Here you can find the source of loadProperties(Properties properties, File propertyFile)
public static Properties loadProperties(Properties properties, File propertyFile)
//package com.java2s; /*/*w ww. ja v a2 s.c o m*/ * Copyright (c) 2016 VMware, Inc. All Rights Reserved. * * This product is licensed to you under the Apache License, Version 2.0 (the "License"). * You may not use this product except in compliance with the License. * * This product may include a number of subcomponents with separate copyright notices * and license terms. Your use of these subcomponents is subject to the terms and * conditions of the subcomponent's license, as noted in the LICENSE file. */ 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(Properties properties, File propertyFile) { try (FileInputStream inStream = new FileInputStream(propertyFile)) { properties.load(inStream); } catch (IOException e) { throw new IllegalArgumentException(String.format( "Error loading %s", propertyFile.getAbsolutePath()), e); } return properties; } public static Properties loadProperties(Properties properties, InputStream stream) { try { properties.load(stream); } catch (IOException e) { throw new IllegalArgumentException(String.format( "Error loading from stream", e)); } return properties; } }