Java tutorial
package de.perdoctus.ebikeconnect.gui.cdi; /* * #%L * ebikeconnect-gui * %% * Copyright (C) 2016 Christoph Giesche * %% * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * #L% */ import org.apache.commons.configuration2.Configuration; import org.apache.commons.configuration2.PropertiesConfiguration; import org.apache.commons.configuration2.builder.FileBasedConfigurationBuilder; import org.apache.commons.configuration2.builder.fluent.Configurations; import org.slf4j.Logger; import javax.enterprise.inject.Produces; import javax.inject.Inject; import java.io.File; import java.io.IOException; public class ConfigurationProducer { final File settingsPath = new File(System.getProperty("user.home") + File.separatorChar + "ebikeconnect-gui"); @Inject private Logger logger; @Produces public Configuration createConfiguration() throws Exception { if (!settingsPath.exists() && !settingsPath.mkdirs()) { final IOException exception = new IOException( "Could not create settings file in " + settingsPath.getAbsolutePath()); logger.error(exception.getMessage(), exception); throw exception; } final File configFile = new File(settingsPath.getAbsolutePath() + File.separatorChar + "settings"); if (!configFile.exists() && !configFile.createNewFile()) { final IOException exception = new IOException( "Could not create settings file in " + configFile.getAbsolutePath()); logger.error(exception.getMessage(), exception); throw exception; } final Configurations configurations = new Configurations(); final FileBasedConfigurationBuilder<PropertiesConfiguration> builder = configurations .propertiesBuilder(configFile); builder.setAutoSave(true); return builder.getConfiguration(); } }