadServer.java
....\...\...\StartClient.java
....\...\...\StartServer.java
....\...\images
....\...\......\logo.jpg
....\...\log
....\...\...\user.txt