File list (Check if you may need any files):
Mediator\.classpath
........\.project
........\.settings\org.eclipse.jdt.core.prefs
........\bin\ChatRoom\AbstractChatroom.class
........\...\........\ChatGroup.class
........\...\........\Client.class
........\...\........\CommonMember.class
........\...\........\DiamondMember.class
........\...\........\Member.class
........\src\ChatRoom\AbstractChatroom.java
........\...\........\ChatGroup.java
........\...\........\Client.java
........\...\........\CommonMember.java
........\...\........\DiamondMember.java
........\...\........\Member.java
........\bin\ChatRoom
........\src\ChatRoom
........\.settings
........\bin
........\src
Mediator