File list (Check if you may need any files):
Sockets
.......\build
.......\.....\classes
.......\.....\.......\Client
.......\.....\.......\Clients
.......\.....\.......\.......\Chat_ClientServeur.class
.......\.....\.......\.......\Client.class
.......\.....\.......\.......\EmissionC.class
.......\.....\.......\.......\ReceptionC.class
.......\.....\.......\Serveur
.......\.....\.......\Serveurs
.......\.....\.......\........\Accepter_connexion.class
.......\.....\.......\........\Chat_ClientServeur.class
.......\.....\.......\........\EmissionS.class
.......\.....\.......\........\ReceptionS.class
.......\.....\.......\........\Serveur.class
.......\.....\.......\sockets
.......\build.xml
.......\lib
.......\...\CopyLibs
.......\...\........\org-netbeans-modules-java-j2seproject-copylibstask.jar
.......\...\Cryptography.jar
.......\...\nblibraries.properties
.......\manifest.mf
.......\nbproject
.......\.........\build-impl.xml
.......\.........\genfiles.properties
.......\.........\private
.......\.........\.......\private.properties
.......\.........\.......\private.xml
.......\.........\project.properties
.......\.........\project.xml
.......\src
.......\...\Clients
.......\...\.......\Chat_ClientServeur.java
.......\...\.......\Client.java
.......\...\.......\EmissionC.java
.......\...\.......\ReceptionC.java
.......\...\Serveurs
.......\...\........\Accepter_connexion.java
.......\...\........\Chat_ClientServeur.java
.......\...\........\EmissionS.java
.......\...\........\ReceptionS.java
.......\...\........\Serveur.java