public void HandlerUserInput(ClientHandler newClient) {
        newClient.isBusy = false;
        while (true) {

            serverMessage = "";
            command = null;

            try {

                command = in.readUTF();
                System.out.println("Command from client: " + command);

                if (command.matches("/refresh")) {
                    if (gameRooms.isEmpty()) {
                        out.writeUTF("No games found!");
                    } else {

                        for (GameRoom game : gameRooms) {
                            if (game.isFull == false) {
                                serverMessage = serverMessage + game.roomName + " Connected users : " + game.connectedClients.size() + "  Host: " + game.host + "\n";
                            }
                        }
                        out.writeUTF(serverMessage);
                    }
                } else if (command.contains("/create")) {

                    for (GameRoom game : gameRooms) {
                        if (game.host.equals(newClient)) {
                            out.writeUTF("You have already an active room!");
                            newClient.isBusy = true;
                        }
                    }
                    if (!newClient.isBusy) {
                        try {
                            for (GameRoom gm : gameRooms) {
                                if (gm.roomName.matches(command.substring(8))) {
                                    nameBusy = true;
                                    break;
                                }
                            }
                            if (!nameBusy) {
                                gameRooms.add(new GameRoom(command.substring(8), 4, newClient));
                                out.writeUTF("A new gameroom has been created. . . \n Searching for client to connect. . . ");
                                newClient.isBusy = true;
                            } else {
                                out.writeUTF("Roomname already found in list.");
                            }
                        } catch (Exception e) {
                            out.writeUTF("No roomname.");
                        }
                    }
                }
                else if (command.contains("/join")) {
                    Boolean roomFound = true;
                    if (!gameRooms.isEmpty()) {
                        for (GameRoom gm : gameRooms) {
                            try {
                                if (gm.roomName.matches(command.substring(6))) {
                                    if (newClient.isBusy) {
                                        out.writeUTF("You are already connected to a room, write /leave to leave");
                                        break;
                                    } else if (gm.connectedClients.size() >= gm.maxUsers) {
                                        out.writeUTF("Room is full!");
                                        break;
                                    } else if (!gm.connectedClients.contains(newClient)) {
                                        newClient.isBusy = true;
                                        gm.connectedClients.add(newClient);
                                        out.writeUTF("Connecting to room: " + gm.roomName);
                                        break;
                                    }
                                }
                                else {
                                    roomFound = false;
                                }
                            }catch (Exception e){

                                break;
                            }

                        }

                    }else{
                        if (!roomFound){
                            out.writeUTF("Cannot find your requested room");
                        } else {
                            out.writeUTF("There were no rooms found in the list.");
                        }
                    }

                }
                else if (command.matches("/leave")) {
                    try {
                        if (!gameRooms.isEmpty() && newClient.isBusy) {
                            for (GameRoom gm : gameRooms) {
                                if (gm.connectedClients.contains(newClient)) {
                                    if (gm.host.equals(newClient)) {
                                        for (ClientHandler g : gm.connectedClients) {
                                            g.isBusy = false;
                                        }
                                        gameRooms.remove(gm);}
                                    gm.connectedClients.remove(newClient);
                                    newClient.isBusy = false;
                                    out.writeUTF("You left: " + gm.roomName);
                                    break;
                                }
                            }
                        }
                        else{
                            out.writeUTF("Roomlist is empty or no room to leave.");
                        }
                    } catch (Exception e){
                        e.printStackTrace();
                    }


                } else if (command.matches("/help")) {
                    out.writeUTF("/create [roomname] \t /join [roomname] \t /leave \t /refresh");
                }
                else{
                    out.writeUTF("Could not find any matching commands for: " +command);
                }

            } catch (Exception e) {
                e.printStackTrace();
            }
        }

    }