First you need start RoomPicker Server and then you can start RoomPicker Control Panel (if you need). After that, you can connect to the server using RoomPicker Client.

Example of using the RoomPicker Client

Create a Node and a Room, after that, system pick up a room for 5 users.

class Example {
    public static void main(String[] args) {
        var client = new RoomPickerClient(
                "http://dragonestia.ru:8080",
                "admin",
                "qwerty123"
        );

        // Creating node
        var nodeId = NodeIdentifier.of("test-node");
        var nodeDefinition = new NodeDefinition(nodeId)
                .setPickingMethod(PickingMethod.LEAST_PICKED);
        client.getNodeRepository().saveNode(nodeDefinition);

        // Creating room
        var roomId = RoomIdentifier.of("test-room");
        var roomDefinition = new RoomDefinition(nodeId, roomId)
                .setMaxSlots(10)
                .setPayload("Hello world!");
        client.getRoomRepository().saveRoom(roomDefinition);

        // Picking room for 5 users
        var users = new HashSet<UserIdentifier>();
        for (int i = 0 ; i < 5; i++) {
            var user = UserIdentifier.of("test-user-" + i);
            users.add(user);
        }
        try {
            var response = client.getNodeRepository().pickRoom(nodeId, users);
            // TODO...
        } catch (NoRoomsAvailableException ex) {
            // Cannot pick room
        }
    }
}