001 /* 002 * Copyright 2005,2009 Ivan SZKIBA 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 package org.ini4j.sample; 017 018 //<editor-fold defaultstate="collapsed" desc="apt documentation"> 019 //| 020 //| -------------- 021 //| ListenerSample 022 //| 023 //|ListenerSample 024 //| 025 //| This advanced sample presents the event-controlled usage. The \[ini4j\] 026 //| library fully supports the events defined in Preferences API. 027 //| 028 //| This sample program expect the .ini file as a command line argument. 029 //| If there is no such argument, it use the {{{dwarfs.ini.html}dwarfs.ini}} file. 030 //| 031 //</editor-fold> 032 //{ 033 import org.ini4j.IniPreferences; 034 035 import java.io.FileInputStream; 036 037 import java.util.prefs.*; 038 039 public class ListenerSample 040 { 041 public static final String FILENAME = "dwarfs.ini"; 042 043 public static void main(String[] args) throws Exception 044 { 045 String filename = (args.length > 0) ? args[0] : FILENAME; 046 Preferences prefs = new IniPreferences(new FileInputStream(filename)); 047 Listener listener = new Listener(); 048 049 prefs.addNodeChangeListener(listener); 050 Preferences jerry = prefs.node("jerry"); 051 052 jerry.addPreferenceChangeListener(listener); 053 jerry.put("color", "blue"); 054 jerry.put("color", "gray"); 055 jerry.putInt("age", 2); 056 } 057 058 static class Listener implements NodeChangeListener, PreferenceChangeListener 059 { 060 public void childAdded(NodeChangeEvent event) 061 { 062 System.out.println("node added: " + event.getChild().name()); 063 } 064 065 public void childRemoved(NodeChangeEvent event) 066 { 067 System.out.println("node removed: " + event.getChild().name()); 068 } 069 070 public void preferenceChange(PreferenceChangeEvent event) 071 { 072 System.out.println("preference changed: " + event.getKey() + " = " + event.getNewValue()); 073 } 074 } 075 } 076 //}