Java tutorial
/** * Marabou - Audio Tagger * * Copyright (C) 2012 - 2015 Jan-Hendrik Peters * * https://github.com/hennr/marabou * * Marabou 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 3 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, see * <http://www.gnu.org/licenses/gpl-3.0.html>. */ package com.github.marabou.properties; import com.github.marabou.helper.PathHelper; import org.apache.commons.io.FileUtils; import java.io.*; import java.util.Properties; import org.slf4j.Logger; import org.slf4j.LoggerFactory; public class PropertiesLoader { private final PathHelper pathHelper; private Logger log = LoggerFactory.getLogger(PropertiesLoader.class); public PropertiesLoader(PathHelper pathHelper) { this.pathHelper = pathHelper; } public Properties loadProperties(InputStream userPropertiesStream) { try { Properties properties = new Properties(); properties.load(userPropertiesStream); return properties; } catch (IOException e) { throw new RuntimeException("Couldn't load given input stream " + userPropertiesStream); } } void persistUserProperties(Properties userProperties) { try { createUserPropertiesDirectoryIfNonExistent(); writeUserProperties(userProperties); } catch (IOException e) { log.error("Couldn't save config file.", e); } } private void createUserPropertiesDirectoryIfNonExistent() throws IOException { File userPropertiesDirectory = pathHelper.getUserPropertiesDirectory(); if (!userPropertiesDirectory.exists()) { FileUtils.forceMkdir(userPropertiesDirectory); } } private void writeUserProperties(Properties userProperties) throws IOException { BufferedWriter userConf = createWriter(pathHelper.getUserPropertiesFilePath()); userProperties.store(userConf, null); userConf.flush(); userConf.close(); } private BufferedWriter createWriter(String filePath) throws IOException { return new BufferedWriter(new FileWriter(filePath)); } }