Java tutorial
/* * Copyright (C) 2010 Moduad Co., Ltd. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ package net.rinslet.util; import org.apache.commons.configuration.Configuration; import org.apache.commons.configuration.ConfigurationFactory; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; /** * This class is to manage the applicatin configruation. * * @author Sehwan Noh (devnoh@gmail.com) */ public class ConfigManager { private static final Log log = LogFactory.getLog(ConfigManager.class); private static Configuration config; private static ConfigManager instance; private ConfigManager() { loadConfig(); } /** * Returns the singleton instance of ConfigManger. * * @return the instance */ public static ConfigManager getInstance() { if (instance == null) { synchronized (ConfigManager.class) { instance = new ConfigManager(); } } return instance; } /** * Loads the default configuration file. */ public void loadConfig() { loadConfig("config.xml"); } /** * Loads the specific configuration file. * * @param configFileName the file name */ public void loadConfig(String configFileName) { try { ConfigurationFactory factory = new ConfigurationFactory(configFileName); config = factory.getConfiguration(); if (log.isDebugEnabled()) { log.debug("Configuration loaded: " + configFileName); } } catch (Exception ex) { log.error(ex.getMessage(), ex); throw new RuntimeException("Configuration loading error: " + configFileName, ex); } } /** * Returns the loaded configuration object. * * @return the configuration */ public Configuration getConfig() { return config; } }