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 */
28 public class ChatCommand {
29 public static final int LOGIN = 0;
30
31 public static final int QUIT = 1;
32
33 public static final int BROADCAST = 2;
34
35 private final int num;
36
37 private ChatCommand(int num) {
38 this.num = num;
39 }
40
41 public int toInt() {
42 return num;
43 }
44
45 public static ChatCommand valueOf(String s) {
46 s = s.toUpperCase();
47 if ("LOGIN".equals(s)) {
48 return new ChatCommand(LOGIN);
49 }
50 if ("QUIT".equals(s)) {
51 return new ChatCommand(QUIT);
52 }
53 if ("BROADCAST".equals(s)) {
54 return new ChatCommand(BROADCAST);
55 }
56
57 throw new IllegalArgumentException("Unrecognized command: " + s);
58 }
59 }