public ServerChatroom(Chatroom chatroom) { this.textChatroom = (TextChatroom)chatroom; }
public Chatroom joinTopic(String topic) { Chatroom cr=new TextChatroom(topic); return cr; }
public ServerChatroom(Chatroom chatroom) { this.textChatroom = (TextChatroom)chatroom; }
public Chatroom joinTopic(String topic) { Chatroom cr=new TextChatroom(topic); return cr; }