private Multimap<String, Socket> onlineUsers = ArrayListMultimap.create(); UsersMessage = onlineUsers.get(username); SocketThread.sendLogOff(ListSocket.UsersMessage, username, computername); for (Socket m : UsersMessage) { kss++; onlineUsers.remove(username, m); }

If there is onlineUsers.remove (username, m), then for some reason the cycle is executed once, and if not, then the number of times it is in the UsersMessage What is it?

    1 answer 1

    You remove from the collection on which you iterate. To do this, use Iterator.

     Iterator<String> iterator = UsersMessage.iterator(); while (iterator.hasNext()) { iterator.remove(); }
    • Also does not delete - AlexSirk