2 * Copyright (C) 2016 Roland Haeder
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 package org.mxchange.jcore.client;
19 import java.io.IOException;
20 import java.sql.SQLException;
21 import org.mxchange.jcore.FrameworkInterface;
24 * An interface for application clients
26 * @author Roland Haeder<roland@mxchange.org>
28 public interface Client extends FrameworkInterface {
31 * Shuts down the client and therefore whole application
33 * @throws java.io.IOException If an IO error occurs
34 * @throws java.sql.SQLException If a SQL error occurs
36 void doShutdown () throws IOException, SQLException;
39 * Enables isRunning attribute which singals that the client is running
41 void enableIsRunning ();
44 * Inizializes this client
49 * Determines whether the client is still active by checking some conditions
51 * @return Whether the client is still active
56 * Displays a message to the user
58 * @param message Message to show to the user
60 void outputMessage (final String message);
63 * Shows introduction to user