1 /*
2 * Copyright 2005,2009 Ivan SZKIBA
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.ini4j.sample;
17
18 //<editor-fold defaultstate="collapsed" desc="apt documentation">
19 //|
20 //| --------------
21 //| ListenerSample
22 //|
23 //|ListenerSample
24 //|
25 //| This advanced sample presents the event-controlled usage. The \[ini4j\]
26 //| library fully supports the events defined in Preferences API.
27 //|
28 //| This sample program expect the .ini file as a command line argument.
29 //| If there is no such argument, it use the {{{dwarfs.ini.html}dwarfs.ini}} file.
30 //|
31 //</editor-fold>
32 //{
33 import org.ini4j.IniPreferences;
34
35 import java.io.FileInputStream;
36
37 import java.util.prefs.*;
38
39 public class ListenerSample
40 {
41 public static final String FILENAME = "dwarfs.ini";
42
43 public static void main(String[] args) throws Exception
44 {
45 String filename = (args.length > 0) ? args[0] : FILENAME;
46 Preferences prefs = new IniPreferences(new FileInputStream(filename));
47 Listener listener = new Listener();
48
49 prefs.addNodeChangeListener(listener);
50 Preferences jerry = prefs.node("jerry");
51
52 jerry.addPreferenceChangeListener(listener);
53 jerry.put("color", "blue");
54 jerry.put("color", "gray");
55 jerry.putInt("age", 2);
56 }
57
58 static class Listener implements NodeChangeListener, PreferenceChangeListener
59 {
60 public void childAdded(NodeChangeEvent event)
61 {
62 System.out.println("node added: " + event.getChild().name());
63 }
64
65 public void childRemoved(NodeChangeEvent event)
66 {
67 System.out.println("node removed: " + event.getChild().name());
68 }
69
70 public void preferenceChange(PreferenceChangeEvent event)
71 {
72 System.out.println("preference changed: " + event.getKey() + " = " + event.getNewValue());
73 }
74 }
75 }
76 //}