1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20 package org.apache.mina.example.chat;
21
22 /**
23 * Encapsulates a chat command. Use {@link #valueOf(String)} to create an
24 * instance given a command string.
25 *
26 * @author The Apache MINA Project (dev@mina.apache.org)
27 * @version $Rev$, $Date$
28 */
29 public class ChatCommand {
30 public static final int LOGIN = 0;
31
32 public static final int QUIT = 1;
33
34 public static final int BROADCAST = 2;
35
36 private final int num;
37
38 private ChatCommand(int num) {
39 this.num = num;
40 }
41
42 public int toInt() {
43 return num;
44 }
45
46 public static ChatCommand valueOf(String s) {
47 s = s.toUpperCase();
48 if ("LOGIN".equals(s)) {
49 return new ChatCommand(LOGIN);
50 }
51 if ("QUIT".equals(s)) {
52 return new ChatCommand(QUIT);
53 }
54 if ("BROADCAST".equals(s)) {
55 return new ChatCommand(BROADCAST);
56 }
57
58 throw new IllegalArgumentException("Unrecognized command: " + s);
59 }
60 }