Here you can find the source of loadProperties(String path, Properties defaults)
public static Properties loadProperties(String path, Properties defaults) throws IOException
//package com.java2s; /*/*from w w w. j a va2 s .co m*/ * FileUtils.java * * Copyright (C) 2002-2015 Takis Diakoumis * * 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 3 * of the License, or 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/>. * */ import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.util.Properties; public class Main { public static Properties loadProperties(String path, Properties defaults) throws IOException { return loadProperties(new File(path), defaults); } public static Properties loadProperties(File file, Properties defaults) throws IOException { InputStream input = null; try { Properties properties = null; if (defaults != null) { properties = new Properties(defaults); } else { properties = new Properties(); } input = new FileInputStream(file); properties.load(input); return properties; } finally { if (input != null) { input.close(); } } } public static Properties loadProperties(String path) throws IOException { return loadProperties(new File(path), null); } public static Properties loadProperties(File file) throws IOException { return loadProperties(file, null); } }