Formatted according to google-style and added a ServerLobby class meant to represent the context of the game when not in a lobby or in a running game.

src/main/java/ch/unibas/dmi/dbis/cs108/sebaschi/CentralServerData.java

@@ -25,5 +25,5 @@ public class CentralServerData {
 
   private Map<Client, Socket> clientSocketMap;
   private Map<Socket, Client> socketClientMap;
-  private Map<Game,Client> gameClientMap;
+  private Map<Game, Client> gameClientMap;
 }

src/main/java/ch/unibas/dmi/dbis/cs108/sebaschi/GameSessionData.java

@@ -9,9 +9,8 @@ import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
 /**
- * Class that shall contain all non-game logik information
- * relevant to a game session needed for client-server and client-client
- * communication.
+ * Class that shall contain all non-game logik information relevant to a game session needed for
+ * client-server and client-client communication.
  */
 public class GameSessionData {
 

src/main/java/ch/unibas/dmi/dbis/cs108/sebaschi/ServerLobby.java

@@ -0,0 +1,10 @@
+package ch.unibas.dmi.dbis.cs108.sebaschi;
+
+/**
+ * This class is just everyone on the server, which games are open to join, who is in session. I.E.
+ * the context of the game just after joining the server, before starting a game and entering into a
+ * lobby.
+ */
+public class ServerLobby {
+
+}