Here you can find the source of loadProperties(String configurationFileProperty, String configurationFileDefault)
public static Properties loadProperties(String configurationFileProperty, String configurationFileDefault) throws IOException
//package com.java2s; /*//from w w w . j a va2 s. c o m * JBoss, Home of Professional Open Source. * Copyright (c) 2013, Red Hat, Inc., and individual contributors * as indicated by the @author tags. See the copyright.txt file in the * distribution for a full listing of individual contributors. * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ import java.io.File; import java.io.FileReader; import java.io.IOException; import java.util.Properties; public class Main { public static Properties loadProperties(String configurationFileProperty, String configurationFileDefault) throws IOException { String propsFileUserPath = System.getProperty(configurationFileProperty, configurationFileDefault); Properties props = new Properties(); props.load(new FileReader(new File(propsFileUserPath))); return props; } }